黑河调水以来额济纳盆地湖泊蒸发量

Lake’s Evaporation in the Ejin Basin since Transfering Water from the Heihe River

在GIS技术支持下结合气候条件的变化,对黑河调水以来额济纳盆地的湖泊面积变化和蒸发量变化进行分析。结果表明:额济纳盆地湖泊主要包括东、西居延海和进素土海子,各湖泊在2002年7月后陆续恢复,其中东居延海2004年后常年蓄水,进素土海子在2008年后常年蓄水,西居延海为季节性湖泊。盆地内湖泊总面积最大达到103.85km2,年蒸发量最大达到1.79×108 m3。湖泊除受地表调水补给外,还受地下径流补给,2005年后东居延海每年接受地下径流净补给量约2 500×104~3 000×104 m3。

With the support of GIS technology and analysis of climatic conditions,this paper figured out the changes in lake's area and evaporation in the Ejin Basin since transfer water from the Heihe River by the year of 2000.The results showed that the lake in the Ejin Basin including the East Juyan Lake,the West Juyan Lake and the Jinsutu Lake restored in different time after July 2002.Lake's total area and evaporation grew from2002 to 2010 and decrease from2010 to 2012.The total area reached 103.85 km2 and the annual evaporation reached 179 million cubic meters in 2010.