文献类型： 会议论文

第一作者： Tiejun SUN

作者： Tiejun SUN ¹ ; Baderihu ¹ ;

作者机构： 1.Beijing Research & Development Center of Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences

关键词： Bromus inermis Leyss;Bare slope;Dynamic changes of soil moisture content

会议名称： International Conference on Advances in Energy and Environmental Science

主办单位：

页码： 1627-1631

摘要： Experiment was executed to plant eco-grass of Bromus inermis Leyss on 15°bare slopes, and study effect of biological characters on dynamics of soil moisture contents. The results indicated that vegetation restored quickly on the bare slope after the eco-grass planted. There were 2473.4 kg/hm~2 of overground biomass and 1744.1kg/hm~2 of underground biomass, and 70% of underground biomass was in 0-10cm layer of soil. Meanwhile, there was a regulatory mechanism of soil moisture content for Bromus inermis Leyss. When rainfall was enough, soil moisture content in 0-80 cm layer could reach to the most of 26.83% quickly this year. Next it could decline near to the first value of 19.81% after rainfall stopped, and keep a dynamic balance between 19.48% and 19.96%. Moreover, the regulatory mechanism realized though underground biomass, and was clearer with underground biomass increasing, especially in the 0-40cm layer of soil.

分类号： x37-53