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[1]ZHANG Yi,LIN Yiyan,ZHANG Jieming,et al.Hydrological Function of Litter and Soil Layer of Typical Vegetation in Beijing Mountainous Area[J].Research of Soil and Water Conservation,2023,30(04):160-168.[doi:10.13869/j.cnki.rswc.2023.04.054.]

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Hydrological Function of Litter and Soil Layer of Typical Vegetation in Beijing Mountainous Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 04 Page number: 160-168 Column: Public date: 2023-06-10

Title:: Hydrological Function of Litter and Soil Layer of Typical Vegetation in Beijing Mountainous Area

Author(s):: ZHANG Yi^1,2,3, LIN Yiyan⁴, ZHANG Jieming⁵, JIA Guodong^1,2,3, FAN Dengxing^1,2,3, YU Xinxiao^1,2,3; (1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2.Key Laboratory of State Forestry and Grassland Administration on Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 3.Metropolitan Area Field Scientific Observation Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 4.College of Horticulture and Forestry, Fujian Vocational College of Agriculture, Fuzhou......)

Keywords:: soil and water conservation; hydrological function; Beijing mountainous area; litter; soil layer

CLC:: S718.5

DOI:: 10.13869/j.cnki.rswc.2023.04.054.

Abstract:: [Objective] The water conservation capacity of different vegetation in Beijing mountainous area can be clarified through studying the hydrological function of litter and soil layer, which can provide reference for local vegetation construction. [Methods] The hydrological functions of litters and soil layers of different vegetation types in the Mountains of Beijing were quantitatively analyzed by the methods of indoor immersion, circumferential knife cutting and water head fixing. The relationship between organic carbon and hydrological function of soil layer was clarified by correlation analysis. [Results](1)The maximum water holding rate, maximum retention rate and effective retention rate of litter decreased in the order: the mixed forest of Platycladus orientalis×shrub>the pure forest of Acer elegantulum>the mixed forest of Acer elegantulum×Platycladus orientalis>the pure forest of Platycladus orientalis. The maximum water holding capacity, the maximum holding capacity and the effective holding capacity of litter decreased in the order: the pure forest of Acer elegantulum>the mixed forest of Platycladus orientalis×Shrub>the mixed forest of Acer elegantulum×Platycladus orientalis>the pure forest of Platycladus orientalis, and these parameters of semi-decomposed layers were greater than those of the undecomposed layers.(2)The order of soil saturated water holding capacity and capillary water holding capacity were the pure forest of Platycladus orientalis>the pure forest of Acer elegantulum>the mixed forest of Platycladus orientalis×Shrub>the mixed forest of Acer elegantulum×Platycladus orientalis. The order of non-capillary water holding capacity of different vegetation type were the mixed forest of Acer elegantulum×Platycladus orientalis>the pure forest of Acer elegantulum>the mixed forest of Platycladus orientalis×Shrub>the pure forest of Platycladus orientalis. The soil saturated hydraulic conductivity decreased gradually along the profile, and the maximum value of average saturated hydraulic conductivity was observed in the mixed forest of Platycladus orientalis×shrub.(3)Soil organic carbon content decreased gradually along the profile, and was significantly correlated with bulk density, total porosity, non-capillary porosity and saturated hydraulic conductivity(p<0.05). [Conclusion] The water holding capacity of soil layer of pure forest was better than mixed forest on the whole, and exceeded that of litter. The soil water storage capacity of mixed forest was better than pure forest. Organic carbon can significantly affect soil physical properties and water conductivity, which is of positive significance for improving soil hydrological function.

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Last Update: 2023-06-10