全球气候变化下新疆湿地变化特征的初步分析——以博斯腾湖为例

UNDER GLOBAL CLIMATE CHANGE IN XINJIANG WETLAND CHANGES PRELIMINARY ANALYSIS——A CASE STUDY BOSTEN LAKE

在全球气候变暖的大背景下,中国西北地区呈现出了由暖干向暖湿转型的变化特征,且新疆是显著转型区,温度上升,降水量、冰川消融量和径流量连续多年增加,湖泊水位显著上升。博斯腾湖水质的变化,水位的变化以及湿地芦苇资源的变化都直接或间接的受全球或区域气候的影响。总体来说,博斯腾湖环境变化受自然和人为两种因素制约。但这两种因素对水位变化的影响力在不同时期是有差异的。20世纪70年代以前人为活动对湖水位变化的影响力略大于自然因素对湖水位变化的影响力,在80年代以后湖水位变化主要受自然因素影响。总体来说,湖水位变化以自然因素影响为主,但人为活动加剧了湖水位的变化。

In the background of global climate warming,China＇s northwest region showing the changes of the transition from warm dry to warm wet,and Xinjiang is a significant transformation of the wet zone,the temperature rise,precipitation,glacier melt and runoff increase for many years,lake water level increased significantly.Bosten Lake water quality changes,water level changes and reed resources changes are directly or indirectly affected by global or regional climate.Overall,the Bosten Lake by natural and man-made climate change are two of factors.But neither of these factors on the impact of water level in different periods is different.70s before the change of human activities on the lake slightly larger than the influence of natural factors on the impact of changes in water level.80s after the change is mainly affected by natural factors.Overall,the water level change is the main natural factors,but exacerbated by human activities.