Promoting ecological sustainability in the arid farming-pastoral ecotone through optimal water allocation

•Ecological sustainability is evaluated by integrating ecological resource, health, and services.•Regional water-driven dynamics of ecological sustainability are identified.•Conflicting objectives, randomness, and fuzziness are well addressed by the FCCSMOP model.•Optimal results can promote the sus...

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Vydáno v:Journal of hydrology (Amsterdam) Ročník 652; s. 132609
Hlavní autoři: Ji, Jiachen, Zhao, Tianqi, Wu, Zihan, Zhang, Fan, Yan, Jing, Lu, Naijing
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 01.05.2025
Témata:
Arid farming-pastoral ecotones
China
Ecological sustainability
ecotones
environmental sustainability
hydrology
Multi-objective programming
Optimal water allocation
water allocation
water use efficiency
Water-driven dynamics
China
Ecological sustainability
Multi-objective programming
Water-driven dynamics
Arid farming-pastoral ecotones
Optimal water allocation
ISSN:0022-1694
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Shrnutí:•Ecological sustainability is evaluated by integrating ecological resource, health, and services.•Regional water-driven dynamics of ecological sustainability are identified.•Conflicting objectives, randomness, and fuzziness are well addressed by the FCCSMOP model.•Optimal results can promote the sustainable development of the arid farming-pastoral ecotone. The ecological fragility of arid farming-pastoral ecotones is pronounced, and the promotion of regional ecological sustainability under the constraints of limited resources has become a crucial issue for these zones. This study presents a novel framework for evaluating ecological sustainability, quantifying its relationship with ecological water consumption, and optimizing water resources allocation for improving ecological sustainability. A fuzzy credibility-constrained stochastic multi-objective programming (FCCSMOP) model is applied to optimize regional water allocation schemes. The proposed approach has advantages in: (1) quantifying the water-driven dynamics of ecological sustainability at the county scale; (2) balancing economic, ecological, and social benefits; and (3) addressing randomness and fuzziness caused by hydrological variability and water managers’ preferences. This approach was applied to the northern foot of Yinshan Mountain (NFYM), Inner Mongolia Autonomous Region, China, leading to the following findings: (1) ecological sustainability in NFYM is poor, with 70.31% of the region having an ecological sustainability score below 0.43 in 2019; (2) there is a positive relationship between ecological sustainability and water consumption with the relatively high correlation (R2 ∈ [0.39, 0.87]); (3) the FCCSMOP model can effectively address the multiple conflicting objectives, randomness, and fuzziness when generating optimal water allocation schemes. A comparison between the optimization results (normal year, β=0.75) and the status quo shows improvements of 5.60%, 19.45%, and 6.35% in ecological sustainability, water use efficiency, and the index of water use structure balance, respectively. The models and methods can also be applied to similar regions suffering water and ecological crisis.
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ISSN:0022-1694
DOI:10.1016/j.jhydrol.2024.132609