黄土丘陵区小流域暴雨时空变化特征分析  

Characteristic Analysis of Rainstorm Temporal and Spatial Variability on Small Catchments in Loess Hilly Region

作　　者：王玲玲[1,2] 刘明元 李伟伟[4] 杨春霞[1] 

机构地区：[1]黄河水利科学研究院,郑州450003 [2]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 [3]新野县水利局,河南新野473500 [4]郑州大学环境技术咨询工程公司,郑州450003

出　　处：《水土保持研究》2010年第1期225-227,共3页Research of Soil and Water Conservation

基　　金：水利部公益性行业科研专项(200701035);黄土高原土壤侵蚀与旱地农业国家重点实验室基金(10501-235)

摘　　要：了解黄土丘陵区暴雨时空变化特征,有利于深入研究土壤侵蚀机理。利用雨量站控制条件较好的桥沟小流域资料,统计分析了该流域30min、60min、120min和150min时段降雨及次降雨空间变化的关系,时段降雨分布同次降雨分布的内在联系以及次降雨的时空变化过程。结果表明,当分析时段达到一定长度以后,时段降雨对次降雨分布具有一定的代表性;降雨空间变化程度的相关距离关系随距离的增加而减弱,从时间上看,暴雨中心位置是不断变化的。In order to better understand the temporal and spatial characteristics of rainstorm in loess hilly region,using small watershed data of Qiaogou,the relationship between 30 min,60 min,120 min,150 min period and rainfall were statistically analyzed.Furthermore,the temporal and spatial variations of rainfall and the intrinsically link between rainfall and period rainfall were studied.The results showed that when the period reaches a certain length,the rainfall is distributed fairly representatively by period rainfall;With the increasing of distance,the relativity of rainfall between rainfall stations weakened.With the change of time,the center location of rainstorm is constantly changing.All the results were useful to understand the mechanism of soil erosion further in-depth.

关 键 词：暴雨 时空分布 小流域 黄土丘陵区 

分 类 号：P426.616[天文地球—大气科学及气象学] P426.614