Advances in Earth Science ›› 2007, Vol. 22 ›› Issue (7): 730-737. doi: 10.11867/j.issn.1001-8166.2007.07.0730

• Articles • Previous Articles     Next Articles

The Response of Water Resource to Climate Change and its Impact on Ecological Environment in Shiyang River Basin

WANG Bao-jian 1,2,SONG Lian-chun 1,3,ZHANG Qiang 1,2,HUANG Yu-xia 1,4,YANG Xuan-xiong 5,HAN Lan-ying 1,2   

  1. 1.Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Change and Disaster Reduction of CMA,Lanzhou Institute of Arid Meteorology, CMA, Lanzhou 730020,China; 2.Lanzhou Regional Climate Center, Lanzhou 730020, China; 3.Department of Forecasting Services and Disaster Mitigation, CMA, Beijing 100081; 4.Lanzhou Central Meteorological Observatory, Lanzhou 730020, China; 5.Gansu Provincial Meteorology bureau,Lanzhou 730020, China
  • Received:2007-04-18 Revised:2007-05-31 Online:2007-07-10 Published:2007-07-10

WANG Bao-jian,SONG Lian-chun,ZHANG Qiang,HUANG Yu-xia,YANG Xuan-xiong,et al. The Response of Water Resource to Climate Change and its Impact on Ecological Environment in Shiyang River Basin[J]. Advances in Earth Science, 2007, 22(7): 730-737.

The annual average temperature of the overall Shiyang river basin has a continuous warming trend for the recent 46 years, with 1994 being significantly warm. Compared with the previous warming, the average temperature increased by 1.0℃, and linear warming rate was 7 times faster. After the warming, annual rainfall was increased by 6.5% (about 16.1mm), runoff from mountain pass was slightly decreased (about 220 million m3), and the water table rapidly lowered. The runoff from mountains pass dropping slightly occurred in the context of decreasing mountain precipitation. Human activities were the main reasons which caused the changing of midstream and downstream utilization volume in the Shiyang river basin. Vegetation monitoring indicates that the area of sand meadow vegetation mainly of sparse vegetation is reducing rapidly and vegetation type is degenerating in the Shiyang River basin, vegetation coverage area and the basin water level were negatively correlated. Based on the climate change and human activities, the ecological environment is worsening in Shiyang river Basin.

No related articles found!
Full text