Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu
The Gully Consolidation and Highland Protection (GCHP) project is crucial in preventing gully erosion in the Loess Plateau. However, there are new problems after the completion of the GCHP project, such as secondary disasters caused by sudden changes in water flow paths. To study the impact of diffe...
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/15/2764 |
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| author | Zhixin Zhao Aidi Huo Yuxiang Cheng Pingping Luo Jianbing Peng Ahmed Elbeltagi Mohamed EL-Sayed Abuarab Ali Mokhtar Adnan Ahmed |
| author_facet | Zhixin Zhao Aidi Huo Yuxiang Cheng Pingping Luo Jianbing Peng Ahmed Elbeltagi Mohamed EL-Sayed Abuarab Ali Mokhtar Adnan Ahmed |
| author_sort | Zhixin Zhao |
| collection | DOAJ |
| description | The Gully Consolidation and Highland Protection (GCHP) project is crucial in preventing gully erosion in the Loess Plateau. However, there are new problems after the completion of the GCHP project, such as secondary disasters caused by sudden changes in water flow paths. To study the impact of different GCHP measures on runoff and sediment production, we conducted a series of scouring experiments using the similarity principle, taking Fengbao Gully, Xifeng District, Qingyang City, Gansu Province, as a prototype. Moreover, three scenarios in the GCHP project (landfill (LT), nondrained terraced (NDT), and terrace with a drainage system (DT)) are established. Seasonal rainfall simulation experiments are conducted with a constant slope. The results showed that during summer rainfall, the 10 min runoff depth of LT is 67.83~276.03% higher than that of NDT. However, in spring and autumn, the runoff depth of NDT is 4.12~39.84% higher than LT’s. The sediment yield of LT is 0.06–5.58 times higher than that of NDT and 1.91–25.58 times higher than that of DT. The sediment yield of NDT is 0.46–4.02 times higher than that of LT and 2.27–23.93 times higher than that of DT, indicating that, under the same conditions, the effect of slope replacement with terraces for GCHP is better than that of gully head landfill in reducing soil erosion and secondary geological disasters. Furthermore, imperfect terrace construction can result in increased sediment yield. This study provides a scientific basis for the maintenance and later management of GCHP and helps implement soil and water conservation measures in similar regions worldwide. |
| first_indexed | 2024-03-11T00:13:48Z |
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| language | English |
| last_indexed | 2024-03-11T00:13:48Z |
| publishDate | 2023-07-01 |
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| series | Water |
| spelling | doaj.art-bba478cff4fc487b903b7a2f5352eece2023-11-18T23:47:26ZengMDPI AGWater2073-44412023-07-011515276410.3390/w15152764Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of GansuZhixin Zhao0Aidi Huo1Yuxiang Cheng2Pingping Luo3Jianbing Peng4Ahmed Elbeltagi5Mohamed EL-Sayed Abuarab6Ali Mokhtar7Adnan Ahmed8School of Water and Environment, Chang’an University, Xi’an 710054, ChinaSchool of Water and Environment, Chang’an University, Xi’an 710054, ChinaCollege of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, ChinaSchool of Water and Environment, Chang’an University, Xi’an 710054, ChinaCollege of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, ChinaAgricultural Engineering Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, EgyptAgricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza 12613, EgyptAgricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza 12613, EgyptSchool of Water and Environment, Chang’an University, Xi’an 710054, ChinaThe Gully Consolidation and Highland Protection (GCHP) project is crucial in preventing gully erosion in the Loess Plateau. However, there are new problems after the completion of the GCHP project, such as secondary disasters caused by sudden changes in water flow paths. To study the impact of different GCHP measures on runoff and sediment production, we conducted a series of scouring experiments using the similarity principle, taking Fengbao Gully, Xifeng District, Qingyang City, Gansu Province, as a prototype. Moreover, three scenarios in the GCHP project (landfill (LT), nondrained terraced (NDT), and terrace with a drainage system (DT)) are established. Seasonal rainfall simulation experiments are conducted with a constant slope. The results showed that during summer rainfall, the 10 min runoff depth of LT is 67.83~276.03% higher than that of NDT. However, in spring and autumn, the runoff depth of NDT is 4.12~39.84% higher than LT’s. The sediment yield of LT is 0.06–5.58 times higher than that of NDT and 1.91–25.58 times higher than that of DT. The sediment yield of NDT is 0.46–4.02 times higher than that of LT and 2.27–23.93 times higher than that of DT, indicating that, under the same conditions, the effect of slope replacement with terraces for GCHP is better than that of gully head landfill in reducing soil erosion and secondary geological disasters. Furthermore, imperfect terrace construction can result in increased sediment yield. This study provides a scientific basis for the maintenance and later management of GCHP and helps implement soil and water conservation measures in similar regions worldwide.https://www.mdpi.com/2073-4441/15/15/2764GCHPsoil and water conservationscenario simulationLoess Plateausoil erosion |
| spellingShingle | Zhixin Zhao Aidi Huo Yuxiang Cheng Pingping Luo Jianbing Peng Ahmed Elbeltagi Mohamed EL-Sayed Abuarab Ali Mokhtar Adnan Ahmed Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu Water GCHP soil and water conservation scenario simulation Loess Plateau soil erosion |
| title | Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu |
| title_full | Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu |
| title_fullStr | Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu |
| title_full_unstemmed | Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu |
| title_short | Impacts of Different Gully Consolidation and Highland Protection Models on the Runoff and Sediment Yield in Small Watershed of the Chinese Loess Plateau—A Case Study of Fengbugou in Qingyang City of Gansu |
| title_sort | impacts of different gully consolidation and highland protection models on the runoff and sediment yield in small watershed of the chinese loess plateau a case study of fengbugou in qingyang city of gansu |
| topic | GCHP soil and water conservation scenario simulation Loess Plateau soil erosion |
| url | https://www.mdpi.com/2073-4441/15/15/2764 |
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