[1]PENG Yi,LI Yu-yuan,LI Zhong-wu,et al.Comparison Study on Soil Infiltration Characteristics in Red Soil Slope Ecosystems[J].Research of Soil and Water Conservation,2009,16(06):205-209.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 06
Page number:
205-209
Column:
Public date:
2009-12-20
- Title:
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Comparison Study on Soil Infiltration Characteristics in Red Soil Slope Ecosystems
- Author(s):
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PENG Yi1,2, LI Yu-yuan2, LI Zhong-wu1, YANG Xiao-cong1,2, PAN Chun-xiang2, XIE Xiao-li2
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1. College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hu’nan University, Ministry of Education, Changsha 410082, China;
2. Institute of Subtropical Agriculture, Chinese Academy of Science, Changsha 410125, China
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- Keywords:
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soil infiltration; red soil; slope ecosystems; disc permeameter
- CLC:
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S152.7;S181
- DOI:
-
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- Abstract:
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Soil infiltration characteristics, process and their relationship with soil main physical and chemical properties were studied. Six typical slope ecosystems in subtropical red soil region were selected and disc permeameter method was used. The selected ecosystems comprised of cropland (including steep and gentle slope types), grassland, shrub, tea garden, mixed evergreen and deciduous broadleaf forest, oil-tea (Camellia oleifera), woodland. Results showed that the relationship between soil infiltration rate and time in each ecosystems could be fitted as Y=aX-b (P<0.01). The stable infiltration rate (Is) in all ecosystems ranged from 0.024 to 0.080 mm/min, while Is was the highest in cropland and oil-tea woodland but the lowest in grassland and tea garden. Is was negatively correlated to soil bulk density, initial moisture, but positively correlated to soil porosity. Infiltration process was mainly affected by soil porosity and clay content. The range of soil mean available pore size (MAPS) and macro-capillary length (MCL) were 0.064~0.179 mm and 41.5~128.2 mm respectively. However, MAPS and MCL were non-significantly related to main soil physical and chemical properties.