Comparison of Land Use Area Estimates from Three Different Data Sources for the Upper Mississippi River Basin

dc.contributor.author Santhi, Chinnasamy
dc.contributor.author Gassman, Philip
dc.contributor.author Secchi, Sylvia
dc.contributor.author Srinivasan, Raghavan
dc.contributor.department Center for Agricultural and Rural Development
dc.date 2018-02-17T13:39:52.000
dc.date.accessioned 2020-06-30T01:02:06Z
dc.date.available 2020-06-30T01:02:06Z
dc.date.embargo 2016-02-19
dc.date.issued 2008-02-01
dc.description.abstract <p>This study presents the results of comparing land use estimates between three different data sets for the Upper Mississippi River Basin (UMRB). The comparisons were performed between the U.S. Department of Agriculture (USDA) Natural Resource Conservation Service (NRCS) National Resource Inventory (NRI), the U.S. Geological Survey (USGS) National Land Cover Data (NLCD) database, and a combined USDA National Agricultural Statistics Service (NASS) Agricultural Census – NLCD dataset created to support applications of the Hydrologic Unit Model for the U.S. (HUMUS). The comparison was performed for 1992 versions of the datasets because that was the only consistent year available among all three data sources. The results show that differences in land use area estimates increased as comparisons shifted from the entire UMRB to smaller 4- and 8-digit watershed regions (as expected). However, the area estimates for the major land use categories remained generally consistent among all three data sets across each level of spatial comparison. Differences in specific crop and grass/forage land use categories were magnified with increasing refinement of the spatial unit of comparison, especially for close-grown crops, pasture, and alfalfa/hayland. The NLCD close-grown crop area estimates appear very weak relative to the NRI and HUMUS, and the lack of specific crop land use estimates limits its viability for UMRB agricultural-based modeling scenarios. However, the NLCD is a key source of non-agricultural land use data for HUMUS and supplemental wetland land use area estimates for the NRI. We conclude that comparisons between more recent versions of the data sets (i.e., 1997 NRI, 1997 or 2002 Agricultural Census, and 2001 NLCD) would not result in significant additional insights and that the 1997 NRI is a viable land use data source for current CARD UMRB water quality modeling studies. However, adoption of other land use data such as USDA-NASS remote sensing data should be investigated.</p>
dc.identifier archive/lib.dr.iastate.edu/card_technicalreports/42/
dc.identifier.articleid 1040
dc.identifier.contextkey 8180651
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath card_technicalreports/42
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/12402
dc.source.bitstream archive/lib.dr.iastate.edu/card_technicalreports/42/08tr48.pdf|||Sat Jan 15 00:12:24 UTC 2022
dc.subject.disciplines Environmental Policy
dc.subject.disciplines Natural Resource Economics
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.keywords agricultural land
dc.subject.keywords cropland
dc.subject.keywords HUMUS
dc.subject.keywords land use area estimates
dc.subject.keywords NLCD
dc.subject.keywords non-agricultural land
dc.subject.keywords NRI
dc.subject.keywords UMRB
dc.subject.keywords water quality modeling
dc.title Comparison of Land Use Area Estimates from Three Different Data Sources for the Upper Mississippi River Basin
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication 1a6be5f1-4f64-4e48-bb66-03bbcc25c76d
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