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Position: Home > Articles > Dynamic of China’s cultivated land and landcover changes of its typical regions based on remote sensing data Journal of Forestry Research 2001,12 (3)

Dynamic of China’s cultivated land and landcover changes of its typical regions based on remote sensing data

作  者：
Jiahua Zhang;Wenjie Dong;Changyao Wang;Jiyuan Liu;Fengmei Ya
单  位：
College of Ecological Engineer, Beijing Forestry University, Beijing, Chin;Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, China;The Global Change Research Center for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
关键词：
rate of;cultivated land;km2;cover changes;land;decrease
摘  要：
Using the multi-temporal Landsat data and survey data of national resources, the authors studied the dynamics of cultivated land and landcover changes of typical ecological regions in China. The results of investigation showed that the whole distribution of the cultivated land shifted to Northeast and Northwest China, and as a result, the ecological quality of cultivated land dropped down. The seacoast and cultivated land in the area of Yellow River Mouth expanded by an increasing rate of 0.73 km?a-1, with a depositing rate of 2.1 km?a-1. The desertification area of the dynamic of Horqin Sandy Land increased from 60.02% of the total land area in1970s to 64.82% in1980s but decreased to 54.90% in early 1990s. As to the change of North Tibet lakes, the water area of the Namu Lake decreased by 38.58 km2 from year 1970 to 1988, with a decreasing rate of 2.14 km2?a-1.

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