中文摘要：

三河的来源区域(TRSR ) ，在中国在 Qinghai 西藏高原定位了，受不了严肃的结冰融化(英尺) 在中国的侵蚀。就唯一的 eco 环境和在 TRSR 的 FT 过程的开车因素而言，我们介绍英尺侵蚀的驱动力因素(降雨 erosivity 和风在英尺时期期间回答紧张) 并且降水在英尺时期期间(显示改变阶段的水内容) 。目的是在 TRSR 建立英尺侵蚀的一个改进评估方法。方法与 92% 的全面精确在学习区域有好适用性。从 2000 ～ 2015 的英尺侵蚀的空间、时间的变化被分析。结果证明英尺侵蚀在 TRSR 是广泛地分布式的，与细微、温和的侵蚀大多数广泛地正在被散布，由中等侵蚀列在后面。在三个分区之中，黄河的来源区域有最细微的侵蚀紧张，而长江的来源区域的侵蚀紧张是最严重的。细微改进能从 2000 ～ 2015 在整个学习区域上处于英尺侵蚀的条件被观察。植被范围是与稀少的植被或赤裸的土地在地区影响英尺侵蚀的紧张的主导的因素，而气候因素在高植被范围区域起一个重要作用。倾斜 > 28

英文摘要：

The three-river source region（TRSR）, located in the Qinghai-Tibet Plateau in China, suffers from serious freeze-thaw（FT） erosion in China. Considering the unique eco-environment and the driving factors of the FT process in the TRSR, we introduce the driving force factors of FT erosion（rainfall erosivity and wind field intensity during FT period） and precipitation during the FT period（indicating the phase-changed water content）. The objective was to establish an improved evaluation method of FT erosion in the TRSR. The method has good applicability in the study region with an overall precision of 92%. The spatial and temporal changes of FT erosion from 2000 to 2015 are analyzed. Results show that FT erosion is widely distributed in the TRSR, with slight and mild erosion being the most widely distributed, followed by moderate erosion. Among the three sub-regions, the source region of the Yellow River has the slightest erosion intensity, whereas the erosion intensity of the source region of Yangtze River is the most severe. A slight improvement can be observed in the condition of FTerosion over the whole study region from 2000 to 2015. Vegetation coverage is the dominant factor affecting the intensity of FT erosion in the zones with sparse vegetation or bare land, whereas the climate factors play an important role in high vegetation coverage area. Slopes〉28° also have a significant effect on the intensity of FT erosion in the zones. The results can provide a scientific basis for the prevention and management of the soil FT erosion in the TRSR.