气象学报（英文版）2021，Vol.35Issue(1)：1-33,33.
西北干旱区气候暖湿化的进程和多尺度特征及其对生态植被的影响
Climatic Warming and Humidification in the Arid Region of Northwest China:Multi-Scale Characteristics and Impacts on Ecological Vegetation
摘要
Abstract
The climatic warming and humidification observed in the arid region of Northwest China(ARNC)and their im-pacts on the ecological environment have become an issue of concern.The associated multi-scale characteristics and environmental responses are currently poorly understood.Using data from satellite remote sensing,field observa-tions,and the Coupled Model Intercomparison Project phase 6,this paper systematically analyzes the process and scale characteristics of the climatic warming and humidification in the ARNC and their impacts on ecological vegeta-tion.The results show that not only have temperature and precipitation increased significantly in the ARNC over the past 60 years,but the increasing trend of precipitation is also obviously intensifying.The dryness index,which com-prehensively considers the effects of precipitation and temperature,has clearly decreased,and the trend in humidific-ation has increased.Spatially,the trend of temperature increase has occurred over the entire region,while 93.4％of the region has experienced an increase in precipitation,suggesting a spatially consistent climatic warming and humid-ification throughout the ARNC.Long-term trends and interannual changes in temperature and precipitation dominate the changes in climatic warming and humidification.Compared to interannual variations in temperature,the trend change of temperature contributes more to the overall temperature change.However,the contribution of interannual variations in precipitation is greater than that of the precipitation trend to the overall precipitation change.The cur-rent climatic warming and humidification generally promote the growth of ecological vegetation.Since the 1980s,82.4％of the regional vegetation has thrived.The vegetation index has a significant positive correlation with precipit-ation and temperature.However,it responds more significantly to interannual precipitation variation,although the ve-getation response varies significantly under different types of land use.The warming and humidification of the cli-mate in the ARNC are probably related to intensifications of the westerly wind circulation and ascending air motions.They are expected to continue in the future,although the strength of the changes will probably be insufficient to sig-nificantly change the basic climate pattern in the ARNC.The results of this study provide helpful information for de-cision making related to China's"Belt and Road"development strategies.关键词
西北干旱区/暖湿化趋势/生态植被/多尺度/协同影响Key words
arid region of Northwest China(ARNC)/climatic warming and humidification/ecological vegetation/multi-scale/synergistic effect引用本文复制引用
张强,杨金虎,王玮,马鹏里,卢国阳,刘晓云,于海鹏,方锋..西北干旱区气候暖湿化的进程和多尺度特征及其对生态植被的影响[J].气象学报（英文版）,2021,35(1):1-33,33.基金项目
Supported by the National Natural Science Foundation of China(41630426 and 41975016)and Climate Change Special Project of the China Meteorological Administration(CCSF201913 and CCSF202010). 资助项目:国家自然科学基金(41630426、41975016)和中国气象局气候变化专项(CCSF201913、CCSF202010)资助. （41630426 and 41975016）
