水土保持研究2011，Vol.18Issue(3)：110-115,120,7.
洮河干流径流量变化趋势分析
Trend Analysis on Runoff of Taohe River Main Curren
朱佳君 1张钰 1唐颖丰 2何彬1
作者信息
- 1. 兰州大学,资源环境学院,兰州,730000
- 2. 甘肃省水利厅,水利工程建设造价与规费中心,兰州,730030
- 折叠
摘要
Abstract
The runoff variation is a comprehensive reflection of the changes of regional climate and the underlying surface of the earth.Understanding and awareness of its change are of great significance for the development of river resources.Based on the Taohe River basin, the upper, middle and lower reaches of the Xiaba groove, Minxian, Lijiacun, Red flag control hydrological stations measured four months, the annual flow of information, the Taohe River runoff changes and trend were analyzed by using different indicators, and was tested by using the latest Empirical Mode Decomposition method.The results show that: From the 50s of 20th century until present, the Taohe River basin runoff is increasingly uneven distribution of low, gradually from upstream to downstream change from even to uneven.This river has large annual variation of runoff, the overall trend showed decreases, the abundant even waterless year appears alternately.Inter-annual changes in runoff of upstream and downstream of Taohe River are steady; middle reaches of some tributaries of import, inter-annual changes in runoff increased.Taohe of runoff process is corresponding with rainfall,changes in runoff varies with rainfall, and runoff always lags.关键词
洮河流域/月(年)径流量/年内分配/年际变化/经验模态分解(EMD)法Key words
Tao River Basin/ monthly (annual) runoff/ annual distribution/ annual change/ empirical mode decomposition method分类
天文与地球科学引用本文复制引用
朱佳君,张钰,唐颖丰,何彬..洮河干流径流量变化趋势分析[J].水土保持研究,2011,18(3):110-115,120,7.
