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[1]WANG Dong,YANG Zheng,HAO Hongmin,et al.Hydrological Processes of Litter-Soil Interfacial Systems in Restoration Grasslands of the Loess Plateau，China[J].Research of Soil and Water Conservation,2015,22(01):80-84.

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Hydrological Processes of Litter-Soil Interfacial Systems in Restoration Grasslands of the Loess Plateau，China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 01 Page number: 80-84 Column: Public date: 2015-02-28

Title:: Hydrological Processes of Litter-Soil Interfacial Systems in Restoration Grasslands of the Loess Plateau，China

Author(s):: WANG Dong^1,2, YANG Zheng^1,2, HAO Hongmin^1,2, WU Gaolin^1,2, ZHU Yuanjun^1,2, SHI Zhihua^1,2; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Con

Keywords:: Loess Plateau; conversion of cropland to natural grassland; litter; evaporation; water holding capacity

CLC:: S152.7

DOI:: -

Abstract:: Simulating rainfall experiments were conducted to study the effects of litter layer on moisture evaporation and water storage capacity of the litter-soil interfacial systems. In this experiment, four treatments were designed, litter layers of grassland naturally restored for 5,15,and 30 years were mulched on the surface soil and bare surface soil was taken as contrast. The results showed that the litter layer treatments not only delayed the runoff emergence, but also increased the water-hold quantity significantly. The relationship between the litter mass and litter storage water can be described by the linear function. The results indicated that the litter layers can efficiently inhibit soil moisture evaporation, especially at the high level of litter-soil interfacial systems water content during the successive evaporation of 24 hours. After the 72 hours, the soil water content of the surface soil increased significantly with the increase of restoration years, while the proportion of cumulative evaporation of the rain-hold quality decreased. In the semi-arid loess plateau region, the litter layer of the restoration grassland could improve the water holding capacity of the surface soil and increase the soil water content.

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