安徽农业科学2011，Vol.39Issue(25)：15582-15583,15607,3.
毛乌素沙地不同地貌下沙柳根系分布特征研究
Distribution Characteristics Comparison of Salix psammophila Roots under Different Landforms in Mu Us Desert
摘要
Abstract
[Objective] In order to study plant adaptation mechanism under different landforms in drought regions. [ Method ] Observe soil moisture dynamic of Salix psammophila sample areas on the dune and depression with neutron moisture gauge and research the roots distribution of Salix psammophila sample areas on the dune and depression respectively by digging method. [ Result ] The quantity of Salix psammophi-la roots on the dune exponentially decreases while that on the depression decreases by power function in horizontal direction. In vertical direction , Salix psammophila roots on the dune are mainly distributed in 0 - 30 cm and 80-120 cm layers as 72% of all, while Salix psammophila roots on the depression are mainly distributed in 0 -40 cm layers as 54% of all. [Conclusion] Salix psammophUa roots on the dune not only use surface soil water but also use middle-layer groundwater. Salix psammophila roots on the depression primarily use surface soil water.关键词
毛乌素沙地/挖掘法/土壤水分/根系分布Key words
Mu Us Desert/Digging method/Soil moisture/Roots distribution分类
资源环境引用本文复制引用
杨峰,刘立,王文科,赵贵章,段鹏..毛乌素沙地不同地貌下沙柳根系分布特征研究[J].安徽农业科学,2011,39(25):15582-15583,15607,3.基金项目
教育部科学技术研究重大项目(308021) （308021）
国土资源部公益性行业科研项目(200911004). （200911004）
