EnviroAtlas - Synthetic N fertilizer application to agricultural lands by 12-digit HUC in the Conterminous United States, 2006

Description

This EnviroAtlas dataset contains data on the mean synthetic nitrogen (N) fertilizer application to cultivated crop and hay/pasture lands per 12-digit Hydrologic Unit (HUC) in 2006. Synthetic N fertilizer inputs in 2006 were estimated using county-level estimates of farm N fertilizer inputs. We acquired county-level data describing total farm-level inputs (kg N/yr) of synthetic N fertilizer to individual counties in 2006 from the United States Geological Survey (USGS) (http://pubs.usgs.gov/sir/2012/5207/). These data were converted to per area rates (kg N/ha/yr) of synthetic N fertilizer application by dividing the total N input by the land area (ha) of combined cultivated crop and hay/pasture lands within a county as determined from county-level (http://cta.ornl.gov/transnet/Boundaries.html) summarization of the 2006 National Land Cover Database (NLCD; http://www.mrlc.gov/nlcd06_data.php). We distributed county-specific, annual per area N inputs rates (kg N/ha/yr) to cultivated crop and hay/pasture lands (30 x 30 m pixels) within the corresponding county using the raster calculator tool in ArcMap 10.0 (ESRI, Inc., Redlands, CA). Fertilizer data described here represent an average input to a typical agricultural land type within a county, i.e., they are not specific to individual crop types. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).

Resources

Name Format Description Link
0 The URL providing direct access to the downloadable dataset. https://edg.epa.gov/data/PUBLIC/ORD/ENVIROATLAS/National
23 The endpoint of a web service to access the dataset (REST endpoint, WMS GetCapabilities URL, or a SOAP WSDL endpoint). https://enviroatlas.epa.gov/arcgis/rest/services/National/National2016_master/MapServer
0 Alternative landing page used to redirect user to a contextual, Agency-hosted "homepage" for the Dataset or API https://www.epa.gov/enviroatlas
0 URL for accessing related documents such as data dictionary, technical information about a dataset, developer documentation, etc. https://www.epa.gov/enviroatlas/enviroatlas-data

Tags

  • environment
  • indiana
  • montana
  • utah
  • delaware
  • missouri
  • colorado
  • idaho
  • agriculture
  • wyoming
  • kentucky
  • new hampshire
  • tennessee
  • virginia
  • united states
  • north carolina
  • mississippi
  • north dakota
  • south carolina
  • michigan
  • vermont
  • kansas
  • enviroatlas
  • maine
  • new york
  • ecosystem
  • new mexico
  • arkansas
  • texas
  • new jersey
  • pennsylvania
  • connecticut
  • maryland
  • california
  • arizona
  • washington
  • ecosystem services
  • florida
  • washington dc
  • environmental atlas
  • wisconsin
  • iowa
  • louisiana
  • west virginia
  • rhode island
  • alabama
  • ohio
  • oklahoma
  • land
  • georgia
  • minnesota
  • illinois
  • oregon
  • nevada
  • massachusetts
  • nebraska
  • south dakota
  • 12-digit hucs

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