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[1]CHEN Yonghua,YE Quanping,ZHANG Wenhui,et al.Soil Permeability Characteristics of Quercus acutissima Forest under Different Thinning Intensities in Qiaoshan Mountains[J].Research of Soil and Water Conservation,2019,26(01):113-117.

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Soil Permeability Characteristics of Quercus acutissima Forest under Different Thinning Intensities in Qiaoshan Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 01 Page number: 113-117 Column: Public date: 2019-02-28

Title:: Soil Permeability Characteristics of Quercus acutissima Forest under Different Thinning Intensities in Qiaoshan Mountains

Author(s):: CHEN Yonghua¹, YE Quanping², ZHANG Wenhui², LIU Xiaojun³; 1. Huanglongshan Forestry Bureau of Yan’an, Shaanxi Province, Huanglong, Shaanxi 715700, China;
2. Key Comprehensive Laboratory of Forestry in Shaanxi Province, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Qiaoshan Forestry Bureau of Yan’an, Shaanxi Province, Huangling, Shaanxi 727300, China

Keywords:: soil permeability characteristics; Quercus acutissima forest; thinning intensity; root length density

CLC:: S714.7

DOI:: -

Abstract:: In order to investigate the law and influencing factors of the soil permeability in Quercus acutissima forest under different tending thinning intensities, we took the Q.acutissima natural secondary forests in Qiaoshan forests as the study site. The analyses were made on soil permeability, soil basic physical properties and plant roots of the near natural management tending Q.acutissima forest after 5 years of thinning under different tending thinning intensities (CK, 10%, 20%, 30%). The results showed that the soil permeability ability in 0-10 cm soil layer decreased in the order:thinning rate (20%) > thinning rate (10%) > CK > thinning rate (30%); the total soil porosity and non-capillary porosity of woodland increased with the increase of thinning intensity and the they was significantly higher uneder thinning rate greater than 20% than those of the control, while the soil bulk density decreases with the thinning intensity. Thinning had no significant effect on soil infiltration and soil physical properties in 10-20 cm soil layer. The plant root structure index increased with the increase of thinning intensity. According to the correlation analysis, the soil bulk density, total porosity, non-capillary porosity, root length density and root surface area density are the key factors affecting soil permeability in this area. The Philip model can accurately describe the process of soil water infiltration in the study area. Thinning had a significant improvement on the permeability of soil surface (0-10 cm), but had no significant effect on the permeability of deeper soil (10-20 cm).

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