Soil Hydrological Properties of Typical Vegetation in Liupan Mountains

XU Li-hong; WANG Yan-hui; XIONG Wei; YU Peng-tao

Based on soil hydro-physical properties, water holding capacity and infiltration, the water holding capacity and infiltration of typical vegetations were analyzed on the south slope of Liupan Mountains in Ningxia Hui Autonomous Region. The results indicated that the maximum water storage capacity ranged from 486.5 mm to 604.8 mm and the effective storage capacity ranged from 61.0 mm to 292.1mm. The effective storage capacity of 0~100 cm soil layer was affected by the volumetric content of rock fragments. The initial infiltration rate of soil surface (0~10 cm) ranged from 4.00 mm·min-1 to 24.99 mm·min-1 and the steady infiltration rate ranged from 1.18 mm·min-1 to 15.17 mm·min-1. Simulations of the soil water infiltration using the Kostiakov equation, Horton equation and Philip equation showed the result using the Horton equation was the best. It also showed that the soil non-capillary porosity played a key role on the soil water infiltration and the volumetric content of rock fragments might affect the soil water infiltration through affecting the content of soil non-capillary porosity.

1. Key Laboratory of Forest Ecological Environment of State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China

Received Date: 2011-07-25

Available Online: 2012-08-20

Abstract: Based on soil hydro-physical properties, water holding capacity and infiltration, the water holding capacity and infiltration of typical vegetations were analyzed on the south slope of Liupan Mountains in Ningxia Hui Autonomous Region. The results indicated that the maximum water storage capacity ranged from 486.5 mm to 604.8 mm and the effective storage capacity ranged from 61.0 mm to 292.1mm. The effective storage capacity of 0~100 cm soil layer was affected by the volumetric content of rock fragments. The initial infiltration rate of soil surface (0~10 cm) ranged from 4.00 mm·min-1 to 24.99 mm·min-1 and the steady infiltration rate ranged from 1.18 mm·min-1 to 15.17 mm·min-1. Simulations of the soil water infiltration using the Kostiakov equation, Horton equation and Philip equation showed the result using the Horton equation was the best. It also showed that the soil non-capillary porosity played a key role on the soil water infiltration and the volumetric content of rock fragments might affect the soil water infiltration through affecting the content of soil non-capillary porosity.

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Reference (19)

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Soil Hydrological Properties of Typical Vegetation in Liupan Mountains

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