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QINGHAI LAKE WATER DYNAMIC ANALYSIS

LU Qing-zhang

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Abstract

using 1959～2004 documents,we analyse the dynamical change of Qinghai lake water level and quantity by establishing the Water dynamic equilibrium equation,which related to the rainfall,surface water supply,underground water recharge,and evaporation of Qinghai lake.The result shows that the Qinghai lake water level dropped 3.78m,lake area reduced 362.3km2,and water storage decreased 178×108m3 during the 45 years from 1959 to 2004.But this trend was reserved during 2004～2010,the water level rose nearly 99cm,the lake area expands 135.07 km2 and water storage increased nearly12×108m3 from 2004 to 2010.

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What this paper is about

using 1959～2004 documents,we analyse the dynamical change of Qinghai lake water level and quantity by establishing the Water dynamic equilibrium equation,which related to the rainfall,surface water supply,underground water recharge,and evaporation of Qinghai lake.The result shows that the Qinghai lake water level dropped 3.78m,lake area reduced 362.3km2,and water storage decreased 178×108m3 during the 45 years from 1959 to 2004.But this trend was reserved during 2004～2010,the water level rose nearly 99cm,the lake area expands 135.07 km2 and water storage increased nearly12×108m3 from 2004 to 2010.

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Available abstract

using 1959～2004 documents,we analyse the dynamical change of Qinghai lake water level and quantity by establishing the Water dynamic equilibrium equation,which related to the rainfall,surface water supply,underground water recharge,and evaporation of Qinghai lake.The result shows that the Qinghai lake water level dropped 3.78m,lake area reduced 362.3km2,and water storage decreased 178×108m3 during the 45 years from 1959 to 2004.But this trend was reserved during 2004～2010,the water level rose nearly 99cm,the lake area expands 135.07 km2 and water storage increased nearly12×108m3 from 2004 to 2010.

Key concepts: Qinghai lake, Environmental science, Groundwater recharge, Hydrology (agriculture), Water level, Surface water, Water storage, Evaporation

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