%0 Journal Article
%T A COUPLING MODEL OF WATER-HEAT MOVEMENT IN THE SOIL OF SAND-FIXATION AREA<br>植物固沙区土壤水热运移耦合模型研究
%A Jiachun Li
%A <br>姚德良
%A 李家春
%A 沈卫明
%J 力学学报
%D 1996
%I 
%X Based on the Phillips & Vriès' theory, we have suggested a coupling model for simulating water-heat movement in the sand soil with vegetation. The effects of temperature and vegetation roots on the exchange of water and heat between atmosphere and land are firstly analyzed. Then, we have provided the formulae to estimate soil evaporation, canopy transpiration, water-absorbing rate of root system and heat flux in soil. A Crank-Nicolson difference scheme is constructed to solve nonlinear diffusion equation to...
%K sand-fixation region
%K water and heat exchange
%K coupling model<br>植物固沙区
%K 水热运移
%K 耦合模型
%K 沙区
%K 土壤
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=A19AAE9267BC9EBAB2F0A99EEFA5A36E&yid=8A15F8B0AA0E5323&vid=D3E34374A0D77D7F&iid=94C357A881DFC066&sid=F9A6B6F259CE5121&eid=68FF5306A8F9C315&journal_id=0459-1879&journal_name=力学学报&referenced_num=0&reference_num=6