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三江源地区的地理、地质和气候都具有特殊性,本区内主要以冻融侵蚀为主结合其他各类型的土壤侵蚀.由于受诸多因素限制,到目前为止,国内外对其研究甚少,有关其强度分级评价方面的研究则更为鲜见.本文具体分析了三江源地区冻融侵蚀动力,通过野外调查建立解译标志分析,结合冻融发生的条件,进行了冻融侵蚀强度的分级.结果表明,三江源地区冻融侵蚀具有分布范围广,不同强度冻融侵蚀空间分布明显,冻融侵蚀地区分布差异明显等特点.
The geography, geology and climate in the Three River Source Region are both special and the main erosion and erosion in this region are combined with other types of soil erosion.Because of many factors, so far, few studies have been done at home and abroad, The research about its grading evaluation is even more rare.This paper analyzes the driving force of the freeze-thaw erosion in the Three River Source Region, analyzes the signs of the interpretation through the field investigation, and combines the freezing and thawing conditions, The results show that the freeze - thaw erosion in the Three River Source Region is characterized by a wide range of distribution, obvious spatial distribution of freeze - thaw erosion under different intensities, and obvious differences in the distribution of freeze - thaw erosion.