Productivity of U.S. Rangelands, Annual Data lbs/acre (Map Service)

Production data were generated using the Normalized Difference Vegetation Index (NDVI) from the Thematic Mapper Suite from 1984 to 2021 at 250 m resolution. The NDVI is converted to production estimates using two regression formulas depending on the level of the NDVI; there is one equation for lower values (and thus lower production values) and one for higher values.This raster dataset yields estimates of annual production of rangeland vegetation and should be useful for understanding trends and variability in forage resources.The Rangeland Productivity data can be downloaded here:https://data.fs.usda.gov/geodata/rastergateway/rangelands/index.phpThis record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.

本数据集采用1984年至2021年间，源自Thematic Mapper Suite的标准化植被指数（Normalized Difference Vegetation Index，简称NDVI）在250米分辨率下生成生产数据。根据NDVI的水平，NDVI被转换为生产估计值，采用两种回归公式：一种适用于较低值（以及因此较低的生产值），另一种适用于较高值。该栅格数据集提供了年度草原植被生产量的估计，对于理解放牧资源趋势与变异性具有实际应用价值。草原生产力数据可通过以下链接下载：https://data.fs.usda.gov/geodata/rastergateway/rangelands/index.php。本记录源自美国农业部企业数据目录，该目录数据输入至https://data.gov目录。本记录的数据资源包括以下内容：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS GeoService。欲获取详细信息，请访问https://data.gov。