Analysis of runoff change in the past 60 years for Bobai Hydrological Station on Nanliu River
Nanliu River is the largest river in Guangxi that flows into the sea alone.In recent years,it has become one of the key watersheds for ecological protection and environmental governance projects in Guangxi.Based on the recent 60 years of runoff measuring data of Bobai Hydrological Station,the representative station in the middle and upper reaches of Nanliu River,the author studied the runoff change trend by regression analysis method,moving av-erage method and M-K analysis method.The results of study demonstrate the inter-annual change of runoff in the upper and middle reaches of Nanliu River varies greatly,the runoff distributed unevenly within a year and mostly concentrated in the flood season.The annual runoff in the middle and upper reaches of Nanliu River has a slight,not significant decreasing trend in the recent 60 years.The runoff change is closely related to precipitation.The run-off change in the middle and upper reaches of Nanliu River is influenced mostly by meteorological change,and is af-fected by construction of hydraulic projects and human activities such as water taking from the river.
Bobai Hydrological StationrunoffchangeanalysisNanliu River
万方数据
维普
