[1]徐学选,穆兴民,蒋定生,等.黄土丘陵区降雨坡面再分配规律研究[J].水土保持研究,2002,9(03):249-250,253.
　XU Xuexuan,MU Xingmin,JIANG Dingsheng,et al.Study of Rainfall Redistribution on Slope in Loess Hilly Region[J].Research of Soil and Water Conservation,2002,9(03):249-250,253.
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黄土丘陵区降雨坡面再分配规律研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 9 期数: 2002年03期 页码: 249-250,253 栏目: 出版日期: 1900-01-01
Title:
Study of Rainfall Redistribution on Slope in Loess Hilly Region
作者:
徐学选1, 穆兴民1, 蒋定生1, 王玉2, 王炜1
1. 西北农林科技大学水土保持研究所, 陕西杨陵712100;
2. 延安宝塔区延河项目办
Author(s):
XU Xuexuan1, MU Xingmin1, JIANG Dingsheng1, WANG Yu2, WANG Wei1
1. Institute of Soil and Water Conservation, Northwest Sci tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China;
2. Baota Branch of Yanhe Comprehensive Control Office of the World Bank Loan Program in Yanan, Shaanxi, Ch
关键词:
降雨; 径流; 坡面再分配; 黄土丘陵区
Keywords:
rainfall; runoff; redistribution on slope; loess hilly region
分类号:
S273.29
摘要:
采用野外定位监测方法，以在安塞进行的降雨坡面再分配试验结果为依据，系统地分析了坡面降雨-径流-入渗的转化规律，降雨在坡面上的水文行为强度、方向等。研究结果表明：降雨的土壤入渗量受坡长、土地利用方式等因素影响，长坡能够接收较多雨量，试验年份（旱年）坡长每增加20m，草地约增加入渗0.77mm，灌木地增加0.92mm。不同土地利用方式下其降雨入渗量为灌木林地>草地>农地。长坡沙棘地较农坡地减少径流4.91mm，较长坡草地减少4.10mm。相当于灌木地减流56.52%，草地减流47.16%。雨水转化土壤水的转化系数Ka随坡长增加而增加。
Abstract:
Based on field study of rainfall redistribution on slope, authors put forward that the transition of rainfall to soil water is affected by slope length, land use form, etc.in both intensity and orientation.The results showed that soil could get more rainfall with slope length increasing from top to bottom.With a 20 m increase of slope length, the increase of incepted rainfall is 0.77 mm in grassland or 0.92 mm in shrub land.In the trial study, the 60 m slope length of shrub (or grassland) could reduce 4.91 mm (or 4.1 mm) of runoff compared with that of slope farmland, which accounts for 56.52% (47.16% )of runoff cut rate.K a representatives rate of water incepted from rainfall, was also in the same way.Forestry land had higher K a than that of grassland.It is also stated that the subsoil water movement is the main cause of slope soil water difference.

参考文献/References:

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备注/Memo

收稿日期:2001-11-20;改回日期:。
基金项目:中国科学院创新课题“黄土高原生态环境建设试验示范研究（KZCX02-06）；国家“十五”攻关“黄土高原中部水土保持型生态农业模式与技术研究”支助
作者简介:徐学选，男，（1966- ），陕西大荔人，博士，副研究员，主要从事生态水文研究，发表论文30余篇.

更新日期/Last Update: 1900-01-01