青海湖水量动态变化分析

利用1959年～2004年的资料,建立湖面降水、地表水入湖、地下水补给及湖面蒸发耗水之间的水平衡方程,对青海湖水位、水量变化进行动态分析,结果表明:1959年～2004年的45年间,青海湖水位下降3.78m,湖面面积减小362.3km2,储水量减少178×108m3。但从2004年开始逆转,青海湖水位2010年比2004年上升近99cm,湖面面积2010年比2004年扩大135.07km2,储水量增加近12×108m3。

QINGHAI LAKE WATER DYNAMIC ANALYSIS

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 wa- ter level dropped 3.78m,lake area reduced 362.3km^2 ,and water storage decreased 178 × 10^8m^3 during the 45 years from 1959 to 2004. But this trend was reserved during 2004 0 2010,the water level rose nearly 99cm, the lake area expands 135.07 km^2 and water storage increased nearly12 × 10^8m^3 from 2004 to 2010.