Abstract：Analysizing the past near 50 years hydrological data in the Hangbu River basin,the authors draw such conclusions:(1) the precipitation is the main source of the Hangbu River,the runoff increased with the increase of the precipitation in the watershed and the big flood happened in the 1954,1969,1991 while worst drought happening in the 1978,(2) typical hydrological stations' water levels were fluctuated with the precipitation,and the decent trend of water level of the Xiaotian Station was obvious from 1952 to 2000.The annual average of water level and runoff in the Longhekou Station varied greatly after the accomplishment of the dam because of the reservoir's function of regulating the outlet water.The Chaohu Lake's annual average of water level increased from 1955 to 2000 and the reason was that the bed of Chaohu Lake was filled up by sand carried by upward rivers,(3) the precipitation in the Hangbu Rivier watershed was influenced greatly by the solar action because the larger precipitation was corresponded with the sunspot relative number's peak value well in the same year.Through the relativity analysis of the El Nino in the earth and precipitation in the Hangbu River watershed,the result was that the precipitation's unconventionality mainly took place in the El-Nino year and the precipitation was controlled by the global climate change.
收稿日期: 2006-04-25
引用本文:
张海林,张卫国,俞立中,顾成军. 安徽巢湖杭埠河流域近50a来降水和径流特征探讨[J]. , 2006, 45(4): 0-0.
张海林,张卫国,俞立中,顾成军. Trend analysis of the precipitation and runoff of the Hangbu river watershed over the past 50 years. , 2006, 45(4): 0-0.
