Effects of historical land cover changes on climate

作     者：SHI ZhengGuo YAN XiaoDong YIN ChongHua WANG ZhaoMin 

作者机构：Key Laboratory of Regional Climate-Environment Research for Temperate East Asia Chinese Academy of Sciences Beijing 100029 China Graduate University of Chinese Academy of Sciences Beijing 100049 China British Antarctic Survey Cambridge CB30ET UK 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2007年第52卷第18期

页      面：2575-2583页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：Supported by the Project of "Aridification over Northern China and Human Adapta-tion" (Grant No. 2006 CB400500) 

主　　题：气候变化 陆地覆盖 森林开伐 气候-生物圈相互作用 

摘      要：In order to explore the influence of anthropogenic land use on the climate system during the last mil- lennium, a set of experiments is performed with an Earth system model of intermediate complexity—— the McGill Paleoclimate Model (MPM-2). The present paper mainly focuses on biogeophysical effects of historical land cover changes. A dynamic scenario of deforestation is described based on changes in cropland fraction (RF99). The model simulates a decrease in global mean annual temperature in the range of 0.09-0.16℃, especially 0.14-0.22℃ in Northern Hemisphere during the last 300 years. The responses of climate system to GHGs concentration changes are also calculated for comparisons. Now, afforestation is becoming an important choice for the enhancement of terrestrial carbon sequestration and adjustment of regional climate. The results indicate that biogeophysical effects of land cover changes cannot be neglected in the assessments of climate change.