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首页> 外文会议>2010 International conference of international conference on combating land degradation in agricultral areas. >Soil and Water Erosion Development Tendency of Northern Arid Regions of China in Recent Five Years
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Soil and Water Erosion Development Tendency of Northern Arid Regions of China in Recent Five Years

机译：近五年来中国北方干旱地区水土流失发展趋势

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Soil Erosion in Northern Arid Region is the most serious in China, especially in Loess Plateau. It's important to do research on the soil erosion dynamic evolution in Northern Arid Regions of China in recent five years for people to master the law of the local soil erosion, approach the erosion mechanism and management methods and promote the ecological environment construction. The thesis took 6 prownces in China as the study area (Qinghai, Gansu, Ningxia, Inner Mongolia, Shaanxi and Shanxi). First, established the model to study the trend of soil erosion area evolution and calculate the soil erosion variable-area in recent five years. Then did a comparative study on the important changes of the land use types associated with soil erosion in recent five years, which showed the increasing trend of the woodland, grassland and water area and the decreasing trend of farmland on the whole. At last, it analyzed management effects of soil erosion in the study area in recent years. According to the research, the soil erosion area was 5022.9 x104hm2 in end of 2008,113. 12 x 104hm2 absolute value diminished and 2.20% relative value diminished compared with the soil erosion area in end of 2003.
机译：北方干旱地区的土壤侵蚀在中国最为严重，尤其是在黄土高原地区。研究近五年来我国北方干旱地区水土流失动态演变对人们掌握当地水土流失规律，探索水土流失机理和治理方法，促进生态环境建设具有重要意义。本文以中国6个省（青海，甘肃，宁夏，内蒙古，陕西和山西）为研究对象。首先，建立了研究水土流失面积演变趋势并计算近五年水土流失变化面积的模型。然后对近五年来土地利用类型与水土流失相关的重要变化进行了比较研究，结果显示林地，草地和水域的增加趋势总体上是耕地的减少趋势。最后，分析了近年来研究区水土流失的治理效果。根据研究，到2008年底，水土流失面积为5022.9 x104hm2，113。与2003年底的水土流失面积相比，绝对值减少了12 x 104hm2，相对值减少了2.20％。

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