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渭河流域降雨侵蚀力时空变化研究
柴雪柯1; 高鹏1,2; 蒋观滔1; 穆兴民1,2
2016
Source Publication水土保持研究
Volume23Issue:3Pages:25-36
Abstract

降雨侵蚀力是反映流域降雨侵蚀能力的重要指标。基于渭河流域及周边地区25站56年的日降雨量,分析了
流域降雨侵蚀力及其时空变化。结果表明:渭河流域降雨侵蚀力与降雨量的空间分布趋势基本一致,由东南向西北
递减,变化范围为1 000~3 600MJ·mm/(hm2·h·a);降雨侵蚀力在年内呈单峰型分布,8月最大,1月最小,但6—
9月占年侵蚀力的70%左右;渭河流域各站降雨侵蚀力年际差异显著;降雨侵蚀力年际变率为0.40~0.54,尤其20
世纪80年代以来随机波动大且表现出一定减小趋势,但整体并无显著增加或减少趋势。

Other Abstract

Rainfall erosivity is an index of erosion ability of rain water.Using the daily rainfall data of twentyfive
meteorological sites in Weihe River,we estimated the rainfall erosivity and analyzed its spatiotemporal
variability.The results showed that the spatial characteristic of rainfall erosivity was consistent with the spatial
distribution of rainfall,declining from southeast to northwest and varying from 1 000to 3 600MJ·mm/
(hm2·h·a).The distribution of rainfall erosivity is unimodal,the max value occurred in August,the minimum
was observed in January and rainfall erosivity from June to September occupied about 70%of the whole
year.The inter-annual variation was significant and coefficient of variation was between 0.4and 0.54.Especially
random fluctuations and a decreasing trend had been showed since the 1980s,but there was no significant
trends of variation totally.

Keyword日降雨量 降雨侵蚀力 时空变化 渭河流域
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8694
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所
2.中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
柴雪柯,高鹏,蒋观滔,等. 渭河流域降雨侵蚀力时空变化研究[J]. 水土保持研究,2016,23(3):25-36.
APA 柴雪柯,高鹏,蒋观滔,&穆兴民.(2016).渭河流域降雨侵蚀力时空变化研究.水土保持研究,23(3),25-36.
MLA 柴雪柯,et al."渭河流域降雨侵蚀力时空变化研究".水土保持研究 23.3(2016):25-36.
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