摘要
用方差分析与相关分析的方法对陕北主要河流无定河、清涧河、延河流域的年降雨、径流、输沙资料进行了统计分析。结果表明，各河流域的年降雨量随年代的推移呈减少趋势；各河流域的输沙量有极显著的差异，尤以无定河与清涧河的差异最为显著。各河流的输沙量随年代的进程也以减少的趋势在变化。通过对三河流域的降雨、输沙等变化规律的讨论，为发展三河流域的农业生产，制定水利水保的长期规划提供了一定的水文依据。
The annual precipitation, runoff and import sand of Wuding River, Qingjian River and Yanhe River, the three main rivers in North Shaanxi, were assayed with varience analysis. The results showed that, with the progress of time, there were less and less rainfall and import sand. The difference of import sand between Wuding River and Qingjian River was significant. To discuss the annual rain quantity and import sand regulation could provide some hydraulic materials for agrodevelopment and soil and water conservancy program in the Three River Valley.
出处
《干旱地区农业研究》
CSCD
北大核心
1998年第4期115-121,共7页
Agricultural Research in the Arid Areas
