Short-term climatic impacts of afforestation in the East Asian monsoon region  

作　　者：MA Di LIU ZhengYu Lü ShiHua MICHAEL Notaro RONG XinYao CHENG GuangShan WANG FuYao 

机构地区：[1]Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences [2]Graduate School of Chinese Academy of Sciences [3]University of Wisconsin [4]Laboratory Climate,Ocean and Atmosphere Studies,Perking University [5]Chinese Academy of Meteorological Sciences

出　　处：《Chinese Science Bulletin》2013年第18期2073-2081,共9页

基　　金：supported by the Major Research Program for Global Change Study (2010CB950503 and2012CB955201);the National Basic Research Program of China (2009CB421402 and 2013CB956004)

摘　　要：The influence of changes in vegetation cover on short-term climate over the East Asian monsoon region is simulated using the Community Climate System Model Version 3.5.The results show the annual mean surface air temperature significantly decreases by 0.93°C in response to afforestation over the East Asian monsoon region.Also,surface air temperature decreases by 1.46 and 0.40°C in summer and winter,respectively.The cooling is caused by enhanced evapotranspiration(ET) produced by increased forest cover.Evapotranspiration is greater in summer than in winter,so summer cooling is greater than winter cooling.The annual mean precipitation increases in response to afforestation,with a maximum of 7% in April.Water vapor increases significantly because of greater latent heat flux release.Meanwhile,afforestation leads to higher surface roughness,which decreases surface wind speed and induces an ascending air motion.These factors can produce more clouds and precipitation.Moreover,the surface albedo and the reflective solar radiation are reduced in response to afforestation.The influence of changes in vegetation cover on short-term climate over the East Asian monsoon region is simulated using the Community Climate System Model Version 3.5. The results show the annual mean surface air temperature significantly decreases by 0.93℃ in response to afforestation over the East Asian monsoon region. Also, surface air temperature decreases by 1.46 and 0.40℃ in summer and winter, respectively. The cooling is caused by enhanced evapotranspiration （ET） produced by increased forest cover. Evapotranspiration is greater in summer than in winter, so summer cooling is greater than winter cooling. The annual mean precipitation increases in response to afforestation, with a maximum of 7% in April. Water vapor increases significantly because of greater latent heat flux release. Meanwhile, afforestation leads to higher surface roughness, which decreases surface wind speed and induces an ascending air motion. These factors can produce more clouds and precipitation. Moreover, the surface albedo and the reflective solar radiation are reduced in response to afforestation.

关 键 词：东亚季风区 短期气候 造林 气候影响 年平均降水量 地表反照率 表面粗糙度 空气温度 

分 类 号：S716[农业科学—林学]