Changes
On March 10, 2025 at 8:03:25 PM UTC,
-
Updated description of resource Forest Type NFI 2023 in Forest Type NFI from
**Important note:** This dataset is NOT suitable for analysis at the individual tree crown level because probabilities at the pixel level (e.g., of the broadleaf class) are not allocated to individual trees. Analysis is recommended only for areas larger than 3x3 pixels, i.e. by calculating the mean values, except in rare cases of homogeneous forest stands (either broadleaf or coniferous class). This dataset uses a remote sensing-based approach for a countrywide mapping of the Dominant Leaf Type (DLT) in Switzerland, classifying areas as either broadleaf or coniferous. These datasets have a spatial resolution of 10 m and provide the probabilities (0-100%) of the class broadleaf at the pixel level (covering areas with vegetation height > 3m). The classification approach is based on a Random Forest (RF) classifier, that combines predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data with the SwissAlti3D terrain model. The models were calibrated using digitized training polygons and independently validated data from the National Forest Inventory (NFI). Whereas high model overall accuracies (0.97) and kappa (0.96) were achieved, the comparison of the forest type NFI map with independent NFI data revealed deviations in mixed stands. The dataset 'Forest Type NFI 2023' is freely available on request (lars.waser@wsl.ch).
to**Important note:** This dataset is NOT suitable for analysis at the individual tree crown level because probabilities at the pixel level (e.g., of the broadleaf class) are not allocated to individual trees. Analysis is recommended only for areas larger than 3x3 pixels, i.e. by calculating the mean values, except in rare cases of homogeneous forest stands (either broadleaf or coniferous class). This dataset uses a remote sensing-based approach for a countrywide mapping of the Dominant Leaf Type (DLT) in Switzerland, classifying areas as either broadleaf or coniferous. These datasets have a spatial resolution of 10 m and provide the probabilities (0-100%) of the class broadleaf at the pixel level (covering areas with vegetation height > 3m). The classification approach is based on a Random Forest (RF) classifier, that combines predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data with the SwissAlti3D terrain model. The models were calibrated using digitized training polygons and independently validated data from the National Forest Inventory (NFI). Whereas high model overall accuracies (0.97) and kappa (0.96) were achieved, the comparison of the Forest Type NFI 2023 map with independent NFI data revealed deviations in mixed stands. The dataset 'Forest Type NFI 2023' is freely available on request (lars.waser@wsl.ch).
f | 1 | { | f | 1 | { |
2 | "author": "[{\"affiliation\": \"Swiss Federal Institute for Forest, | 2 | "author": "[{\"affiliation\": \"Swiss Federal Institute for Forest, | ||
3 | Snow and Landscape Research WSL \", \"affiliation_02\": \"\", | 3 | Snow and Landscape Research WSL \", \"affiliation_02\": \"\", | ||
4 | \"affiliation_03\": \"\", \"email\": \"lars.waser@wsl.ch\", | 4 | \"affiliation_03\": \"\", \"email\": \"lars.waser@wsl.ch\", | ||
5 | \"given_name\": \"Lars\", \"identifier\": \"D-5937-2011\", \"name\": | 5 | \"given_name\": \"Lars\", \"identifier\": \"D-5937-2011\", \"name\": | ||
6 | \"Waser\"}, {\"affiliation\": \"Swiss Federal Institute for Forest, | 6 | \"Waser\"}, {\"affiliation\": \"Swiss Federal Institute for Forest, | ||
7 | Snow and Landscape Research WSL \", \"affiliation_02\": \"\", | 7 | Snow and Landscape Research WSL \", \"affiliation_02\": \"\", | ||
8 | \"affiliation_03\": \"\", \"email\": \"christian.ginzler@wsl.ch\", | 8 | \"affiliation_03\": \"\", \"email\": \"christian.ginzler@wsl.ch\", | ||
9 | \"given_name\": \"Christian\", \"identifier\": \"E-9544-2012\", | 9 | \"given_name\": \"Christian\", \"identifier\": \"E-9544-2012\", | ||
10 | \"name\": \"Ginzler\"}, {\"affiliation\": \"WSL\", \"affiliation_02\": | 10 | \"name\": \"Ginzler\"}, {\"affiliation\": \"WSL\", \"affiliation_02\": | ||
11 | \"\", \"affiliation_03\": \"\", \"email\": | 11 | \"\", \"affiliation_03\": \"\", \"email\": | ||
12 | \"achilleas.psomas@wsl.ch\", \"given_name\": \"Achilleas\", | 12 | \"achilleas.psomas@wsl.ch\", \"given_name\": \"Achilleas\", | ||
13 | \"identifier\": \"\", \"name\": \"Psomas\"}, {\"affiliation\": | 13 | \"identifier\": \"\", \"name\": \"Psomas\"}, {\"affiliation\": | ||
14 | \"WSL\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", | 14 | \"WSL\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", | ||
15 | \"email\": \"marius.rueetschi@wsl.ch\", \"given_name\": \"Marius\", | 15 | \"email\": \"marius.rueetschi@wsl.ch\", \"given_name\": \"Marius\", | ||
16 | \"identifier\": \"\", \"name\": \"R\\u00fcetschi\"}, {\"affiliation\": | 16 | \"identifier\": \"\", \"name\": \"R\\u00fcetschi\"}, {\"affiliation\": | ||
17 | \"WSL\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", | 17 | \"WSL\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", | ||
18 | \"email\": \"nataliia.rehush@wsl.ch\", \"given_name\": \"Nataliia\", | 18 | \"email\": \"nataliia.rehush@wsl.ch\", \"given_name\": \"Nataliia\", | ||
19 | \"identifier\": \"\", \"name\": \"Rehush\"}]", | 19 | \"identifier\": \"\", \"name\": \"Rehush\"}]", | ||
20 | "author_email": null, | 20 | "author_email": null, | ||
21 | "creator_user_id": "6d44d5cd-9ac6-4100-bc2c-c02034a41b48", | 21 | "creator_user_id": "6d44d5cd-9ac6-4100-bc2c-c02034a41b48", | ||
22 | "date": "[{\"date\": \"2025-01-05\", \"date_type\": \"created\", | 22 | "date": "[{\"date\": \"2025-01-05\", \"date_type\": \"created\", | ||
23 | \"end_date\": \"\"}]", | 23 | \"end_date\": \"\"}]", | ||
24 | "doi": "10.16904/1000001.7", | 24 | "doi": "10.16904/1000001.7", | ||
25 | "extras": [ | 25 | "extras": [ | ||
26 | { | 26 | { | ||
27 | "key": "deprecatedResources", | 27 | "key": "deprecatedResources", | ||
28 | "value": | 28 | "value": | ||
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30 | } | 30 | } | ||
31 | ], | 31 | ], | ||
32 | "funding": "[{\"grant_number\":\"\",\"institution\":\"Federal Office | 32 | "funding": "[{\"grant_number\":\"\",\"institution\":\"Federal Office | ||
33 | for the Environment (FOEN).\",\"institution_url\":\"\"}]", | 33 | for the Environment (FOEN).\",\"institution_url\":\"\"}]", | ||
34 | "groups": [], | 34 | "groups": [], | ||
35 | "id": "82d763fa-123a-4648-b827-0dec02a5efbc", | 35 | "id": "82d763fa-123a-4648-b827-0dec02a5efbc", | ||
36 | "isopen": false, | 36 | "isopen": false, | ||
37 | "language": "en", | 37 | "language": "en", | ||
38 | "license_id": "other-undefined", | 38 | "license_id": "other-undefined", | ||
39 | "license_title": "Other (Specified in the description)", | 39 | "license_title": "Other (Specified in the description)", | ||
40 | "maintainer": "{\"affiliation\": \"Swiss Federal Institute for | 40 | "maintainer": "{\"affiliation\": \"Swiss Federal Institute for | ||
41 | Forest, Snow and Landscape Research WSL \", \"email\": | 41 | Forest, Snow and Landscape Research WSL \", \"email\": | ||
42 | \"lars.waser@wsl.ch\", \"given_name\": \"Lars\", \"identifier\": | 42 | \"lars.waser@wsl.ch\", \"given_name\": \"Lars\", \"identifier\": | ||
43 | \"D-5937-2011\", \"name\": \"Waser\"}", | 43 | \"D-5937-2011\", \"name\": \"Waser\"}", | ||
44 | "maintainer_email": null, | 44 | "maintainer_email": null, | ||
45 | "metadata_created": "2018-04-03T10:38:30.545175", | 45 | "metadata_created": "2018-04-03T10:38:30.545175", | ||
n | 46 | "metadata_modified": "2025-03-10T20:02:50.245761", | n | 46 | "metadata_modified": "2025-03-10T20:03:25.705305", |
47 | "name": "forest-type-nfi", | 47 | "name": "forest-type-nfi", | ||
48 | "notes": "A series of Forest Type NFI datasets covering Switzerland | 48 | "notes": "A series of Forest Type NFI datasets covering Switzerland | ||
49 | have been produced, and currently available for the years 2023, 2018, | 49 | have been produced, and currently available for the years 2023, 2018, | ||
50 | and 2016. These datasets provide the probability (0-100%) of the class | 50 | and 2016. These datasets provide the probability (0-100%) of the class | ||
51 | broadleaf at the pixel level. While pixel values with low | 51 | broadleaf at the pixel level. While pixel values with low | ||
52 | probabilities correspond to the class coniferous, pixel values with | 52 | probabilities correspond to the class coniferous, pixel values with | ||
53 | high probabilities correspond to the class broadleaf. Pixels with | 53 | high probabilities correspond to the class broadleaf. Pixels with | ||
54 | values around 50% can't unambiguously be assigned to one of the two | 54 | values around 50% can't unambiguously be assigned to one of the two | ||
55 | classes and might belong to mixed stands. The three datasets are based | 55 | classes and might belong to mixed stands. The three datasets are based | ||
56 | on different remote sensing data from different time spans and with | 56 | on different remote sensing data from different time spans and with | ||
57 | different spatial resolutions:\n\n- **Forest Type NFI 2023: | 57 | different spatial resolutions:\n\n- **Forest Type NFI 2023: | ||
58 | Sentinel-1/-2, 2021-2023, 10m (new dataset!)** \n- Forest Type NFI | 58 | Sentinel-1/-2, 2021-2023, 10m (new dataset!)** \n- Forest Type NFI | ||
59 | 2018: Sentinel-1/-2, 2016-2018, 10m\n- Forest Type NFI 2016: Aerial | 59 | 2018: Sentinel-1/-2, 2016-2018, 10m\n- Forest Type NFI 2016: Aerial | ||
60 | orthoimages, 2010-2015, 3m\n.\n---------------------\n.\n **Important | 60 | orthoimages, 2010-2015, 3m\n.\n---------------------\n.\n **Important | ||
61 | note:** None of the datasets is suitable for analysis at the | 61 | note:** None of the datasets is suitable for analysis at the | ||
62 | individual tree crown level because pixel-level probabilities are not | 62 | individual tree crown level because pixel-level probabilities are not | ||
63 | allocated to individual trees. Analysis is recommended only for areas | 63 | allocated to individual trees. Analysis is recommended only for areas | ||
64 | larger than 3x3 pixels, i.e. by calculating the mean values, except in | 64 | larger than 3x3 pixels, i.e. by calculating the mean values, except in | ||
65 | rare cases of homogeneous forest stands (either broadleaf or | 65 | rare cases of homogeneous forest stands (either broadleaf or | ||
66 | coniferous).\n\n**User\u2019s feedback:** \nWe are very motivated to | 66 | coniferous).\n\n**User\u2019s feedback:** \nWe are very motivated to | ||
67 | improve the dataset further and welcome any feedback or suggestions | 67 | improve the dataset further and welcome any feedback or suggestions | ||
68 | for corrections. Feel free to directly contact | 68 | for corrections. Feel free to directly contact | ||
69 | **lars.waser@wsl.ch**\n_________________\n.\n*Detailed | 69 | **lars.waser@wsl.ch**\n_________________\n.\n*Detailed | ||
70 | description:*\n\n**Forest Type NFI datasets, versions 2023 and 2018:** | 70 | description:*\n\n**Forest Type NFI datasets, versions 2023 and 2018:** | ||
71 | Both datasets use a remote sensing-based approach for a countrywide | 71 | Both datasets use a remote sensing-based approach for a countrywide | ||
72 | mapping of the Dominant Leaf Type (DLT) in Switzerland, classifying | 72 | mapping of the Dominant Leaf Type (DLT) in Switzerland, classifying | ||
73 | areas as either broadleaf or coniferous. These datasets have a spatial | 73 | areas as either broadleaf or coniferous. These datasets have a spatial | ||
74 | resolution of 10 m and provide the probability (0-100%) of the class | 74 | resolution of 10 m and provide the probability (0-100%) of the class | ||
75 | broadleaf at the pixel level (covering all areas with vegetation | 75 | broadleaf at the pixel level (covering all areas with vegetation | ||
76 | height > 5m version 2018, and >3 m version 2023). The classification | 76 | height > 5m version 2018, and >3 m version 2023). The classification | ||
77 | approach is based on a Random Forest (RF) classifier, that combines | 77 | approach is based on a Random Forest (RF) classifier, that combines | ||
78 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | 78 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | ||
79 | with the SwissAlti3D terrain model. In addition to the original | 79 | with the SwissAlti3D terrain model. In addition to the original | ||
80 | Sentinel-2 spectral bands, vegetation indices such as GEMI, MSAVI2, | 80 | Sentinel-2 spectral bands, vegetation indices such as GEMI, MSAVI2, | ||
81 | NDVI, CLRE and CCCI were used in the final model.\nThe classification | 81 | NDVI, CLRE and CCCI were used in the final model.\nThe classification | ||
82 | models were tested, trained and validated using up to 400,000 labels | 82 | models were tested, trained and validated using up to 400,000 labels | ||
83 | representing the two classes broadleaf and coniferous, derived from | 83 | representing the two classes broadleaf and coniferous, derived from | ||
84 | aerial image delineations. For the 2023 data set, the previously used | 84 | aerial image delineations. For the 2023 data set, the previously used | ||
85 | labels were quality-checked for reliability and temporal consistency | 85 | labels were quality-checked for reliability and temporal consistency | ||
86 | with the image data. Additionally, more labels were collected in the | 86 | with the image data. Additionally, more labels were collected in the | ||
87 | regions where the previous version of the data set performed less | 87 | regions where the previous version of the data set performed less | ||
88 | accurately \u2013 as reported by the users.\nSimilar high model | 88 | accurately \u2013 as reported by the users.\nSimilar high model | ||
89 | performances were achieved for both data sets: overall accuracy = | 89 | performances were achieved for both data sets: overall accuracy = | ||
90 | 0.96, kappa = 0.94, F1-score =0.96, precision = 0.97, recall = 0.94 | 90 | 0.96, kappa = 0.94, F1-score =0.96, precision = 0.97, recall = 0.94 | ||
91 | (2023), 0.95 (2018). Independent validation and plausibility check | 91 | (2023), 0.95 (2018). Independent validation and plausibility check | ||
92 | included the comparison of the predicted results with aerial image | 92 | included the comparison of the predicted results with aerial image | ||
93 | interpretations of the National Forest Inventory (NFI). For both data | 93 | interpretations of the National Forest Inventory (NFI). For both data | ||
94 | sets, deviations particularly occurred in mixed forest stands: over | 94 | sets, deviations particularly occurred in mixed forest stands: over | ||
95 | all accuracy = 0.81 (2018, 2023), kappa = 0.62 (2018), 0.59 (2023). | 95 | all accuracy = 0.81 (2018, 2023), kappa = 0.62 (2018), 0.59 (2023). | ||
96 | For more details, see Waser et al. (2021).\n\n**The Forest Type NFI | 96 | For more details, see Waser et al. (2021).\n\n**The Forest Type NFI | ||
97 | dataset, version 2016:** This dataset presents a countrywide map with | 97 | dataset, version 2016:** This dataset presents a countrywide map with | ||
98 | the two classes broadleaf and coniferous in Switzerland based on | 98 | the two classes broadleaf and coniferous in Switzerland based on | ||
99 | digital aerial imagery. The spatial resolution of the data set is 3 m. | 99 | digital aerial imagery. The spatial resolution of the data set is 3 m. | ||
100 | The pixel values correspond to the probabilities (0-100 %) of the | 100 | The pixel values correspond to the probabilities (0-100 %) of the | ||
101 | class broadleaf.\nThe classification approach incorporates a RF | 101 | class broadleaf.\nThe classification approach incorporates a RF | ||
102 | classifier, predictors from multispectral aerial imagery (ADS80) and | 102 | classifier, predictors from multispectral aerial imagery (ADS80) and | ||
103 | the SwissAlti3D terrain model. The model was tested, trained and | 103 | the SwissAlti3D terrain model. The model was tested, trained and | ||
104 | validated using 90,000 digitized polygons and achieved an overall | 104 | validated using 90,000 digitized polygons and achieved an overall | ||
105 | accuracy of 0.99 and a kappa of 0.98. Independent validation and | 105 | accuracy of 0.99 and a kappa of 0.98. Independent validation and | ||
106 | plausibility check included the comparison of the predicted results | 106 | plausibility check included the comparison of the predicted results | ||
107 | with aerial image interpretations of the NFI. Significant deviations | 107 | with aerial image interpretations of the NFI. Significant deviations | ||
108 | were observed, primarily due to an underestimation of broadleaved | 108 | were observed, primarily due to an underestimation of broadleaved | ||
109 | trees (median underestimation of 3.17%), especially in mixed forest | 109 | trees (median underestimation of 3.17%), especially in mixed forest | ||
110 | stands. For more details, see Waser et al. (2017; | 110 | stands. For more details, see Waser et al. (2017; | ||
111 | https://doi.org/10.3390/rs9080766).\n\n", | 111 | https://doi.org/10.3390/rs9080766).\n\n", | ||
112 | "num_resources": 7, | 112 | "num_resources": 7, | ||
113 | "num_tags": 7, | 113 | "num_tags": 7, | ||
114 | "organization": { | 114 | "organization": { | ||
115 | "approval_status": "approved", | 115 | "approval_status": "approved", | ||
116 | "created": "2017-04-20T16:51:21.920128", | 116 | "created": "2017-04-20T16:51:21.920128", | ||
117 | "description": "We develop and apply comprehensive and robust | 117 | "description": "We develop and apply comprehensive and robust | ||
118 | methods to extract and classify natural objects from continuous and | 118 | methods to extract and classify natural objects from continuous and | ||
119 | discrete raster datasets. Relevant features are acquired to describe | 119 | discrete raster datasets. Relevant features are acquired to describe | ||
120 | changes in landscape and land resources at different levels using | 120 | changes in landscape and land resources at different levels using | ||
121 | image data. Mathematical-statistical methods are adopted for automatic | 121 | image data. Mathematical-statistical methods are adopted for automatic | ||
122 | detection and description of image objects. Thus we contribute | 122 | detection and description of image objects. Thus we contribute | ||
123 | concepts, methods and data to describe/detect area wide changes and | 123 | concepts, methods and data to describe/detect area wide changes and | ||
124 | processes in the resources of landscape.\r\n\r\n### Tasks and main | 124 | processes in the resources of landscape.\r\n\r\n### Tasks and main | ||
125 | research\r\n\r\n* Development and application of methods to extract | 125 | research\r\n\r\n* Development and application of methods to extract | ||
126 | natural objects from continuous data.\r\n* Development of methods for | 126 | natural objects from continuous data.\r\n* Development of methods for | ||
127 | a comprehensive description of natural and anthropogenetic boundaries | 127 | a comprehensive description of natural and anthropogenetic boundaries | ||
128 | in continuous pattern (e.g. map signatures, vegetation transition, | 128 | in continuous pattern (e.g. map signatures, vegetation transition, | ||
129 | forest borders).\r\n* Development and application of methods to | 129 | forest borders).\r\n* Development and application of methods to | ||
130 | extract 3D-information from remotely sensed data for description of | 130 | extract 3D-information from remotely sensed data for description of | ||
131 | natural structures and changes. The main focus lies on wood and its | 131 | natural structures and changes. The main focus lies on wood and its | ||
132 | embedding/interaction within/with the landscape.\r\n* Conception and | 132 | embedding/interaction within/with the landscape.\r\n* Conception and | ||
133 | development of data acquisition based on high resolution remote | 133 | development of data acquisition based on high resolution remote | ||
134 | sensing data.\r\n* Conception, development and maintenance of the | 134 | sensing data.\r\n* Conception, development and maintenance of the | ||
135 | software interface in area wide data acquisition using airborne remote | 135 | software interface in area wide data acquisition using airborne remote | ||
136 | sensing data.\r\n* Scientific expert advice and support in the fields | 136 | sensing data.\r\n* Scientific expert advice and support in the fields | ||
137 | of photogrammetry and survey at WSL. Maintenance, enhancements and | 137 | of photogrammetry and survey at WSL. Maintenance, enhancements and | ||
138 | future development in these specific fields.\r\n* Adequate | 138 | future development in these specific fields.\r\n* Adequate | ||
139 | presentation of scientific results on national level and in noted | 139 | presentation of scientific results on national level and in noted | ||
140 | international journals and at international | 140 | international journals and at international | ||
141 | congresses/workshops/symposia.\r\n\r\n__Further information__: | 141 | congresses/workshops/symposia.\r\n\r\n__Further information__: | ||
142 | l/organization/research-units/landscape-dynamics/remote-sensing.html", | 142 | l/organization/research-units/landscape-dynamics/remote-sensing.html", | ||
143 | "id": "5243fbb4-e4e6-4779-9672-32a7ef33d5f9", | 143 | "id": "5243fbb4-e4e6-4779-9672-32a7ef33d5f9", | ||
144 | "image_url": "", | 144 | "image_url": "", | ||
145 | "is_organization": true, | 145 | "is_organization": true, | ||
146 | "name": "remote-sensing", | 146 | "name": "remote-sensing", | ||
147 | "state": "active", | 147 | "state": "active", | ||
148 | "title": "Remote Sensing", | 148 | "title": "Remote Sensing", | ||
149 | "type": "organization" | 149 | "type": "organization" | ||
150 | }, | 150 | }, | ||
151 | "owner_org": "5243fbb4-e4e6-4779-9672-32a7ef33d5f9", | 151 | "owner_org": "5243fbb4-e4e6-4779-9672-32a7ef33d5f9", | ||
152 | "private": false, | 152 | "private": false, | ||
153 | "publication": "{\"publication_year\": \"2025\", \"publisher\": | 153 | "publication": "{\"publication_year\": \"2025\", \"publisher\": | ||
154 | \"National Forest Inventory (NFI)\"}", | 154 | \"National Forest Inventory (NFI)\"}", | ||
155 | "publication_state": "published", | 155 | "publication_state": "published", | ||
156 | "related_datasets": "", | 156 | "related_datasets": "", | ||
157 | "related_publications": "wsl:28243\nWaser, L. T., Ginzler, C., & | 157 | "related_publications": "wsl:28243\nWaser, L. T., Ginzler, C., & | ||
158 | Rehush, N. (2017). Wall-to-wall tree type mapping from countrywide | 158 | Rehush, N. (2017). Wall-to-wall tree type mapping from countrywide | ||
159 | airborne remote sensing surveys. Remote Sensing, 9(8), 766 (24 pp.). | 159 | airborne remote sensing surveys. Remote Sensing, 9(8), 766 (24 pp.). | ||
160 | https://doi.org/10.3390/rs9080766", | 160 | https://doi.org/10.3390/rs9080766", | ||
161 | "relationships_as_object": [], | 161 | "relationships_as_object": [], | ||
162 | "relationships_as_subject": [], | 162 | "relationships_as_subject": [], | ||
163 | "resource_type": "dataset", | 163 | "resource_type": "dataset", | ||
164 | "resource_type_general": "dataset", | 164 | "resource_type_general": "dataset", | ||
165 | "resources": [ | 165 | "resources": [ | ||
166 | { | 166 | { | ||
167 | "cache_last_updated": null, | 167 | "cache_last_updated": null, | ||
168 | "cache_url": null, | 168 | "cache_url": null, | ||
169 | "created": "2021-04-23T08:02:00.149511", | 169 | "created": "2021-04-23T08:02:00.149511", | ||
170 | "description": "\n **Important note:** This dataset is NOT | 170 | "description": "\n **Important note:** This dataset is NOT | ||
171 | suitable for analysis at the individual tree crown level because | 171 | suitable for analysis at the individual tree crown level because | ||
172 | probabilities at pixel-level (e.g., of the broadleaf class) are not | 172 | probabilities at pixel-level (e.g., of the broadleaf class) are not | ||
173 | allocated to individual trees. Analysis is recommended only for areas | 173 | allocated to individual trees. Analysis is recommended only for areas | ||
174 | larger than 3x3 pixels, i.e. by calculating the mean values, except in | 174 | larger than 3x3 pixels, i.e. by calculating the mean values, except in | ||
175 | rare cases of homogeneous forest stands (either broadleaf or | 175 | rare cases of homogeneous forest stands (either broadleaf or | ||
176 | coniferous class). \n\nThis dataset uses a remote sensing-based | 176 | coniferous class). \n\nThis dataset uses a remote sensing-based | ||
177 | approach for a countrywide mapping of the Dominant Leaf Type (DLT) in | 177 | approach for a countrywide mapping of the Dominant Leaf Type (DLT) in | ||
178 | Switzerland, classifying areas as either broadleaf or coniferous. | 178 | Switzerland, classifying areas as either broadleaf or coniferous. | ||
179 | These datasets have a spatial resolution of 10 m and provide the | 179 | These datasets have a spatial resolution of 10 m and provide the | ||
180 | probabilities (0-100%) of the class broadleaf at the pixel level | 180 | probabilities (0-100%) of the class broadleaf at the pixel level | ||
181 | (covering areas with vegetation height > 5m).\nThe classification | 181 | (covering areas with vegetation height > 5m).\nThe classification | ||
182 | approach is based on a Random Forest (RF) classifier, that combines | 182 | approach is based on a Random Forest (RF) classifier, that combines | ||
183 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | 183 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | ||
184 | with the SwissAlti3D terrain model. The models were calibrated using | 184 | with the SwissAlti3D terrain model. The models were calibrated using | ||
185 | digitized training polygons and independently validated data from the | 185 | digitized training polygons and independently validated data from the | ||
186 | National Forest Inventory (NFI). Whereas high model overall accuracies | 186 | National Forest Inventory (NFI). Whereas high model overall accuracies | ||
187 | (0.97) and kappa (0.96) were achieved, the comparison of the Forest | 187 | (0.97) and kappa (0.96) were achieved, the comparison of the Forest | ||
188 | Type NFI 2018 map with independent NFI data revealed deviations in | 188 | Type NFI 2018 map with independent NFI data revealed deviations in | ||
189 | mixed stands.\n\nThe dataset 'Forest Type NFI 2018' is freely | 189 | mixed stands.\n\nThe dataset 'Forest Type NFI 2018' is freely | ||
190 | available on request (lars.waser@wsl.ch).\n\n", | 190 | available on request (lars.waser@wsl.ch).\n\n", | ||
191 | "doi": "10.16904/1000001.6", | 191 | "doi": "10.16904/1000001.6", | ||
192 | "format": "geotiff", | 192 | "format": "geotiff", | ||
193 | "hash": "", | 193 | "hash": "", | ||
194 | "id": "5a18924a-ef5a-4af2-a391-b0056a0874bb", | 194 | "id": "5a18924a-ef5a-4af2-a391-b0056a0874bb", | ||
195 | "last_modified": "2025-03-10T21:02:49.852000", | 195 | "last_modified": "2025-03-10T21:02:49.852000", | ||
196 | "metadata_modified": "2025-03-10T20:02:50.251236", | 196 | "metadata_modified": "2025-03-10T20:02:50.251236", | ||
197 | "mimetype": null, | 197 | "mimetype": null, | ||
198 | "mimetype_inner": null, | 198 | "mimetype_inner": null, | ||
199 | "name": "Forest Type NFI 2018", | 199 | "name": "Forest Type NFI 2018", | ||
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215 | "created": "2021-03-27T04:57:32.557727", | 215 | "created": "2021-03-27T04:57:32.557727", | ||
216 | "description": "This dataset presents a countrywide map with the | 216 | "description": "This dataset presents a countrywide map with the | ||
217 | two classes broadleaf and coniferous in Switzerland based on digital | 217 | two classes broadleaf and coniferous in Switzerland based on digital | ||
218 | aerial imagery. The spatial resolution of the data set is 3 m. The | 218 | aerial imagery. The spatial resolution of the data set is 3 m. The | ||
219 | pixel values correspond to the fraction (0-100 %) of the class | 219 | pixel values correspond to the fraction (0-100 %) of the class | ||
220 | broadleaf.\nThe classification approach incorporates a RF classifier, | 220 | broadleaf.\nThe classification approach incorporates a RF classifier, | ||
221 | predictors from multispectral aerial imagery (ADS80) and the | 221 | predictors from multispectral aerial imagery (ADS80) and the | ||
222 | SwissAlti3D terrain model. The model was tested, trained and validated | 222 | SwissAlti3D terrain model. The model was tested, trained and validated | ||
223 | using 90,000 digitized polygons and achieved an overall accuracy of | 223 | using 90,000 digitized polygons and achieved an overall accuracy of | ||
224 | 0.99 and a kappa of 0.98. Independent validation and plausibility | 224 | 0.99 and a kappa of 0.98. Independent validation and plausibility | ||
225 | check included the comparison of the predicted results with aerial | 225 | check included the comparison of the predicted results with aerial | ||
226 | image interpretations of the NFI. Significant deviations were | 226 | image interpretations of the NFI. Significant deviations were | ||
227 | observed, primarily due to an underestimation of broadleaved trees | 227 | observed, primarily due to an underestimation of broadleaved trees | ||
228 | (median underestimation of 3.17%), especially in mixed forest stands. | 228 | (median underestimation of 3.17%), especially in mixed forest stands. | ||
229 | For more details, see Waser et al. (2017).\n\nData 'Forest Type NFI | 229 | For more details, see Waser et al. (2017).\n\nData 'Forest Type NFI | ||
230 | 2016' available on request (lars.waser@wsl.ch).", | 230 | 2016' available on request (lars.waser@wsl.ch).", | ||
231 | "doi": "10.16904/1000001.3", | 231 | "doi": "10.16904/1000001.3", | ||
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254 | "created": "2018-04-03T10:42:10.760550", | 254 | "created": "2018-04-03T10:42:10.760550", | ||
255 | "description": "Waser, L. T., Ginzler, C., & Rehush, N. (2017). | 255 | "description": "Waser, L. T., Ginzler, C., & Rehush, N. (2017). | ||
256 | Wall-to-Wall Tree Type Mapping from Countrywide Airborne Remote | 256 | Wall-to-Wall Tree Type Mapping from Countrywide Airborne Remote | ||
257 | Sensing Surveys. Remote Sensing, 9(8), 766. | 257 | Sensing Surveys. Remote Sensing, 9(8), 766. | ||
258 | https://doi.org/10.3390/rs9080766", | 258 | https://doi.org/10.3390/rs9080766", | ||
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277 | "url": | 277 | "url": | ||
278 | "https://www.dora.lib4ri.ch/wsl/islandora/object/wsl:14162", | 278 | "https://www.dora.lib4ri.ch/wsl/islandora/object/wsl:14162", | ||
279 | "url_type": null | 279 | "url_type": null | ||
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284 | "created": "2018-04-03T13:06:34.033220", | 284 | "created": "2018-04-03T13:06:34.033220", | ||
285 | "description": "Sample illustration of the Forest Type NFI | 285 | "description": "Sample illustration of the Forest Type NFI | ||
286 | dataset.", | 286 | dataset.", | ||
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311 | "created": "2025-03-04T22:11:00.261394", | 311 | "created": "2025-03-04T22:11:00.261394", | ||
312 | "description": "Waser, L. T., R\u00fcetschi, M., Psomas, A., | 312 | "description": "Waser, L. T., R\u00fcetschi, M., Psomas, A., | ||
313 | Small, D., & Rehush, N. (2021). Mapping dominant leaf type based on | 313 | Small, D., & Rehush, N. (2021). Mapping dominant leaf type based on | ||
314 | combined Sentinel-1/-2 data \u2013 Challenges for mountainous | 314 | combined Sentinel-1/-2 data \u2013 Challenges for mountainous | ||
315 | countries. ISPRS Journal of Photogrammetry and Remote Sensing, 180, | 315 | countries. ISPRS Journal of Photogrammetry and Remote Sensing, 180, | ||
316 | 209-226. https://doi.org/10.1016/j.isprsjprs.2021.08.017", | 316 | 209-226. https://doi.org/10.1016/j.isprsjprs.2021.08.017", | ||
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334 | "state": "active", | 334 | "state": "active", | ||
335 | "url": | 335 | "url": | ||
336 | "https://www.dora.lib4ri.ch/wsl/islandora/object/wsl:28243", | 336 | "https://www.dora.lib4ri.ch/wsl/islandora/object/wsl:28243", | ||
337 | "url_type": null | 337 | "url_type": null | ||
338 | }, | 338 | }, | ||
339 | { | 339 | { | ||
340 | "cache_last_updated": null, | 340 | "cache_last_updated": null, | ||
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342 | "created": "2025-03-06T13:23:45.237260", | 342 | "created": "2025-03-06T13:23:45.237260", | ||
343 | "description": "\n**Important note:** This dataset is NOT | 343 | "description": "\n**Important note:** This dataset is NOT | ||
344 | suitable for analysis at the individual tree crown level because | 344 | suitable for analysis at the individual tree crown level because | ||
n | 345 | probabilities at the pixel level (e.g., of the broadleaf class) are | n | 345 | probabilities at the pixel level (e.g., of the broadleaf class) are |
346 | not allocated to individual trees. Analysis is recommended only for | 346 | not allocated to individual trees. Analysis is recommended only for | ||
347 | areas larger than 3x3 pixels, i.e. by calculating the mean values, | 347 | areas larger than 3x3 pixels, i.e. by calculating the mean values, | ||
348 | except in rare cases of homogeneous forest stands (either broadleaf or | 348 | except in rare cases of homogeneous forest stands (either broadleaf or | ||
349 | coniferous class).\n\nThis dataset uses a remote sensing-based | 349 | coniferous class).\n\nThis dataset uses a remote sensing-based | ||
350 | approach for a countrywide mapping of the Dominant Leaf Type (DLT) in | 350 | approach for a countrywide mapping of the Dominant Leaf Type (DLT) in | ||
351 | Switzerland, classifying areas as either broadleaf or coniferous. | 351 | Switzerland, classifying areas as either broadleaf or coniferous. | ||
352 | These datasets have a spatial resolution of 10 m and provide the | 352 | These datasets have a spatial resolution of 10 m and provide the | ||
353 | probabilities (0-100%) of the class broadleaf at the pixel level | 353 | probabilities (0-100%) of the class broadleaf at the pixel level | ||
354 | (covering areas with vegetation height > 3m).\nThe classification | 354 | (covering areas with vegetation height > 3m).\nThe classification | ||
355 | approach is based on a Random Forest (RF) classifier, that combines | 355 | approach is based on a Random Forest (RF) classifier, that combines | ||
356 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | 356 | predictors derived from multi-temporal Sentinel-1 and Sentinel-2 data | ||
357 | with the SwissAlti3D terrain model. The models were calibrated using | 357 | with the SwissAlti3D terrain model. The models were calibrated using | ||
358 | digitized training polygons and independently validated data from the | 358 | digitized training polygons and independently validated data from the | ||
359 | National Forest Inventory (NFI). Whereas high model overall accuracies | 359 | National Forest Inventory (NFI). Whereas high model overall accuracies | ||
n | 360 | (0.97) and kappa (0.96) were achieved, the comparison of the forest | n | 360 | (0.97) and kappa (0.96) were achieved, the comparison of the Forest |
361 | type NFI map with independent NFI data revealed deviations in mixed | 361 | Type NFI 2023 map with independent NFI data revealed deviations in | ||
362 | stands.\n\nThe dataset 'Forest Type NFI 2023' is freely available on | 362 | mixed stands.\n\nThe dataset 'Forest Type NFI 2023' is freely | ||
363 | request (lars.waser@wsl.ch).", | 363 | available on request (lars.waser@wsl.ch).", | ||
364 | "doi": "", | 364 | "doi": "", | ||
365 | "format": "geotif", | 365 | "format": "geotif", | ||
366 | "hash": "", | 366 | "hash": "", | ||
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388 | "created": "2025-03-09T21:36:32.049910", | 388 | "created": "2025-03-09T21:36:32.049910", | ||
389 | "description": "Preview of the dataset Forest Type NFI 2023.", | 389 | "description": "Preview of the dataset Forest Type NFI 2023.", | ||
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409 | "url_type": "upload" | 409 | "url_type": "upload" | ||
410 | } | 410 | } | ||
411 | ], | 411 | ], | ||
412 | "spatial": | 412 | "spatial": | ||
413 | inates\":[[[-175,-85],[-175,85],[175,85],[175,-85],[-175,-85]]]}]}]}", | 413 | inates\":[[[-175,-85],[-175,85],[175,85],[175,-85],[-175,-85]]]}]}]}", | ||
414 | "spatial_info": "Switzerland", | 414 | "spatial_info": "Switzerland", | ||
415 | "state": "active", | 415 | "state": "active", | ||
416 | "subtitle": "", | 416 | "subtitle": "", | ||
417 | "tags": [ | 417 | "tags": [ | ||
418 | { | 418 | { | ||
419 | "display_name": "BROADLEAF PROBABILITY", | 419 | "display_name": "BROADLEAF PROBABILITY", | ||
420 | "id": "b2c1c2b5-27cf-4439-870b-bf797970a6a6", | 420 | "id": "b2c1c2b5-27cf-4439-870b-bf797970a6a6", | ||
421 | "name": "BROADLEAF PROBABILITY", | 421 | "name": "BROADLEAF PROBABILITY", | ||
422 | "state": "active", | 422 | "state": "active", | ||
423 | "vocabulary_id": null | 423 | "vocabulary_id": null | ||
424 | }, | 424 | }, | ||
425 | { | 425 | { | ||
426 | "display_name": "DOMINANT LEAFTYPE", | 426 | "display_name": "DOMINANT LEAFTYPE", | ||
427 | "id": "1b334234-4bd0-44d4-bb78-039fe70bab90", | 427 | "id": "1b334234-4bd0-44d4-bb78-039fe70bab90", | ||
428 | "name": "DOMINANT LEAFTYPE", | 428 | "name": "DOMINANT LEAFTYPE", | ||
429 | "state": "active", | 429 | "state": "active", | ||
430 | "vocabulary_id": null | 430 | "vocabulary_id": null | ||
431 | }, | 431 | }, | ||
432 | { | 432 | { | ||
433 | "display_name": "FOREST", | 433 | "display_name": "FOREST", | ||
434 | "id": "90cd0d8f-8df0-4b78-ac11-6e38c2a22106", | 434 | "id": "90cd0d8f-8df0-4b78-ac11-6e38c2a22106", | ||
435 | "name": "FOREST", | 435 | "name": "FOREST", | ||
436 | "state": "active", | 436 | "state": "active", | ||
437 | "vocabulary_id": null | 437 | "vocabulary_id": null | ||
438 | }, | 438 | }, | ||
439 | { | 439 | { | ||
440 | "display_name": "FOREST INVENTORY", | 440 | "display_name": "FOREST INVENTORY", | ||
441 | "id": "d1b2883f-be82-426b-8a5e-fd6d36bc2855", | 441 | "id": "d1b2883f-be82-426b-8a5e-fd6d36bc2855", | ||
442 | "name": "FOREST INVENTORY", | 442 | "name": "FOREST INVENTORY", | ||
443 | "state": "active", | 443 | "state": "active", | ||
444 | "vocabulary_id": null | 444 | "vocabulary_id": null | ||
445 | }, | 445 | }, | ||
446 | { | 446 | { | ||
447 | "display_name": "FOREST TYPE", | 447 | "display_name": "FOREST TYPE", | ||
448 | "id": "52ad8bb3-8ec8-4e9d-8798-858d7662c3e4", | 448 | "id": "52ad8bb3-8ec8-4e9d-8798-858d7662c3e4", | ||
449 | "name": "FOREST TYPE", | 449 | "name": "FOREST TYPE", | ||
450 | "state": "active", | 450 | "state": "active", | ||
451 | "vocabulary_id": null | 451 | "vocabulary_id": null | ||
452 | }, | 452 | }, | ||
453 | { | 453 | { | ||
454 | "display_name": "NFI", | 454 | "display_name": "NFI", | ||
455 | "id": "0a74eb64-cf7b-42df-b2d4-1a5ad8171458", | 455 | "id": "0a74eb64-cf7b-42df-b2d4-1a5ad8171458", | ||
456 | "name": "NFI", | 456 | "name": "NFI", | ||
457 | "state": "active", | 457 | "state": "active", | ||
458 | "vocabulary_id": null | 458 | "vocabulary_id": null | ||
459 | }, | 459 | }, | ||
460 | { | 460 | { | ||
461 | "display_name": "REMOTE SENSING", | 461 | "display_name": "REMOTE SENSING", | ||
462 | "id": "1bc9d51e-2500-44a7-857b-13710a59e4be", | 462 | "id": "1bc9d51e-2500-44a7-857b-13710a59e4be", | ||
463 | "name": "REMOTE SENSING", | 463 | "name": "REMOTE SENSING", | ||
464 | "state": "active", | 464 | "state": "active", | ||
465 | "vocabulary_id": null | 465 | "vocabulary_id": null | ||
466 | } | 466 | } | ||
467 | ], | 467 | ], | ||
468 | "title": "Forest Type NFI", | 468 | "title": "Forest Type NFI", | ||
469 | "type": "dataset", | 469 | "type": "dataset", | ||
470 | "url": null, | 470 | "url": null, | ||
471 | "version": "2023" | 471 | "version": "2023" | ||
472 | } | 472 | } |