RELATIONSHIP BETWEEN QINGHAI LAKE LEVEL DESCENDING AND ARTIFICIAL WATER－CONSUMPTION

ＲＥＬＡＴＩＯＮＳＨＩＰＢＥＴＷＥＥＮＱＩＮＧＨＡＩＬＡＫＥＬＥＶＥＬＤＥＳＣＥＮＤＩＮＧＡＮＤＡＲＴＩＦＩＣＩＡＬＷＡＴＥＲ－ＣＯＮＳＵＭＰＴＩＯＮ￥ＰｅｎｇＭｉｎ（彭敏）ＣｈｅｎＧｕｉｃｈｅｎ（陈桂琛）ＺｈｏｕＬｉｈｕａ（周立华）（Ｎｏｒｔｈｗｅ...

Relationship between Qinghai lake level descending and artificial water-consumption

Qinghai Lake is the largest inland lake in China. It is a closed-drainage saline lake located at 3194m above sea level in the northeastern Qinghai-Xizang (Tibet) Plateau. Qinghai Lake region, about 36 ° 15′ – 38 ° 20′ N and 97 ° 50′ – 101 ° 20′ E, is a closed basin surrounded by a few mountains. Drainage area is 29,66lkm². The area of lake body was 4304.5km² in 1986. The climate of this region belongs to the high-cold semiarid climate. The human activities around Qinghai Lake from 1949 to 1987 and the change of the lake level from 1959 to 1987 and the change of the lake level from 1959 to 1987 are discussed in detail in this paper. The water- consumption processes by human activities around the lake are divided into four parts: Livelihood water-consumption (mean annual 868,576m³), Stock-raising water-consumption (10,792,942m³), Agricultural water-consumption (26,696,964m³) and Industrial water consumption (117,421m³). By comparing and analyzing, the artificial water- consumption just takes about 1%–2% of the total consumption in this region. There is no significant correlation between Qinghai Lake level descending and water- consumption by human activities around the lake. The result of this project clearly suggested that the descending of Qinghai Lake level was mainly caused by the climatic change in this region, not by the human activities around the lake.