Effects of Soil Texture on Effective Mixing Depth and Solute Loss
［Objective］ The effective mixing depth is an essential parameter for quantifying and predicting solute loss. It is of great significance to quantify the effective mixing depth of texture-differentiated soils and investigate the response of effective mixing depth to soil erosion, and solute loss in t...
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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/20250208 |
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| author | WANG Jie ZHENG Hao LI Zihan REN Shaocong WANG Shuoguo LIAN Qijie WEI Yujie CAI Chongfa |
| author_facet | WANG Jie ZHENG Hao LI Zihan REN Shaocong WANG Shuoguo LIAN Qijie WEI Yujie CAI Chongfa |
| author_sort | WANG Jie |
| collection | DOAJ |
| description | ［Objective］ The effective mixing depth is an essential parameter for quantifying and predicting solute loss. It is of great significance to quantify the effective mixing depth of texture-differentiated soils and investigate the response of effective mixing depth to soil erosion, and solute loss in the modeling of agricultural non-point source pollution. ［Methods］ The topsoils of five texturally distinct dry croplands in the Danjiangkou Reservoir Region were selected as the research object. The bromine ion tracer method was employed to quantify the effective mixing depth and its dynamic changes in texturally distinct soils. Simulated rainfall tests were conducted according to different bromine application depths [0 (soil surface), 0.5, 1, 2 and 5 cm] to determine the process of soil erosion and solute loss and analyze their responses to the effective mixing depth. ［Results］ Under the experimental conditions established in this study, the effective mixing depths during rainfall exhibited a range of 0.32—0.72, 0.11—0.57, 0.44—2.41, 0.11—1.04, and 0.13—0.28 cm. The effective mixing depths were found to be significantly affected by the clay content and soil texture (F=39.27, p<0.001). However, the effective mixing depths of different textured soils were significantly affected due to the differences in infiltration and flow production processes of different soil textures. Consequently, a significant linear relationship was not observed between the two. Furthermore, the effective mixing depth demonstrated a dynamic variation during the rainfall process, and exhibited a pronounced power function relationship with rainfall duration (R2>0.80). Furthermore, a notable distinction was observed in the soil erosion and sand production processes across varying effective mixing depths (F>12.068, p<0.001). Regression analysis demonstrated that the mean effective mixing depth exhibited a significant linear correlation with cumulative soil runoff and cumulative bromine loss (R2>0.92), as well as a significant exponential function relationship with sand production rate, sediment concentration, and cumulative sand production (R2>0.94). ［Conclusion］ The effective mixing depths of various textured soils exhibit notable disparities. A substantial linear or exponential correlation exists between the effective mixing depth, soil erosion, and solute loss indices. This correlation can be inverted through the runoff generation and sediment yield characteristics of the effective mixing depth, thereby enhancing the precision of the solute loss model. |
| format | Article |
| id | doaj-art-cea6aaa07fa446c39d2826e1ecfe1ced |
| 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-cea6aaa07fa446c39d2826e1ecfe1ced2025-08-20T02:20:18ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422025-04-01392657310.13870/j.cnki.stbcxb.2025.02.0151009-2242(2025)02-0065-09Effects of Soil Texture on Effective Mixing Depth and Solute LossWANG Jie0ZHENG Hao1LI Zihan2REN Shaocong3WANG Shuoguo4LIAN Qijie5WEI Yujie6CAI Chongfa7College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China［Objective］ The effective mixing depth is an essential parameter for quantifying and predicting solute loss. It is of great significance to quantify the effective mixing depth of texture-differentiated soils and investigate the response of effective mixing depth to soil erosion, and solute loss in the modeling of agricultural non-point source pollution. ［Methods］ The topsoils of five texturally distinct dry croplands in the Danjiangkou Reservoir Region were selected as the research object. The bromine ion tracer method was employed to quantify the effective mixing depth and its dynamic changes in texturally distinct soils. Simulated rainfall tests were conducted according to different bromine application depths [0 (soil surface), 0.5, 1, 2 and 5 cm] to determine the process of soil erosion and solute loss and analyze their responses to the effective mixing depth. ［Results］ Under the experimental conditions established in this study, the effective mixing depths during rainfall exhibited a range of 0.32—0.72, 0.11—0.57, 0.44—2.41, 0.11—1.04, and 0.13—0.28 cm. The effective mixing depths were found to be significantly affected by the clay content and soil texture (F=39.27, p<0.001). However, the effective mixing depths of different textured soils were significantly affected due to the differences in infiltration and flow production processes of different soil textures. Consequently, a significant linear relationship was not observed between the two. Furthermore, the effective mixing depth demonstrated a dynamic variation during the rainfall process, and exhibited a pronounced power function relationship with rainfall duration (R2>0.80). Furthermore, a notable distinction was observed in the soil erosion and sand production processes across varying effective mixing depths (F>12.068, p<0.001). Regression analysis demonstrated that the mean effective mixing depth exhibited a significant linear correlation with cumulative soil runoff and cumulative bromine loss (R2>0.92), as well as a significant exponential function relationship with sand production rate, sediment concentration, and cumulative sand production (R2>0.94). ［Conclusion］ The effective mixing depths of various textured soils exhibit notable disparities. A substantial linear or exponential correlation exists between the effective mixing depth, soil erosion, and solute loss indices. This correlation can be inverted through the runoff generation and sediment yield characteristics of the effective mixing depth, thereby enhancing the precision of the solute loss model.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250208soil textureeffective mixing depthsoil erosionsoil solute loss |
| spellingShingle | WANG Jie ZHENG Hao LI Zihan REN Shaocong WANG Shuoguo LIAN Qijie WEI Yujie CAI Chongfa Effects of Soil Texture on Effective Mixing Depth and Solute Loss Shuitu Baochi Xuebao soil texture effective mixing depth soil erosion soil solute loss |
| title | Effects of Soil Texture on Effective Mixing Depth and Solute Loss |
| title_full | Effects of Soil Texture on Effective Mixing Depth and Solute Loss |
| title_fullStr | Effects of Soil Texture on Effective Mixing Depth and Solute Loss |
| title_full_unstemmed | Effects of Soil Texture on Effective Mixing Depth and Solute Loss |
| title_short | Effects of Soil Texture on Effective Mixing Depth and Solute Loss |
| title_sort | effects of soil texture on effective mixing depth and solute loss |
| topic | soil texture effective mixing depth soil erosion soil solute loss |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250208 |
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