摘要
以黄河第一大支流渭河流域为研究对象,基于长期水文观测资料,就不同时间尺度(包括月、年、10年)降水特征及其变化规律进行了分析,结合水资源变化的分析结果,对流域水资源变化的动因进行探讨,指出降水减少是渭河流域水资源减少的最直接、最主要的原因,此外,人类活动影响也起到一定的作用。
Based on the long hydrological observation records, the precipitation characters ranged from months to decades and its variations＇regularities were discussed by taking example of Weihe River-the largest tributary of Yellow River. According to the analysis on the changes of water resources, the motivation of changes was analyzed, and it was pointed out that： The decrease of precipitation and the influence of human activities are the most direct and important reasons for the decrease of water resources in Weihe Basin.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2006年第1期85-87,共3页
Journal of Arid Land Resources and Environment
基金
国家科技攻关项目"2002BA901A43"项目
关键词
渭河流域
降水特征变化
水资源
人类活动
Weihe Basin
changes of precipitation characters
water resources
human activities
