基于植物根系仿生的土壤热湿迁移数值模拟  

SIMULATION OF HEAT AND MOISTURE MIGRATION IN SOIL WITH THE BIOLOGICAL MODELLING OF PLANT ROOT GROWTH

作　　者：刘炳成[1] 刘伟[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《工程热物理学报》2004年第S1期115-118,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划项目资助(No.G2000026303);国家自然科学基金项目资助(No.59976010);教育部博士点基金项目资助(No.2000048731)

摘　　要：以实验数据为依据,把土壤中的水分含量和水分梯度分布作为影响植物根系生长的环境因子,结合非饱和多孔介质中传热传质的数学模型,对冬小麦的根系生长进行仿生模拟,分析根系吸水对非饱和土壤湿分与热量传递的影响。在相同环境条件下,对裸土和有作物覆盖的土壤床中的热、湿迁移也进行了模拟比较。Basing on measured data, a biological modeling of wheat root growth was processed with the evolution idea whilst water content and moisture gradient were defined as the dominating environment factors in plant root growing. The effect of root system water absorption on the heat and moisture migration in unsaturated soil was analyzed. Under same environmental condition, the comparisons of temperature and moisture distribution in soil between vegetation soil-bed and bare soil-bed were also conducted.

关 键 词：根系 仿生 水分梯度 热湿迁移 

分 类 号：S15[农业科学—土壤学]