Mapping conservation reserve program (CRP) grasslands using multi‐seasonal thematic mapper imagery

Autor:	Re-Yang Lee, Stephen L. Egbert, M. Duane Nellis, Kevin P. Price, Ryan Boyce
Rok vydání:	1998
Předmět:	Hydrology geography Ground truth geography.geographical_feature_category Digital mapping Geography Planning and Development Forestry Groundwater recharge Woodland Grassland Habitat Thematic Mapper Environmental science Conservation Reserve Program Water Science and Technology
Zdroj:	Geocarto International. 13:17-24
ISSN:	1752-0762 1010-6049
DOI:	10.1080/10106049809354660
Popis:	This is a critical time for evaluating the status and success of the U.S. Conservation Reserve Program (CRP), a program that has resulted in the conversion of millions of hectares of cropland to grassland, woodland, and other conservation uses. In order to evaluate the effects of CRP on soil erosion, wildlife habitat, water pollution, and groundwater recharge, however, it is essential to have detailed digital maps that accurately identify CRP lands. Remote sensing techniques offer a means for developing such a database in an economical and accurate way. Utilizing multi‐seasonal imagery in an unsupervised classification technique, highly accurate maps of cropland and grassland were produced for 1987 and 1992 for Finney County, Kansas. Post‐classification differencing identified regions of cropland that had changed to grassland between the two years, indicating land that had been converted to CRP. Comparison of the CRP map with ground truth sources produced an accuracy of approximately 88%. Digital...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::15becbdf9d0286361bbec8b5eb2bbacf https://doi.org/10.1080/10106049809354660 Zobrazit plný text záznamu