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[1]ZHANG Luodan,ZHANG Yu,HUANG Mingbin,et al.Simulations of Soil Water Balance in Two Arbor Forests Grown in Gully Region of the Loess Plateau[J].Research of Soil and Water Conservation,2015,22(02):26-31.

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Simulations of Soil Water Balance in Two Arbor Forests Grown in Gully Region of the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 02 Page number: 26-31 Column: Public date: 2015-04-28

Title:: Simulations of Soil Water Balance in Two Arbor Forests Grown in Gully Region of the Loess Plateau

Author(s):: ZHANG Luodan^1,2, ZHANG Yu^1,2, HUANG Mingbin², ZHU Yuanjun²; 1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: Hydrus-1 D; Platyclatus orientalis; Robinia pseudoacacia; soil water; water balance

CLC:: S152.7

DOI:: -

Abstract:: In order to investigate the differences in water consumption of two arbor forests grown in the gully region of the Loess Plateau, Hydrus-1 D model coupling the long-term experimental data was used to simulate the dynamics of soil water and soil water balance components in the sites grown Platyclatus orientalis and Robinia pseudoacacia. With the calibrated and validated hydraulic parameters, the Hydrus-1 D could be used to simulate soil water dynamics in two arbor forests. The root mean square errores between the simulated and measured water contents ranged from 0.018 cm³/cm³ to 0.029 cm³/cm³, while the mean absolute relative errores varied from 9.8% to 12.5%. The components of soil water balance were impacted by climatic conditions and tree species. Evapotranspiration was the largest one among all components of soil water balance, which varied from 83.4% to 108.4% of total precipitation for Platyclatus oriental, and from 75.9% to 96.2% of total precipitation for Robinia pseudoacacia. With regard to the two trees, Robinia pseudoacacia had the larger soil water storage than Platyclatus orientalis during the study period from 2011 to 2013.

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