【摘 要】
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The research on the land use/cover change is one of the frontiers and the hot spots in theglobal change research. Based on the Chinese resource and environment
【机 构】
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Inst. of Geodesy and Geophysics,Inst. of Geographic Sciences and Natural Resources Research,Faculty
论文部分内容阅读
The research on the land use/cover change is one of the frontiers and the hot spots in theglobal change research. Based on the Chinese resource and environment spatial-temporal database,and using the Landsat TM and ETM data of 1990 and 2000 respectively, we analyzed thespatial-temporal characteristics of land use/cover changes in the Dongting Lake area during the lastdecade. The result shows that during the last ten years there were three land-use types that hadchanged remarkably. The cultivated land decreased by 0.57% of the total cultivated land. Thebuilt-up land and water area expanded, with an increase of 8.97% and 0.43% respectively. Theconversion between land use types mostly happened among these three land-use types, especiallyfrequently between cultivated land and water area. The land-use change speed of land-use type isdifferent. Three cities experienced the greatest degree of land-use change among all the administrativedistricts, which means that the land use in these cities changed much quickly. The following changedarea was the west and south of the Dongting Lake area. The slowest changed area is the north andeast area.
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