Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope
[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of water and gravity combined erosion under differe...
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Editorial Department of Journal of Soil and Water Conservation
2024-12-01
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| Series: | Shuitu Baochi Xuebao |
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| Online Access: | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240606 |
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| author | ZHANG Xiaohan MA Lan YU Chong WU Zhiwei WANG Jie |
| author_facet | ZHANG Xiaohan MA Lan YU Chong WU Zhiwei WANG Jie |
| author_sort | ZHANG Xiaohan |
| collection | DOAJ |
| description | [Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of water and gravity combined erosion under different conditions and its synergistic change law with gravel content. [Methods] Two types of soil, with no gravel and gravel content of 40%, were set up. Through the method of artificial simulation of continuous rainfall in the field, the influence of gravel content on soil erosion process and its synergistic change rule under the combined action of water and gravity were discussed. [Results] (1) Gravel-free soil did not produce runoff under two rainfalls. The gravel-containing soil did not produce runoff under the first rainfall, but started to produce runoff at 36 min under the second rainfall. The initial runoff time basically tended to advance with the increase of rainfall times, and the range of variation was 8~36 min. (2) The total runoff of each rainfall in the gravel soil was 8.97, 63.9, 70.8, 79.7 and 127.5 L, respectively. The runoff process in the later stage of each rainfall was basically the same, and the runoff rate decreased gradually. (3) The total sediment yield of each rainfall was 0.26, 10.6, 5.74, 3.15, 9.37 g, the erosion rate of the gravel soil fluctuated greatly under each rainfall, but the overall trend decreased in the later stage of rainfall. (4) Gravity erosion occurred in the non-gravel soil during the second rainfall. The erosion amount was 106.37 × 103 cm3, and the deposition amount was 76.28 × 103 cm3. Under the third rainfall, a small area of collapse occurred in the middle and lower part of the gravel soil, and the amount of gravity erosion was 6.08 × 103 cm3. [Conclusion] The research results can provide a theoretical basis for analyzing the coupling mechanism of water and gravity combined erosion forces. |
| format | Article |
| id | doaj-art-eb3377aba4104edbb9bd03ac54e2f720 |
| institution | Kabale University |
| issn | 1009-2242 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Department of Journal of Soil and Water Conservation |
| record_format | Article |
| series | Shuitu Baochi Xuebao |
| spelling | doaj-art-eb3377aba4104edbb9bd03ac54e2f7202025-02-10T07:24:20ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422024-12-01386546010.13870/j.cnki.stbcxb.2024.06.0311009-2242-(2024)06-0054-07Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil SlopeZHANG Xiaohan0MA Lan1YU Chong2WU Zhiwei3WANG Jie4School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaSchool of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaCollege of Water Sciences, Beijing Normal University, Beijing 100875, ChinaSchool of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaBaoding Soil and Water Conservation Experimental Station, Baoding, Hebei 071051, China[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of water and gravity combined erosion under different conditions and its synergistic change law with gravel content. [Methods] Two types of soil, with no gravel and gravel content of 40%, were set up. Through the method of artificial simulation of continuous rainfall in the field, the influence of gravel content on soil erosion process and its synergistic change rule under the combined action of water and gravity were discussed. [Results] (1) Gravel-free soil did not produce runoff under two rainfalls. The gravel-containing soil did not produce runoff under the first rainfall, but started to produce runoff at 36 min under the second rainfall. The initial runoff time basically tended to advance with the increase of rainfall times, and the range of variation was 8~36 min. (2) The total runoff of each rainfall in the gravel soil was 8.97, 63.9, 70.8, 79.7 and 127.5 L, respectively. The runoff process in the later stage of each rainfall was basically the same, and the runoff rate decreased gradually. (3) The total sediment yield of each rainfall was 0.26, 10.6, 5.74, 3.15, 9.37 g, the erosion rate of the gravel soil fluctuated greatly under each rainfall, but the overall trend decreased in the later stage of rainfall. (4) Gravity erosion occurred in the non-gravel soil during the second rainfall. The erosion amount was 106.37 × 103 cm3, and the deposition amount was 76.28 × 103 cm3. Under the third rainfall, a small area of collapse occurred in the middle and lower part of the gravel soil, and the amount of gravity erosion was 6.08 × 103 cm3. [Conclusion] The research results can provide a theoretical basis for analyzing the coupling mechanism of water and gravity combined erosion forces.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240606red soilwater erosiongravity erosiongravel contenterosion sediment yield |
| spellingShingle | ZHANG Xiaohan MA Lan YU Chong WU Zhiwei WANG Jie Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope Shuitu Baochi Xuebao red soil water erosion gravity erosion gravel content erosion sediment yield |
| title | Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope |
| title_full | Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope |
| title_fullStr | Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope |
| title_full_unstemmed | Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope |
| title_short | Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope |
| title_sort | soil erosion process under the combined action of water and gravity on red soil slope |
| topic | red soil water erosion gravity erosion gravel content erosion sediment yield |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240606 |
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