林业科学2009，Vol.45Issue(10)：9-13,5.
黄土沟坡刺槐林地土壤水分垂直变化的数学模型
A Model Used to Describe Vertical Change of Soil Moisture of Robinia pseudoacacia Plantations Growing in the Loess Gully Slope
摘要
Abstract
Soil moisture plays an important role for forestry in the Loess Plateau. Using neutron probe, the vertical changes of soil moisture of Robinia pseudoacacia plantations grown in the semi-humid region were measured during April to October in 2004 and 2005. A compartment model and the data of the soil moisture measured in 2004 were used to set up a balance model with absorption chamber of rainfall infiltration into the soil: WC = a(e-~(kh)-1) + c(1-e~(k,h)) + WC_0 ,if a >0, c >0, k_1>k>0. k_1 and k is the soil absorption rate and loss rate of rain water into soil the parameters under specific conditions reveal the different ecological environment of soil moisture of Robinia pseudoacacia plantations grown in the Loess Plateau. The model was tested and verified by using the survey data in May 2005. The result showed that the goodness of fit answered for need of statistics, and the model was able to well reflect the characters of vertical changes of the soil moisture.关键词
黄土高原/刺槐/土壤水分/模型Key words
the Loess Plateau/ Robinia pseudoacacia /soil moisture/model分类
农业科技引用本文复制引用
赵忠,李剑,袁志发,胡小宁,曹扬,王迪海..黄土沟坡刺槐林地土壤水分垂直变化的数学模型[J].林业科学,2009,45(10):9-13,5.基金项目
国家自然科学基金(30671673). （30671673）
