金强河地区高寒草地气候变化分析

The analyses of climate change of alpine meadow grassland in Jinqianghe, Gansu province

对1980-2000年金强河地区草地气候变化规律研究表明,20年间的年均温呈增长趋势,增幅约为0 0609℃/a;年降水量波动较大,1991-2000年的年均降水量比1980-1990年减少约4 7%,草原湿润度值年均减少0 0008,这种水热变化不致引起高寒草甸草原生境发生本质改变。

Besed on the climate data collected on Jinqianghe Alpine Grassland Experiment station from 1980-2000, the climate change was analysed and result indicated that the annual average temperature increased 0060 9 ℃ , moisture index(K Value) reduced 0000 8 per year It could be concluded that the variation of climate was not the main cause for the degradation of alpine meadow grassland in Jinqianghe area