中国土壤侵蚀分区及土壤流失调查  

Stud of soil erosion regionalization and soil loss survey in China

作　　者：杨新[1] 

机构地区：[1]北京师范大学全球变化与地球系统科学研究院,北京100875

出　　处：《自然灾害学报》2011年第4期131-136,共6页Journal of Natural Disasters

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。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. Secondgrade 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 soil erosion modulus of this region is more greater and some water and soil conservation should be carried out in this region.

关 键 词：土壤侵蚀 侵蚀分区 土壤流失调查 

分 类 号：S159[农业科学—土壤学]