西北地区气候变化新动态及对干旱环境的影响——总体暖干化,局部出现暖湿迹象  

New Development of Climate Change in Northwest China and Its Impact on Arid Environment

作　　者：张强[1] 张存杰[2] 白虎志[1] 李林[3] 孙兰东[2] 刘德祥[2] 王劲松[1] 赵红岩[2] 

机构地区：[1]中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [2]西北区域气候中心,甘肃兰州730020 [3]青海省气象局气候中心,青海西宁810001

出　　处：《干旱气象》2010年第1期1-7,共7页Journal of Arid Meteorology

基　　金：公益性行业(气象)科研专项"西北地区旱作农业对气候变暖的响应特征和应对技术研究"(GYHY200806021);中国气象局气候变化专项"西北极端干旱事件个例库及干旱监测指标数据集"共同资助

摘　　要：近50 a来,西北地区气温呈显著的上升趋势,降水变化空间差异突出,西北地区整体暖干化趋势明显,局部出现暖湿现象。气候变暖使冰川退缩,雪线上升,冻土消融,湿地退化,湖泊萎缩,河流流量减少,水资源越来越短缺,出现生态环境恶化问题。根据IPCC预测结果分析,未来西北地区气候变暖趋势会更加明显。从保护西北地区生态环境、完善气候变化综合监测系统以及开展重点区域气候变化过程专项研究等方面提出了对策建议。Over the past 50 years, temperature in the Northwest China presented a significant rising trend, while precipitation change was different in different place. Warming and drying trend is evident in the whole Northwest China, but the local appears warming and wetting phenomenon. With the global warming, glaciers retreat and snow line rises, permafrost melts, wetlands degradation, lakes shrink, river flows decrease, water resource becomes scarcer, and eco -environmental degradation. According to IPCC forecast re- sults, the climate warming trend in this region in the future will be more pronounced. The countermeasures to protect the ecological environment, improve the comprehensive climate change monitoring system, launch specific research on the key regional climate change processes, and other suggestions were put forward.

关 键 词：西北地区 气候变化 暖干 暖湿 对策建议 

分 类 号：P461[天文地球—大气科学及气象学]