摘要
利用重庆地区1951～2007年的降水资料，分析近57年降水量的变化特征，对降水量的时空特征、年际变化、年内变化和频次特征进行分析。结果表明，这57年来重庆地区降水阶段性变化特征明显，年降水变率集中在10％左右，属于正常变化，年内降水量变化较大，降水量主要集中在夏季汛期，这几十年以平水年和偏丰水年为主。同时，分析了降水量变化对该地区的径流量和水土流失的影响。
Based on the precipitation data from 1951 to 2007 in Chongqing area, it mainly analyzed the characteristic of precipitation variability in recent 57 years. In addition, it also analyzed the temporal and spatial characteristics, annual changes, during the year changes and frequency features of precipitation. The results showed that this 57 years obvious staggered change feature in rainfall appeared in Chongqing area, with the annual rainfall variability concentrated in about 10 percent that is belonging to the normal change. And there have been large changes of precipitation during the year, mainly concentrate in the summer flood season, dominated by the normal rainfall year or relatively wet year. At the same time, this paper also analyzed the influence of precipitation variability on runoff and soil erosion in this area.
出处
《亚热带水土保持》
2009年第2期9-13,共5页
Subtropical Soil and Water Conservation
关键词
降水量
变化
影响
重庆地区
Precipitation, Variability, Influence, Chongqing Areas
作者简介
蒋智（1984-），男，四川省广安市人，硕士研究生，研究方向为资源与环境信息系统。
