黄土沟坡刺槐林地土壤水分垂直变化的数学模型

doi:10.11707/j.1001-7488.20091002

Scientia Silvae Sinicae ›› 2009, Vol. 12 ›› Issue (10): 9-13.doi: 10.11707/j.1001-7488.20091002

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A Model Used to Describe Vertical Change of Soil Moisture of Robinia pseudoacacia Plantations Growing in the Loess Gully Slope

Zhao Zhong¹,Li Jian^1,3,Yuan Zhifa²,Hu Xiaoning²,Cao Yang¹,Wang Dihai¹

1. Key Laboratory of Environment and Ecology in Western China，Northwest A & F University Yangling 712100;2. College of Science, Northwest A & F University Yangling 712100; 3.Institute of Sand-Control of Shaanxi Yulin 719000

Received:2008-08-12 Revised:1900-01-01 Online:2009-10-25 Published:2009-10-25
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Abstract

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^k₁h)+WC₀, if a>0, c>0, k₁>k>0. k₁ 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.

Key words: the Loess Plateau, Robinia pseudoacacia, soil moisture, model

CLC Number:

Zhao Zhong;Li Jian;Yuan Zhifa;Hu Xiaoning;Cao Yang;Wang Dihai. A Model Used to Describe Vertical Change of Soil Moisture of Robinia pseudoacacia Plantations Growing in the Loess Gully Slope[J]. Scientia Silvae Sinicae, 2009, 12(10): 9-13.

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A Model Used to Describe Vertical Change of Soil Moisture of Robinia pseudoacacia Plantations Growing in the Loess Gully Slope

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