| 近30年来密云水库上游水土流失动态监测 |
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| 引用本文： | 姜琳琳,吴炳方.近30年来密云水库上游水土流失动态监测[J].测绘与空间地理信息,2013(10):140-145. |
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| 作者姓名： | 姜琳琳 吴炳方 |
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| 作者单位： | 1. 长春市市政工程设计研究院,吉林长春,130012
2. 中国科学院遥感应用研究所农业与生态遥感实验室,北京,100101 |
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| 摘 要： | 使用修正的通用土壤流失方程RUSLE，综合考虑降雨、土壤可蚀性、地形、土地覆盖和水土保持措施等因素，计算得密云水库上游地区1990年、2000年和2008年3期的土壤侵蚀数据，并对土壤侵蚀变化结果及其原因进行分析，发现：①研究区近20年水土流失状况经历由加剧到减轻的过程，但总体来说是减轻的，1990～2008年减轻区面积和加剧区面积分别为3083．11km。和2287．71km2；②研究区水土流失变化的原因主要为以土地利用类型变化为特征的人为因素，降雨也有影响，而与坡度没有关系。
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| 关 键 词： | 水土流失 RUSLE 土地利用类型 遥感 GIS |
Dynamic Monitoring of Soil Loss in Miyun Reservoir in Last Thirty Years |
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| JIANG Lin-lin
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WU Bing-fang.Dynamic Monitoring of Soil Loss in Miyun Reservoir in Last Thirty Years[J].Geomatics & Spatial Information Technology,2013(10):140-145. |
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| Authors: | JIANG Lin-lin WU Bing-fang |
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| Institution: | JIANG Lin - lin1 , WU Bing - fang2 (1. Changehun Municipal Engineering Design ＆ Research Institute, Changchun 130012, China; 2. Remote Sensing Research Center of Agriculture and Ecology, Institute of Remote Sensing Applications, Beijing 100101, China) |
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| Abstract: | In this paper, the author uses RUSLE and takes into account rainfall, soil erodibility, topography, land cover and soil con- servation practice to calculate soil loss of three years of 1990, 2000 and 2008 in Miyun reservoir upstream. Then the change of soil e- rosion and the reason of it are analyzed. Finally two conclusions are properly drawn： 1 ） the soil erosion intensity has undergone an in- crease in the first decade, and then decreased process. But on a whole it has been decreased. From 1990 to 2008, the areas of de- creased and increased soil erosion intensity are 3083.11 km2 and 2287.71 km2 respectively; 2） it is mainly because of factitious fac- tors characterized by change of land use types that the intensity of soil erosion has been changed. Rainfall has some influence, too. But it has nothing to do with slope steepness. |
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| Keywords: | soil erosion RUSLE land use type remote sensing GIS |
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