| 岩溶断陷盆地高原面洼地不同坡位土壤抗蚀性研究 |
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| 关键词:fault basin soil anti-erodibility slope position depression |
| 基金项目:国家重点研发专项计划课题(编号: 2016YFC0502503);广西重点实验室建设项目(编号: 19-185-7);国家自然科学基金青年基金(编号: 41502342);国家自然科学基金面上项目(编号: 41471447) |
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| 摘要: |
| A Study of Soil Anti-erodibility of Different Slope Positions on Plateau Depression in Karst Gabin Basin |
| In order to reveal the anti-erodibility of soil of different slope positions on Plateau depression in karst gabin basin, the authors took the soil of different soil layers (0–20 cm, 20–40 cm) in different slope positions (up slope, middle slope, downhill and slope bottom) in plateau depression area as the research object. Through the determination and analysis of 16 soil anti- erodibility indexes, the influence of different slope positions on soil anti-erodibility was studied. The results are as follows: In different depths of soil layer, the content of soil water stable macro-aggregate is in order of up slope > downhill > slope bottom > middle slope (P＜0.05), decreasing with soil depth. The soil anti-erodibility is in order of 0–20 cm soil layer, up slope > downhill > slope bottom > middle slope(P＜0.05), 0–40 cm soil layer, downhill > slope bottom > upper slope > middle slope (P＜0.05). With the increase of soil depth, soil anti-erodibility gradually decreases; clay, organic carbon, electric conductance, PAD and MWDwet are five best indexes for evaluating the soil anti-erodibility of slope position in karst fault basin. It is suggested that different measures should be taken according to the difference of soil anti-erodibility of different slope positions, so as to reduce water and soil leakage, enhance soil anti erosion capability and improve the local ecological environment. |
| LIU Peng,JIANG Zhong-cheng,LI Yan-qing,LAN Fu-ning,YU Yang,HUANG Ying-xia.2021.A Study of Soil Anti-erodibility of Different Slope Positions on Plateau Depression in Karst Gabin Basin[J].Acta Geoscientica Sinica,42(3):373-381. |
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