Hello Dr. Carlson, How soon do you need that data? Do you need only recent information or temporal data? 2016 NLCD will be released in Dec 2018. Other than that newest data is 2011 NLCD. As far as I remembe, NLCD data is not very big that most of computers should handle it. Unless, it is very old. U.S. has 3007 counties. Check this link for US county shapefile https://www.census.gov/geo/maps-data/data/cbf/cbf_counties.html . All you need to do is use raster calculator tool and zonal statistics tool (or tools equivalent in qgis). QGIS is free software and it has loads of tool like ESRI ArcMAP has.
Cartographic Boundary Shapefiles - Counties - Geography ...<https://www.census.gov/geo/maps-data/data/cbf/cbf_counties.html> www.census.gov Our statistics highlight trends in household and family composition, describe characteristics of the residents of housing units, and show how they are related. If you have access to ArcMAP, I can help you. Or if I get time, I can generate it for you but I am busy at the moment. Check this link for NLCD data https://www.mrlc.gov/nlcd2011.php MRLC NLCD 2011<https://www.mrlc.gov/nlcd2011.php> www.mrlc.gov National Land Cover Database 2011 (NLCD 2011) National Land Cover Database 2011 (NLCD 2011) is the most recent national land cover product created by the Multi-Resolution Land Characteristics (MRLC) Consortium. I hope it helps. Regards... Oguz Sariyildiz Graduate Research Assistant Division of Environmental Studies College of Agriculture Food Science and Sustainable Systems Cooperative Building Kentucky State University 400 E. Main St. Frankfort, Ky 40601 ________________________________ From: Ecological Society of America: grants, jobs, news <ECOLOG-L@LISTSERV.UMD.EDU> on behalf of Bradley Carlson <carls...@wabash.edu> Sent: Tuesday, June 12, 2018 11:06:01 AM To: ECOLOG-L@LISTSERV.UMD.EDU Subject: [ECOLOG-L] County level land use/cover data Hello, I have an analysis to perform that would require data on land use or land cover from each US county, in some kind of spreadsheet format. I'm particularly wanting to know the proportion of land or total land area in each county that is either in agriculture or developed/urban/residential. Does anyone know if such a dataset exists? Alternatively, could anyone help me generate such a dataset? It appears to not be particularly complicated to derive from NLCD raster datasets a new layer with developed/agricultural vs. "natural" land and to calculate the proportion/mean of these on the basis of a county polygon layer. However, I have limited GIS skills, and I am only equipped with open source GIS and computers that seem unable to handle the memory demands of nationwide raster datasets. Thank you for any help you can offer! Brad -- Bradley E. Carlson Assistant Professor of Biology Wabash College Crawfordsville, IN 47933 Website: carlsonecolab.weebly.com<http://carlsonecolab.weebly.com>
