Effects of vegetation restoration on local microclimate on the Loess Plateau

作     者：WANG Chenxi LIANG Wei YAN Jianwu JIN Zhao ZHANG Weibin LI Xiaofei 王晨茜;梁伟菲;严建武;金朝;张为彬;李晓

作者机构：School of GeographySouth China Normal UniversityGuangzhou 510631China School of Geography and TourismShaanxi Normal UniversityXi’an 710119China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A&F UniversityYangling 712100ShaanxiChina 

出 版 物：《Journal of Geographical Sciences》 (地理学报（英文版）)

年 卷 期：2022年第32卷第2期

页      面：291-316页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0705[理学-地理学] 0706[理学-大气科学] 

基　　金：National Natural Science Foundation of China,No.41771118,No.42071144 The Fundamental Research Funds for the Central Universities,No.GK202003060 

主　　题：vegetation restoration evapotranspiration cooling and humidifying effect microclimate regulation 

摘      要：With the implementation of the Grain for Green Project,vegetation cover has experienced great changes throughout the Loess Plateau(LP).These changes substantially influence the intensity of evapotranspiration(ET),thereby regulating the local *** this study,we estimated ET based on the Penman-Monteith(PM)method and Priestley-Taylor Jet Propulsion Laboratory(PT-JPL)model and quantitatively estimated the mass of water vapor and heat absorption on the *** analyzed the regulatory effect of vegetation restoration on local microclimate from 2000 to 2015 and found the following:(1)Both the leaf area index(LAI)value and actual ET increased significantly across the region during the study period,and there was a significant positive correlation between them in spatial patterns and temporal trends.(2)Vegetation regulated the local microclimate through ET,which increased the absolute humidity by 2.76-3.29 g m^(-3),increased the relative humidity by 15.43%-19.31%and reduced the temperature by 5.38-6.43℃per day from June to September.(3)The cooling and humidifying effects of vegetation were also affected by the temperature on the LP.(4)Correlation analysis showed that LAI was significantly correlated with temperature at the monthly scale,and the response of vegetation growth to temperature had no time-lag *** paper presents new insights into quantitatively assessing the regulatory effect of vegetation on the local microclimate through ET and helps to objectively evaluate the ecological effects of the Grain for Green Project on the LP.