| 中国土壤侵蚀分区及土壤流失调查 |
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| 引用本文： | 杨新.中国土壤侵蚀分区及土壤流失调查[J].自然灾害学报,2011(4). |
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| 作者姓名： | 杨新 |
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| 作者单位： | 北京师范大学全球变化与地球系统科学研究院; |
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| 摘 要： | 当前我国水土流失严重。治理水土流失需要掌握水土流失的现状,以土壤侵蚀分区为基础的水土流失调查高效可靠。在研究比较以往土壤侵蚀分区方案方法的基础上,尝试进行了中国的土壤侵蚀分区,并选择具体区域调查了土壤流失状况。首先根据各区域的土壤侵蚀外营力、侵蚀量等量化指标,将全国分为4个1级区,各1级区内再划分2级、3级区。以东北黑土漫岗丘陵区为例进行的水土流失调查表明,该区域的土壤侵蚀模数大于水利部《土壤侵蚀分类分级标准》中规定的容许流失量,因而急需采取水保措施。
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| 关 键 词： | 土壤侵蚀 侵蚀分区 土壤流失调查 |
Stud of soil erosion regionalization and soil loss survey in China |
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| YANG Xin.Stud of soil erosion regionalization and soil loss survey in China[J].Journal of Natural Disasters,2011(4). |
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| Authors: | YANG Xin |
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| Institution: | YANG Xin(College of Global Change and Earth System Science,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | Soil erosion zoing could provide credible information on the soil loss all about the country,which is the foundation of water and soil conservation.Based on a detailed discussion about the previous methods,a scheme of soil erosion zoning in China was founded.Four first-grade soil erosion zoning in China were proposed.Second-grade and third-grade zoings were also put forward.A soil loss survey of the regions of low mountain,hills and hillock in northeast China was made as an example.Results show that the soi... |
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| Keywords: | soil erosion erosion regionalization soil loss survey |
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