Preprints
https://doi.org/10.5194/hess-2021-521
https://doi.org/10.5194/hess-2021-521

  21 Oct 2021

21 Oct 2021

Review status: this preprint is currently under review for the journal HESS.

A system dynamic model to quantify the impacts of water resources allocation on water-energy-food-society (WEFS) nexus

Yujie Zeng1, Dedi Liu1,2, Shenglian Guo1, Lihua Xiong1, Pan Liu1, Jiabo Yin1,2, and Zhenhui Wu1 Yujie Zeng et al.
  • 1State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
  • 2Hubei Province Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan 430072, China

Abstract. Sustainable management of water-energy-food (WEF) nexus remains an urgent challenge, as interactions between WEF and community sensitivity and reservoir operation in water system are often neglected. This paper aims to provide a new approach for modeling WEF nexus by incorporating community sensitivity and reservoirs operation into the system. The co-evolution behaviors of the nexus across water, energy, food and society (WEFS) were simulated by the system dynamic model. The reservoirs operation was simulated to determine water supply for energy and food systems by the Interactive River-Aquifer Simulation water resources allocations model. Shortage rates for water, energy and food resulted from the simulations were used to qualify their impacts on WEFS nexus through environmental awareness (EA) in society system. Community sensitivity indicated by EA can adjust the co-evolution behaviors of WEFS nexus through feedback loops. The proposed approach was applied to the mid-lower reaches of Hanjiang river basin in China as a case study. Results show that EA accumulation is mainly from shortages of water and energy, and the available water and energy are the vital resources to sustain WEFS nexus. Feedback driven by EA effectively keeps the system from collapsing and contributes to the concordant development of WEFS nexus. Water resources allocation can remarkably ensure water supply through reservoirs operation, decreasing water shortage rate from 16.60 % to 7.53 %. The resource constraining the WEFS nexus is transferred from water to energy. This paper therefore contributes to the understanding of interactions across WEFS system and helps the efficiency improving of resources management.

Yujie Zeng et al.

Status: open (until 16 Dec 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2021-521', Anonymous Referee #1, 04 Nov 2021 reply
  • RC2: 'Comment on hess-2021-521', Anonymous Referee #2, 18 Nov 2021 reply
  • RC3: 'Comment on hess-2021-521', Anonymous Referee #3, 20 Nov 2021 reply
  • RC4: 'Comment on hess-2021-521', Anonymous Referee #4, 20 Nov 2021 reply

Yujie Zeng et al.

Yujie Zeng et al.

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Short summary
Sustainability of water-energy-food (WEF) nexus remains challenge, as interactions between WEF and community sensitivity and reservoir operation in water system are often neglected. The paper applies system dynamics model to simulate WEF nexus by incorporating community sensitivity and reservoirs operation. Results indicate environmental awareness keeps WEFS nexus from collapsing by feedback and water resources allocation sustains WEFS nexus by ensuring water supply through reservoir operation.