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[1]HUO Xiao-peng,LI Xian-wei,ZHANG Jian,et al.Soil Permeability Capability of Subalpine Coniferous Forests in Western Sichuan, China[J].Research of Soil and Water Conservation,2009,16(03):192-195.

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Soil Permeability Capability of Subalpine Coniferous Forests in Western Sichuan, China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 03 Page number: 192-195 Column: Public date: 2009-06-20

Title:: Soil Permeability Capability of Subalpine Coniferous Forests in Western Sichuan, China

Author(s):: HUO Xiao-peng, LI Xian-wei, ZHANG Jian, FAN Chuan, DAI Jie, ZHANG Xing-hua, ZHANG Liang-hui; Provincial Key Laboratory of Ecological Forestry Engineering, Sichuan Agricultural University, Ya’an, Sichuan 625014, China

Keywords:: subalpine coniferous forests; soil permeability; water storage capacity; permeability model

CLC:: S715.3

DOI:: -

Abstract:: The study on soil permeability of subalpine coniferous forests was carried out in western Sichuan, China. The results showed that:(1)In 0-30 cm soil layer, the non-capillary water capacity(NCWC) is affected strongly by soil bulk density, porosity and age of forests. The NCWC in natural forests ranged 593.7~694.2 t/hm², and capacity sequence is 185 years> 80 years > 40 years old. The NCWC ranged 175.8~545.1 t/hm² in plantation forests, and the sequence is 40 years > 30 years > 25 years > 20 years old spruce.(2)The soil initial permeability rates of natural forests varied 10.6~30.1 mm/min, the highest one is 185 years old forests of fir; steady-state permeability rates ranged 3.3~6.4 mm/min, the highest one is 185 years old forests of fir. The IPR and SPR in plantation forests changed 2.7~8.3 mm/min and 1.9~5.4 mm/min respectively and the highest velocity of both is 40 years old forests of spruce.(3)Constructing soil permeability regression model and its fitting degree is 0.869~0.959, which shows that equation analog could reflect the process of each plots in this research.

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