Water Topics

The Instream Ecological Water Flow Research at the Lower Reach of Guanting Reservoir on Yongdinghe River, Beijing

  • 1 National Engineering Laboratory for Biomass Power Generation Equipment, Renewable Energy Institute, North China Electric Power University, Beijing 102206, China;
    2 Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received date: 2010-08-26

  Online published: 2010-11-04


Yongding River, as the mother river of Beijing city, has been dried up from Sanjia Dian since 1980s. The naked riverbed and the desertification of its both sides play a main role of sandy weather in spring of Beijing. The Quaternary period underground water of the west Beijing has been drained off, because of the overload of the underground water plus with no supply pouring into. The ecological system of Yongding River has severely been devastated. If we want Yongding River to be recovered, we should clarify the quantity of the most active and the most important water. This paper calculated the instream ecological flow in three monitored sections of Yongding River Guanting Reservoir with wetted perimeter method. The three sections are Guanting Reservoir (under dam), Yanchi and Lugou Bridge. Respectively, the flows in the instream of each section are 3.7 m3 s-1 (the normal flow year, P=50%, 1978 ) accounting for 20.7% of the average annual flow, 4.1 m3 s-1(the normal flow year, P=50%, 1981)accounting for 20.1% of the average annual flow and 1.3 m3 s-1(the normal flow year, P=50%,1978)accounting for 22.1% of the average annual flow. If the supplies are according to the calculated flows, Yongding River will return back from it. Still according to the Tennant method, the Yongding River will maintain a health situation.

Cite this article

MEN Bao-Hui, ZHANG Shi-Feng, XIA Jun . The Instream Ecological Water Flow Research at the Lower Reach of Guanting Reservoir on Yongdinghe River, Beijing[J]. Journal of Resources and Ecology, 2010 , 1(3) : 211 -215 . DOI: 10.3969/j.issn.1674-764x.2010.03.003


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