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[1]SHI Zhongyu,LI Jie.Characteristics of Water Conservation Functions of Soils in Different Forest Types in Changbai Mountains[J].Research of Soil and Water Conservation,2019,26(06):158-164.

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Characteristics of Water Conservation Functions of Soils in Different Forest Types in Changbai Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 06 Page number: 158-164 Column: Public date: 2019-10-17

Title:: Characteristics of Water Conservation Functions of Soils in Different Forest Types in Changbai Mountains

Author(s):: SHI Zhongyu¹, LI Jie^1,2; 1. School of Landscape Architecture, Shangqiu University, Shangqiu, Henan 476000, China;
2. Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083, China

Keywords:: Changbaishan Mountain; mixed forest; coniferous forest; broad-leaved forest; soil characteristics; water conservation functions

CLC:: S714.7;S715.2

DOI:: -

Abstract:: Soil characteristics, soil water storage capacity and soil infiltration capacity of three main forest types (coniferous forest, coniferous and broad-leaved forest, broad-leaved forest) were studied for three consecutive years in Changbaishan Mountain. The results showed that:(1) soil density of different forest types increased gradually with the increase of soil depth, and the soil density of the same soil layer basically decreased in the order:mixed coniferous and broad-leaved forest > and coniferous forest > broad-leaved forest; the total porosity and capillary porosity of soil in different forest types decreased gradually with the increase of soil depth; however, the capillary porosity of the same soil layer increased in the order:coniferous and broad-leaved mixed forest < coniferous forest < broad-leaved forest; (2) soil total porosity and soil depth were best fitted by exponential function equation, the relation between soil depth and total porosity was best fitted by logarithmic function equation, among which had the highest correlation coefficient in coniferous and broad-leaved mixed forest; (3) natural water content, soil, air permeability, saturation storage capacity, maximum water holding capacity, effective water holding capacity, capillary water and capillary water of all layers in soil profile decreased with the increase of soil depth, soil natural water content, soil, air permeability, saturation storage capacity, maximum water holding capacity, effective water holding capacity, capillary water and capillary water the same layer decreased in the order:mixed forest > coniferous forest > needle broad-leaved forest; (4) the steady infiltration rate and permeability coefficient (K₁ and K₁₀) of soil in different forest types gradually increased with the increase of soil depth, and the permeability coefficient of the same soil layer decreased in the order:mixed forest > coniferous forest > needle broad-leaved forest; (5) the correlation analysis showed that soil permeability had a significantly positive correlation with total porosity and non-capillary porosity (p<0.01), and a significantly negative correlation with capillary porosity (p<0.01), among which non-capillary porosity had a more significant impact on soil permeability. The water conservation functions of different forest types in Changbaishan Mountain was quantitatively evaluated by analytic hierarchy process. The results showed that the comprehensive capacities of different forest types ranged from 0.714 to 0.956, and decreased in the order:mixed forest > coniferous forest > needle broad-leaved forest.

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