Multi-Objective Ecological Operation of Large-Scale Reservoir-Gate System Coupled with Vegetation Priority Irrigation in Arid Regions

Dong Liu, Tao Bai (), Mingjiang Deng, Jia Xu and Xiaoting Wei
Additional contact information
Dong Liu: Xi’an University of Technology
Tao Bai: Xi’an University of Technology
Mingjiang Deng: Xi’an University of Technology
Jia Xu: Engineering Research Center of Water Resources and Ecological Water Conservancy in Cold and Arid Area of Xinjiang
Xiaoting Wei: Xi’an University of Technology

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2024, vol. 38, issue 13, No 8, 5097-5122

Abstract: Abstract Under the influence of climate change and human activities, riparian ecosystems in arid regions are facing severe challenges such as extensive vegetation death. Meanwhile, conventional reservoir operation and vegetation irrigation have low water use efficiency and unsatisfactory vegetation restoration effect. For improving the efficiency of water resources regulation and protect riparian ecosystems in arid regions, this study proposes a multi-objective reservoir-gate ecological operation model coupled with vegetation priority irrigation. Firstly, based on ecological project layout and riparian vegetation types, ecological irrigation districts and ecological functional zones are divided for precise zoning water regulation, and then the irrigation order of "key protected zones > key restoration zones > ecological sensitive zones" and the water supply priority of irrigation districts are formulated for vegetation priority irrigation. Secondly, a long-term multi-objective reservoir-gate operation model coupled with vegetation priority irrigation is established, and an improved parallel approximate evaluation-based algorithm (RG-PAEM) is proposed for enhancing the search ability and calculation efficiency of optimization model. Finally, ecological operation effects under vegetation priority irrigation are analyzed through a case study of Tarim River basin in northwestern China. Results show that: (1) compared with conventional ecological irrigation, vegetation priority irrigation improves ecological and agricultural water supplies in Tarim River mainstream; (2) under vegetation priority irrigation, annual ecological water supplies of Level I to Level V irrigation districts account for 3%, 15%, 28%, 48%, and 6% of the total, respectively, and monthly ecological water supply reaches the maximum in July; (3) the upper and middle reaches of mainstream are important areas for riparian vegetation protection, the ecological water shortage decreased by 10% and 16% respectively through reservoir-gate ecological operation and vegetation priority irrigation. The study results provide theoretical and technical support for achieving scientific water resources regulation and sustaining desert riparian ecosystems.

Keywords: Ecological operation; Reservoir-gate system; Desert riparian vegetation; Vegetation priority irrigation; Irrigation order; Model coupling (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s11269-024-03903-y Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:waterr:v:38:y:2024:i:13:d:10.1007_s11269-024-03903-y

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11269

DOI: 10.1007/s11269-024-03903-y

Access Statistics for this article

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA) is currently edited by G. Tsakiris

More articles in Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA) from Springer, European Water Resources Association (EWRA)
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().