水土保持研究2013，Vol.20Issue(2)：15-18,4.
共和盆地塔拉滩土壤侵蚀潜在危险度评价
Assessment on the Degrees of Soil Erosion Potential Risk in Tala Shoal of Gong-he Basin
摘要
Abstract
Tracer technique of geochemical radioisotopes 137Cs was used to estimate the rate of soil erosion in the northeastern Tibetan Plateau, Tala shoal grassland of Gonghe Basin, field investigation and soil survey were adopted to establish the soil bulk density and soil thickness map. By average annual rate of soil erosion, soil bulk density and soil thickness, the years of soil loss by erosion was mapped, which was based on Arc-GIS 9. 3. According to the characteristics of soil erosion and standard issued by ministry of water resources, degrees of potential risk of soil erosion have been classified in Tala shoal. The results showed that mild type of soil erosion dominated the main area in this region, the area was 1 692. 98 km2 , accounting for 61. 64% of the total area. For SEPRI, it was 2. 42, belonging to a light risk zone.关键词
土壤侵蚀潜在危险度/分级/137Cs/GIS/共和盆地塔拉滩Key words
soil erosion potential risk/ gradation/ 137Cs/ GIS/ Tala Shoal of Gong-he Basin分类
农业科技引用本文复制引用
郭丽霞,沙占江,陶炳德,郭丽红,张娟..共和盆地塔拉滩土壤侵蚀潜在危险度评价[J].水土保持研究,2013,20(2):15-18,4.基金项目
国家自然科学基金项目(40961015) （40961015）
中国科学院"西部之光"项目 （）
中国科学院"百人计划"项目 （）
青海省科技厅应用基础研究项目(2012-Z-717) （2012-Z-717）
