[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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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:
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Soil Permeability Capability of Subalpine Coniferous Forests in Western Sichuan, China
- Author(s):
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HUO Xiao-peng, LI Xian-wei, ZHANG Jian, FAN Chuan, DAI Jie, ZHANG Xing-hua, ZHANG Liang-hui
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Provincial Key Laboratory of Ecological Forestry Engineering, Sichuan Agricultural University, Ya’an, Sichuan 625014, China
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- Keywords:
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subalpine coniferous forests; soil permeability; water storage capacity; permeability model
- CLC:
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S715.3
- DOI:
-
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- Abstract:
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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.