吉林省LUCC对地表能量分配的影响  

The effects of LUCC on surface energy partitioning in Jilin province

作　　者：刘凤山[1] 张贺[2,3] 柏会子[2,3] 肖登攀 陶福禄[2] 

机构地区：[1]福建农林大学菌草研究所,福州350002 [2]中国科学院地理科学与资源研究所,北京100101 [3]中国科学院研究生院,北京100049 [4]河北省地理科学研究所,石家庄050011

出　　处：《干旱区资源与环境》2016年第5期113-117,共5页Journal of Arid Land Resources and Environment

基　　金：福建省自然科学基金(2015J01153);国家"973"计划项目(编号:2010CB950900)资助

摘　　要：地表能量分配是土地利用/覆被变化(LUCC)调控气候的关键过程。以吉林省1990年、2000年、2005年和2010年四期土地覆被数据为基础,利用Si B2分析过去20年LUCC对地表能量分配的影响。结果表明:1)地表能量分配各分量与土地利用类型有良好的空间对应关系,森林获得的净辐射、显热和潜热较多,农田和草地的净辐射、显热和潜热通量较小;2)LUCC过程中,叶面积指数是净辐射的重要影响因素,冠层导度主要调节潜热分配;3)吉林省土地利用变化以"森林和草地转换为农田"过程为主,造成年均净辐射降低了0.22W m^(-2),潜热增加了0.56W m^(-2),显热减小了0.83W m^(-2),且均存在季节变化特征。The surface energy partitioning is the key process of land use / cover change（ LUCC） to regulating the climate. The Simple Biosphere model（ version 2） was used to analyze the LUCC effects on surface energy partitioning in the past two decades,based on 1990,2000,2005,and 2010 land use / cover databases in Jilin province. Results showed that： 1） good spatial correspondence was existed between the components of surface energy partitioning and land use types： forest obtained more net radiation,sensible heat and latent heat,farmland and grassland captured less net radiation,sensible heat and latent heat. 2） In the LUCC process,the leaf area index had important effect on net radiation; canopy conductance was the main influence factor for latent heat distribution. 3） The dominant process of past land use change in Jilin province was ＂ forest and grassland into farmland＂,which causing the annual average net radiation decreased by 0. 22 Wm^-2,latent heat increased by 0.56 Wm^-2,and sensible heat reduced by 0. 83 Wm^-2. And there were seasonal variation characteristics in them.

关 键 词：地表能量分配 潜热 LUCC 农田开垦 吉林省 

分 类 号：F301[经济管理—产业经济]