Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment
Soil anti-scourability is of great significance for soil and water conservation and ecological environment construction in Karst area. Taking the soils in broad-leaved forest, coniferous forest and shrub-grass land as the research objects, this paper researches the dynamic variation characteristics...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.02.010 |
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| author | WEI Xiaocha LONG Xiaomei TANG Xin LIU Yang XIAO Yang LI Hongguang |
| author_facet | WEI Xiaocha LONG Xiaomei TANG Xin LIU Yang XIAO Yang LI Hongguang |
| author_sort | WEI Xiaocha |
| collection | DOAJ |
| description | Soil anti-scourability is of great significance for soil and water conservation and ecological environment construction in Karst area. Taking the soils in broad-leaved forest, coniferous forest and shrub-grass land as the research objects, this paper researches the dynamic variation characteristics of soil anti-scourability and its influencing factors under different vegetation types in karst area by the artificial simulated rainfall and undisturbed soil scouring experiment. The results show that: (1) Within 2 min of rainfall scouring, the sediment yield of soil in different vegetation types is especially large, then gradually decreases, and reaches a stable state after 9 min. In general, the sediment yield of shrub-grass land was largest, followed by coniferous forest and broad-leaved forest, and the sediment yield of different vegetation types increases gradually with the increase of the slope. (2) The soil anti-scourability of shrub-grass land is lowest at the slope of 15°, which is obvious different from the broad-leaved and coniferous forest, but in the slope of 45°and within 4~12 min of rainfall scouring, the soil anti-scourability of broad-leaved forest is the strongest, followed by shrub-grass land and coniferous forest. Soil anti-scourability of different vegetation types are different, that is broad-leaved forest >coniferous forest >shrub-grass land. With strongest soil anti-scourability, the broad-leaved forest is beneficial to soil and water conservation. (3) The soil anti-scourability of different vegetation types increases gradually with the increase of the rainfall scouring time, and the slope and root system, especially the root of vegetation with more than 1 mm diameter, have important influences on the soil anti-scourability. |
| format | Article |
| id | doaj-art-e26d8b5b16b149ebb31186d768052fea |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-e26d8b5b16b149ebb31186d768052fea2025-01-15T02:31:32ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147652155Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring ExperimentWEI XiaochaLONG XiaomeiTANG XinLIU YangXIAO YangLI HongguangSoil anti-scourability is of great significance for soil and water conservation and ecological environment construction in Karst area. Taking the soils in broad-leaved forest, coniferous forest and shrub-grass land as the research objects, this paper researches the dynamic variation characteristics of soil anti-scourability and its influencing factors under different vegetation types in karst area by the artificial simulated rainfall and undisturbed soil scouring experiment. The results show that: (1) Within 2 min of rainfall scouring, the sediment yield of soil in different vegetation types is especially large, then gradually decreases, and reaches a stable state after 9 min. In general, the sediment yield of shrub-grass land was largest, followed by coniferous forest and broad-leaved forest, and the sediment yield of different vegetation types increases gradually with the increase of the slope. (2) The soil anti-scourability of shrub-grass land is lowest at the slope of 15°, which is obvious different from the broad-leaved and coniferous forest, but in the slope of 45°and within 4~12 min of rainfall scouring, the soil anti-scourability of broad-leaved forest is the strongest, followed by shrub-grass land and coniferous forest. Soil anti-scourability of different vegetation types are different, that is broad-leaved forest >coniferous forest >shrub-grass land. With strongest soil anti-scourability, the broad-leaved forest is beneficial to soil and water conservation. (3) The soil anti-scourability of different vegetation types increases gradually with the increase of the rainfall scouring time, and the slope and root system, especially the root of vegetation with more than 1 mm diameter, have important influences on the soil anti-scourability.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.02.010soil anti-scourabilityvegetation typesslopeartificial simulated rainfallundisturbed soil scouring experimentKarst area |
| spellingShingle | WEI Xiaocha LONG Xiaomei TANG Xin LIU Yang XIAO Yang LI Hongguang Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment Renmin Zhujiang soil anti-scourability vegetation types slope artificial simulated rainfall undisturbed soil scouring experiment Karst area |
| title | Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment |
| title_full | Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment |
| title_fullStr | Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment |
| title_full_unstemmed | Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment |
| title_short | Research on Soil Anti-scourability in Karst Area Based on Artificial Simulated Rainfall and Undisturbed Soil Scouring Experiment |
| title_sort | research on soil anti scourability in karst area based on artificial simulated rainfall and undisturbed soil scouring experiment |
| topic | soil anti-scourability vegetation types slope artificial simulated rainfall undisturbed soil scouring experiment Karst area |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.02.010 |
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