The Spatial-temporal Changes of the Land use/cover in theDongting lake Area of Central China during the Last Decade

摘要

Based on the Chinese resource andenvironment database, and using the Landsat TM andETM data acquired in 1990 and 2000 respectively, thespatial-temporal characteristics of land use/coverchanges in the Dongting lake area of central China wasanalyzed. The result showed that cultivated landdecreased by 0.57% of total cultivated land. Built -upland and water area expanded, with an increase of 8.97%and 0.43% respectively. 94 percent of the croplanddecreased was changed into water (mostly to fishpond)and built-up areas. Land-use changed most quickly incities, and the slowest in the north and east of the studyarea.