摘要
本文采用称重法研究了黄土丘陵区沙打旺草地对降雨的截留作用。结果表明：截留量（Ｐ＿ｊ）与草地盖度（Ｃ）、降雨强度（Ｉ）及降雨时间（ｔ）之间存在Ｐ＿ｊ＝－０．０１８６＋０．０６０１ＣＩｔ－０．００６１２Ｃ￣２Ｉ￣２ｔ￣２的关系；沙打旺草地最大截留率为２９．７％；同时分析了盖度、雨强、降雨时间对草地截留的影响。
The intercepting rainfall of grassland of Astragulus adsurgens in loess hilly region wasstudied by using weight method in this paper.The result showed that there was an equatoin as fol-lows,p_j=-0. 0186 + 0.0601CIt-0.00612C￣2I￣2t￣2 among interecepting rainfall(P_j),grasslandcoverage(C),rain intensity(I),and rain time(t).The maximum intercepting rainfall rate was29.7%. Meanwhile,the impact of coverage,rain intensity and rain time on intercepting rainfall wasdiscussed.
出处
《水土保持通报》
CSCD
北大核心
1995年第3期28-32,共5页
Bulletin of Soil and Water Conservation
关键词
黄土丘陵区
沙打旺草地
草地截留
loess hilly region grassland of Astragulus adsurgens intercepting rainfall of grassland
