%0 Journal Article
%T Seasonal differences of energy fluxes among crop and grass ecosystems in semiarid region of southern Ningxia<br>宁南半干旱地区农田和草地生态系统能量通量的季节变化
%A ZHANG Xiao-Yu
%A WANG Lian-Xi
%A YUAN Hai-Yan
%A <br>张晓煜
%A 王连喜
%A 袁海燕
%J 生态学报
%D 2005
%I 
%X Human activities have dramatically influenced terrestrial ecosystems through altering the surface energy balance in the atmosphere-land interactions. Understanding the surface energy balance in various vegetation surfaces and ecosystems is essential for evaluating the impacts of management activities on the succession of natural and anthropogenic ecosystems. In the semiarid region in Southern Ningxia of China, expanding agricultural and overgrazing grasslands has resulted in degradation of natural grass eco...
%K heat flux
%K latent flux
%K soil heat flux
%K crop-to-grassland conversion
%K energy balance method
%K grassland
%K cropland<br>感热
%K 潜热
%K 土壤热通量
%K 退耕还草
%K 能量平衡法
%K 草地
%K 农田
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=278DD72098874884&yid=2DD7160C83D0ACED&vid=C5154311167311FE&iid=9CF7A0430CBB2DFD&sid=A463D9AC41121DD1&eid=D9E727AAB71FE4BA&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=23