干旱地区农业研究Issue(2)：234-238,5.
秃尾河年径流变异点综合诊断研究
Research on the comprehensive diagnosis of change point of tuwei river’s yearly runoff
摘要
Abstract
Research on evolution of hydrology and water resources in river basin can provide an important decision basis for the utilization and protection of basin water resources and regional sustainable development of economy and soci -ety .In this study ,the watershed runoff and precipitation trends and variability are analyzed according to the annual flow and precipitation data in 1956 - 2004 of Tuwei River Watershed outlet station-Gaojiachuan station .The results show that the precipitation trend and variability is not obvious ,and the runoff decreased significantly .It is determined eventually that the jump variation of runoff occurred in 1978 by comprehensive diagnosis with various methods .The rationality of re-sults is reasoned according to its origin combined with actual survey .Comprehensive diagnosis effectively solves poor reli-ability for single test and inconsistency between various tests ,and has certain effects for identification and test to variation point of complex time series .关键词
变异点/综合诊断/秃尾河Key words
variation point/comprehensive diagnosis/Tuwei River分类
天文与地球科学引用本文复制引用
杨筱筱,王双银,王建莹,杨会龙..秃尾河年径流变异点综合诊断研究[J].干旱地区农业研究,2014,(2):234-238,5.基金项目
西北农林科技大学基本科研业务费专项资金（QN2009088）；陕西省水利科技计划项目“陕北秃尾河流域水资源演变情势研究” （）
