干旱区生态环境知识资源中心(Arid): Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions

Arid

DOI	10.3390/su13063547
	Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions
	Bhatti, Muhammad Tousif; Ashraf, Muhammad; Anwar, Arif A.
通讯作者	Bhatti, MT (corresponding author), Int Water Management Inst, Lahore 53700, Pakistan. ; Ashraf, M (corresponding author), Khwaja Fareed Univ Engn & Informat Technol, Dept Agr Engn, Rahim Yar Khan 64200, Pakistan.
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2021
卷号	13 期号:6
英文摘要	Soil erosion is a serious environmental issue in the Gomal River catchment shared by Pakistan and Afghanistan. The river segment between the Gomal Zam dam and a diversion barrage (similar to 40 km) brings a huge load of sediments that negatively affects the downstream irrigation system, but the sediment sources have not been explored in detail in this sub-catchment. The analysis of flow and sediment data shows that the significant sediment yield is still contributing to the diversion barrage despite the Gomal Zam dam construction. However, the sediment share at the diversion barrage from the sub-catchment is much larger than its relative size. A spatial assessment of erosion rates in the sub-catchment with the revised universal soil loss equation (RUSLE) shows that most of the sub-catchment falls into very severe and catastrophic erosion rate categories (>100 t h(-1)y(-1)). The sediment entry into the irrigation system can be managed both by limiting erosion in the catchment and trapping sediments into a hydraulic structure. The authors tested a scenario by improving the crop management factor in RUSLE as a catchment management option. The results show that improving the crop management factor makes little difference in reducing the erosion rates in the sub-catchment, suggesting other RUSLE factors, and perhaps slope is a more obvious reason for high erosion rates. This research also explores the efficiency of a proposed settling reservoir as a sediment load management option for the flows diverted from the barrage. The proposed settling reservoir is simulated using a computer-based sediment transport model. The modeling results suggest that a settling reservoir can reduce sediment entry into the irrigation network by trapping 95% and 25% for sand and silt particles, respectively. The findings of the study suggest that managing the sub-catchment characterizing an arid region and having steep slopes and barren mountains is a less compelling option to reduce sediment entry into the irrigation system compared to the settling reservoir at the diversion barrage. Managing the entire catchment (including upstream of Gomal Zam dam) can be a potential solution, but it would require cooperative planning due to the transboundary nature of the Gomal river catchment. The output of this research can aid policy and decision-makers to sustainably manage sedimentation issues in the irrigation network.
英文关键词	soil erosion sediment yield RUSLE sediment transport modeling Gomal River arid regions
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000645805900001
WOS关键词	LAND-USE CHANGE ; LOSS EQUATION USLE ; RIVER-BASIN ; CHECK-DAMS ; RUSLE ; GIS ; YIELD ; IMPACT ; RISK ; PREDICTION
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351822
作者单位	[Bhatti, Muhammad Tousif; Anwar, Arif A.] Int Water Management Inst, Lahore 53700, Pakistan; [Ashraf, Muhammad] Khwaja Fareed Univ Engn & Informat Technol, Dept Agr Engn, Rahim Yar Khan 64200, Pakistan
推荐引用方式 GB/T 7714	Bhatti, Muhammad Tousif,Ashraf, Muhammad,Anwar, Arif A.. Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions[J],2021,13(6).
APA	Bhatti, Muhammad Tousif,Ashraf, Muhammad,&Anwar, Arif A..(2021).Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions.SUSTAINABILITY,13(6).
MLA	Bhatti, Muhammad Tousif,et al."Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions".SUSTAINABILITY 13.6(2021).