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[1]DENG Jianan,ZHANG Jun,LIU Zebin,et al.Spatial Heterogeneity of Soil Saturated Hydraulic Conductivity and Its Influencing Factors on a Larch Plantation Hillslope in Liupan Mountain[J].Research of Soil and Water Conservation,2022,29(05):144-148,163.

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Spatial Heterogeneity of Soil Saturated Hydraulic Conductivity and Its Influencing Factors on a Larch Plantation Hillslope in Liupan Mountain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 144-148,163 Column: Public date: 2022-08-20

Title:: Spatial Heterogeneity of Soil Saturated Hydraulic Conductivity and Its Influencing Factors on a Larch Plantation Hillslope in Liupan Mountain

Author(s):: DENG Jianan^1,2, ZHANG Jun³, LIU Zebin², LIU Fan^1,2, GUO Jianbin¹, MA Shuilian³; (1.College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2.Key Laboratory of Forestry Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; 3.Xixia Forestry Farm of Liupan Mountain Forestry Bureau, Guyuan, Ningxia 756400, China)

Keywords:: Larix principis-rupprechtii hillslope; soil saturated hydraulic conductivity; spatial heterogeneity; influencing factors

CLC:: S152.7

DOI:: -

Abstract:: In order to deeply understand the spatial heterogeneity of soil saturated hydraulic conductivity along the forest hillslope, the classical statistical and geostatistical methods were used to study the spatial heterogeneity of soil saturated hydraulic conductivity in different soil layers on Larix principis-rupprechtii plantation hillslope in Liupan Mountain, and the main factors of its spatial variability were revealed based on correlation analysis. The results showed that with the deepening of the soil layer, the soil saturated hydraulic conductivity gradually increased, and the spatial variability of the soil saturated hydraulic conductivities in different soil layers were different, showing a strong variation in the 40—60 cm soil layer and moderate variation in other layers; the spatial structure of the soil saturated hydraulic conductivity varied in different soil layers, showing strong spatial autocorrelation in 20—40 cm, 40—60 cm, and 60—80 cm soil layers, and medium spatial autocorrelation in 0—20 cm and 80—100 cm soil layers; soil saturated hydraulic conductivity at slope scale was significantly correlated with rock fragment content, non-capillary porosity, capillary capacity, field capacity and capillary porosity. The soil saturated hydraulic conductivity along the studied hillslope has strong spatial variability, and rock fragment content and soil physical properties are the main factors affecting the spatial distribution of soil saturated hydraulic conductivity at slope scale.

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Last Update: 2022-08-20