Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region
［Objective］ To investigate the characteristics of rill erosion on slopes under different slope gradients and rainfall-runoff conditions. ［Methods］ Continuous simulated rainfall and upper slope inflow tests were conducted to study the erosion processes on slopes with two slope gradients (5° and 10°)...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal of Soil and Water Conservation
2025-04-01
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| Series: | Shuitu Baochi Xuebao |
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| Online Access: | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250202 |
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| author | WANG Tingting SHEN Haiou LIANG Yushi LIU Jianxiang ZHAO Qiang WANG Xueying TIAN Li |
| author_facet | WANG Tingting SHEN Haiou LIANG Yushi LIU Jianxiang ZHAO Qiang WANG Xueying TIAN Li |
| author_sort | WANG Tingting |
| collection | DOAJ |
| description | ［Objective］ To investigate the characteristics of rill erosion on slopes under different slope gradients and rainfall-runoff conditions. ［Methods］ Continuous simulated rainfall and upper slope inflow tests were conducted to study the erosion processes on slopes with two slope gradients (5° and 10°) and across three rainfall-runoff stages (rainfall, inflow, and rainfall+inflow). ［Results］ The volumes of slope runoff and erosion increased with slope gradient. Under rainfall conditions at a 5° slope, the runoff and erosion volumes were 1.06 and 2.23 times of those under inflow conditions, respectively, while at a 10° slope, the runoff and erosion volumes were 1.26 and 3.34 times of those under inflow conditions. The runoff rate initially increased over time and then tended to stabilize. The initial runoff production time occurred earlier with increasing rainfall frequency and slope gradient, with both the stable runoff rate and sediment yield rate increasing correspondingly. Under the same slope gradient, the contribution rates of slope runoff and erosion under continuous rainfall conditions decreased with each additional rainfall event. Under continuous inflow conditions, the contribution rate of slope runoff was the highest during the first event, reaching 56.40%, while the contribution rate of slope erosion was the highest during the third event, being 87.50%. Correlation analysis revealed that slope runoff and erosion were highly significantly correlated with the rainfall inflow treatments and the interaction between slope gradient and rainfall inflow treatments (p<0.001). Variance analysis indicated that the effects of rainfall inflow treatments on slope runoff and erosion were highly significant (p<0.001), while the effects of slope gradient were moderately significant (p<0.01). Rill erosion accounted for 37.69%—85.45% and 53.99%—90.65% of the total slope erosion at the two slope gradients, respectively, with rill erosion increasing as the gradient increased. ［Conclusion］ The findings contribute to a deeper understanding of the mechanisms of rill erosion and hold significant implications for soil and water conservation efforts in the black soil region of Northeast China. |
| format | Article |
| id | doaj-art-bdd036a7579f4f3e82b18998cbde087a |
| institution | OA Journals |
| issn | 1009-2242 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Department of Journal of Soil and Water Conservation |
| record_format | Article |
| series | Shuitu Baochi Xuebao |
| spelling | doaj-art-bdd036a7579f4f3e82b18998cbde087a2025-08-20T01:47:55ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422025-04-01392122010.13870/j.cnki.stbcxb.2025.02.0161009-2242(2025)02-0012-09Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil RegionWANG Tingting0SHEN Haiou1LIANG Yushi2LIU Jianxiang3ZHAO Qiang4WANG Xueying5TIAN Li6College of Resources and Environment, Jilin Agricultural University, Changchun 130118, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun 130118, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun 130118, ChinaCharlson Reservoir Authority of Song-Liao Water Resources Commission, Xingan League, Inner Mongolia 137400, ChinaSoil and Fertilizer General Station of Jilin Province, Changchun 130022, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun 130118, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun 130118, China［Objective］ To investigate the characteristics of rill erosion on slopes under different slope gradients and rainfall-runoff conditions. ［Methods］ Continuous simulated rainfall and upper slope inflow tests were conducted to study the erosion processes on slopes with two slope gradients (5° and 10°) and across three rainfall-runoff stages (rainfall, inflow, and rainfall+inflow). ［Results］ The volumes of slope runoff and erosion increased with slope gradient. Under rainfall conditions at a 5° slope, the runoff and erosion volumes were 1.06 and 2.23 times of those under inflow conditions, respectively, while at a 10° slope, the runoff and erosion volumes were 1.26 and 3.34 times of those under inflow conditions. The runoff rate initially increased over time and then tended to stabilize. The initial runoff production time occurred earlier with increasing rainfall frequency and slope gradient, with both the stable runoff rate and sediment yield rate increasing correspondingly. Under the same slope gradient, the contribution rates of slope runoff and erosion under continuous rainfall conditions decreased with each additional rainfall event. Under continuous inflow conditions, the contribution rate of slope runoff was the highest during the first event, reaching 56.40%, while the contribution rate of slope erosion was the highest during the third event, being 87.50%. Correlation analysis revealed that slope runoff and erosion were highly significantly correlated with the rainfall inflow treatments and the interaction between slope gradient and rainfall inflow treatments (p<0.001). Variance analysis indicated that the effects of rainfall inflow treatments on slope runoff and erosion were highly significant (p<0.001), while the effects of slope gradient were moderately significant (p<0.01). Rill erosion accounted for 37.69%—85.45% and 53.99%—90.65% of the total slope erosion at the two slope gradients, respectively, with rill erosion increasing as the gradient increased. ［Conclusion］ The findings contribute to a deeper understanding of the mechanisms of rill erosion and hold significant implications for soil and water conservation efforts in the black soil region of Northeast China.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250202rill erosionslope gradientrainfallinflowblack soil region |
| spellingShingle | WANG Tingting SHEN Haiou LIANG Yushi LIU Jianxiang ZHAO Qiang WANG Xueying TIAN Li Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region Shuitu Baochi Xuebao rill erosion slope gradient rainfall inflow black soil region |
| title | Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region |
| title_full | Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region |
| title_fullStr | Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region |
| title_full_unstemmed | Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region |
| title_short | Effects of Continuous Rainfall and Runoff under Different Slope Conditions on Hillslope Soil Erosion in the Black Soil Region |
| title_sort | effects of continuous rainfall and runoff under different slope conditions on hillslope soil erosion in the black soil region |
| topic | rill erosion slope gradient rainfall inflow black soil region |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250202 |
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