华南兴国县影响土壤侵蚀时空动力学的环境因素 |
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作者姓名: | WANG Ku SHI Xue-Zheng YU Dong-Sheng SHI De-Ming CHEN Jing-Ming XU Bin-Bin LIANG Yin LI De-Cheng |
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作者单位: | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;Department of Geographic Science, Minjiang University, Fuzhou 350011 (China);State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;Department of Geography, University of Toronto, Toronto M5S 3G (Canada);State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn;State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: kwang@mju.edu.cn |
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基金项目: | Project supported by the National Natural Science Foundation of China (No. 40471081), the Innovation Programme of Chinese Academy of Sciences (No. KZCX3-SW-422), and the Canadian International Development Agency, Canada. |
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摘 要: | By using soil erosion maps of four different time periods and a digital elevation model (DEM), in combination with the remote sensing and GIS technologies, soil erosion dynamics in Xingguo County of Jiangxi Province in South China were analyzed on both temporal and spatial scales in soils of different parent materials, altitudes and slopes. The results showed that from 1958 to 2000 severe soil erosion was coming under control with a decreasing percentage of the land under severe erosion. It was also found that the soils developed from Quaternary red clay, granite and purple shale were more susceptible to soil erosion and that areas sitting between 200 to 500 m in altitude with a slope less than 3° or between 7° to 20° where human activities were frequent remained to be zones where soil erosion was most likely to occur. These areas deserve special attention in monitoring and controlling.
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关 键 词: | 土壤 侵蚀性 兴国县 中国 时空动态变化 GIS 地理信息系统 |
收稿时间: | 2005-04-06 |
修稿时间: | 2005-06-01 |
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