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Historical woodland density of the conterminous United States, 1873 is a digital representation of William H. Brewer's 1873 "Map showing five degrees of density. The distribution of woodland within the territory of the United States." |
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Historical woodland density of the conterminous United States, 1873 is a digital representation of William H. Brewer's 1873 "Map showing five degrees of density. The distribution of woodland within the territory of the United States." |
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If you use these data in a publication, presentation, or other product please use the citation below to credit the authors for their contribution to your work. (Please see metadata document's section on use constraints for more details on any additional considerations.) Liknes, Greg C.; Nelson, Mark D.; Kaisershot, Daniel J. 2013. Historical woodland density of the conterminous United States, 1873. Newtown Square, PA: USDA Forest Service, Northern Research Station. http://dx.doi.org/10.2737/RDS-2013-0006 |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset includes polygons with a minimum of 40 acres of woodlands per square mile as depicted in William H. Brewer’s 1873 map of woodland density and covers the conterminous United States. Each polygon has been labeled with the density category (1-5) depicted on the original map. This dataset was created by georeferencing a scanned version of the source map and by heads-up digitizing each woodland density polygon.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Appropriate use includes coarse-scale assessment of forestry trends or historical forest conditions. Disclaimer Regarding the Use of USDA Forest Service Data: The USDA Forest Service manages resource information and derived data as a service to Forest Service users of digital geographic data. The Forest Service is in no way condoning or endorsing the application of these data for any given purpose. It is the sole responsibility of the user to determine whether or not the data are suitable for the intended purpose. It is also the obligation of the user to apply those data in an appropriate and conscientious manner. The Forest Service provides no warranty, nor accepts any liability occurring from any incorrect, incomplete, or misleading data, or from any incorrect, incomplete, or misleading use of these data. Much of the Forest Service data are compiled, processed, and maintained with ArcGIS software developed by the Environmental Systems Research Institute (ESRI). Much of the information presented uses conventions and terms popularized by ArcGIS and its user community. The mention of commercial firms or products is for clarity and identification of procedures and methods only, and no endorsements are implied by the Forest Service. These data were collected by USDA Forest Service researchers and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the citation below when citing the data product: Liknes, Greg C.; Nelson, Mark D.; Kaisershot, Daniel J. 2013. Historical woodland density of the conterminous United States, 1873. Newtown Square, PA. U.S. Department of Agriculture, Forest Service, Northern Research Station. http://dx.doi.org/10.2737/RDS-2013-0006</SPAN></P></DIV></DIV></DIV> |
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S_USA.Historical_Woodland_Density_1873 |
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["Geography","William Brewer","conterminous United States","historical map","CONUS","imageryBaseMapsEarthCover","woodland density","Inventory","Monitoring & Analysis","Ecology","Ecosystems & Environment","Resource inventory","environment"] |
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en-US |
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150000000 |
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