[1]ZHANG Yan,HUANG Yan-he,LIN Jin-shi,et al.Study on Permeability Discrepance and Influence Factors of Different Soil Layers in Collapsing Hill[J].Research of Soil and Water Conservation,2014,21(03):37-40,46.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
37-40,46
Column:
Public date:
2014-06-28
- Title:
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Study on Permeability Discrepance and Influence Factors of Different Soil Layers in Collapsing Hill
- Author(s):
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ZHANG Yan, HUANG Yan-he, LIN Jin-shi, GE Hong-li, JIANG Fang-shi, ZHU Gao-li, LIN Chao-peng
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College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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- Keywords:
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collapsing hill; permeability; vertical soil profile; relatively impermeable layer
- CLC:
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S157.1
- DOI:
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- Abstract:
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Soil erosion is influenced by permeability of different soil layers in collapsing hill. In this study, 22 soil samples in different layers were collected, and the permeability of each layer was measured by the metal cylinder method. Results showed that: there were large differences of permeability in various soil layers, red soil layer had a higher permeability than the other two soil layers, There is a relatively impermeable layer about 0.1 meter below the soil surface, and its thickness is about 1 meter. Stepwise regression was used to analyze influence factors on permeability of different soil layers. The main influence factors are bulk density and soil mechanical composition for relatively impermeable layer, and the factors for sandy soil layer and debris layer were clay contents and soil mechanical composition, respectively.