中文摘要：

在从 2000 ～ 2010 的西藏的降雨 erosivity 用数据从热带降雨测量使命(TRMM ) 3B42 降雨测量算法导出的每日的降雨基于简化侵蚀预言模型被估计。半月刊腐蚀降雨和降雨 erosivity 用气象站数据被验证。在西藏的年度降雨 erosivity 以及它的季节、年度的变化的空间分发也被检验。结果显示出数据能作为其他的数据来源服务在从稀疏地分布式的气象站的数据仅仅是可得到的区域估计降雨 erosivity 的那 TRMM 3B42。在西藏的降雨 erosivity 的空间分发通常类似于年度降雨平均的多年的分发。在西藏的年度降雨 erosivity 从东南减少了到西北。降雨 erosivity 的集中度从东南显示出一个增加的趋势到西北。高降雨 erosivity 伴随低降雨 erosivity 集中度并且反过来也如此。降雨 erosivity 在中间、西方的西藏增加了并且在这研究的 11 年期间在东南的西藏减少了。

英文摘要：

Rainfall erosivity in Tibet from 2000 to 2OlO was estimated based on simplified erosion prediction model using daily rainfall data derived from the Tropical Rainfall Measurement Misssion （TRMM） 3B42 rainfall measurement algorithm. Semi- monthly erosive rainfall and rainfall erosivity were validated using weather station data. The spatial distribution of annual rainfall erosivity as well as its seasonal and annual variation in Tibet was also examined. Results showed that TRMM 3B42 data could serve as an alternative data source to estimate rainfall erosivity in the area where only data from sparsely distributed weather stations are available. The spatial distribution of rainfall erosivity in Tibet generally resembles the distribution of multi-year average of annual rainfall. Annual rainfall erosivity in Tibet decreased from the southeast to the northwest. The concentration degree of rainfall erosivity shows an increasing trend from the southeast to the northwest. High rainfall erosivity accompanies low rainfall erosivity concentration degree and vice versa. Rainfall erosivity increased in the middle and western Tibet and decreased in the southeastern Tibet during the 11 years of this study.