1.College of Economics & Management,Xinjiang Agricultural University,Urumqi 830052,China
2.School of Engineering Management & Real Estate (School of;Agriculture and Rural Development),Henan University of Economics and Law,Zhengzhou 450016,China
Objective This study investigates the degree of coupled and coordinated development of the Water-Energy-Food System (WEF system) in Northwest China, aiming to provide a reference for promoting the transformation toward sustainable and high-quality ecological and economic development. Methods Based on the data from 33 indicators covering 21 years (2002-2022) for the five provinces in Northwest China, the entropy value method and other methods were utilized to construct an evaluation system for WEF system indicators. On this basis, a coupling coordination degree model was constructed, and the temporal and spatial evolution characteristics of the WEF system′s coupling coordination degree in the five provinces were analyzed using ArcGIS and other software. Finally, the coupling coordination degree in the next 8 years was predicted by the gray prediction GM (1, 1) model. Results The comprehensive development index of WEF system in the five provinces in Northwest China showed a general upward trend from 2002 to 2022, with the food subsystem performing relatively the best. The coupling degree showed a gradual converging trend, and the coupling coordination degree showed a steady upward trend. Conclusion Overall, the degree of coupling development of WEF system in the five provinces is relatively low. Shaanxi and Xinjiang are in a stage of marginal coupling. Gansu and Qinghai are on the verge of imbalance, and Ningxia is in the stage of mild imbalance. The main factors restricting the coupling coordinated development are lagging development of water resources and energy. It is expected that in 2023-2030, the five provinces in Northwest China will continue the previous coupling development trend.
式中:W(u)代表水资源系统发展评价指数;E(y)代表能源系统发展评价指数;F(z)代表粮食系统发展评价指数;u' ij 、y' ij 、z' ij 分别为子3个系统内各指标标准化的值;ωj 为指标权重;T为水—能源—粮食(WEF)复合系统的综合评价指数;λ、μ、η分别为子3个系统的系数,代表该系统对WEF复合系统的重要程度。本文在前文梳理国内外相关研究后,认为3个子系统同等重要,即。
LiuY, YuE T, YangJ J, et al. Characteristics of spatial and temporal variation of actual evapotranspiration in the Arid Region of Northwest China from 1960 to 2019[J]. Research of Soil and Water Conservation, 2021,28(6):75-80,89.
[3]
World Economic Forum. Global Risks 2011 Report(6 th edition)[R]. Cologne: World Economic Forum, 2011.
[4]
GeM, YuK L, DingA G, et al. Input-output efficiency of water-energy-food and its driving forces: spatial-temporal heterogeneity of Yangtze River economic belt, China[J]. International Journal of Environmental Rese-arch and Public Health, 2022,19(3):1340.
[5]
MannanM, Al-AnsariT, MackeyH R, et al. Quantifying the Energy, Water and Food Nexus: a review of the latest developments based on life-cycle assessment[J]. Journal of Cleaner Production, 2018,193:300-314.
[6]
WhiteD J, HubacekK, FengK S, et al. The water-energy-food nexus in East Asia: a tele-connected value chainanalysis using inter regional input output analysis[J]. Applied Energy, 2018,210:550-567.
[7]
HanZ C, MaH L. Adaptability assessment and analysis of temporal and spatial differences of Water-Energy-Food system in Yangtze River Delta in China[J]. Sustainability, 2021,13(24):13543.
[8]
LiJ Q, HuangD C. Multi-dimensional dynamic spatio-temporal evolution of the green development efficiency of water-energy-food in China[J]. Water Policy, 2023,25(2):122-145.
[9]
NiY K, ChenY. Does the implementation sequence of adaptive management countermeasures affect the collaborative security of the water-energy-food nexus: a case study in the Yangtze River Economic Belt[J]. Ecological Indicators, 2024,163:112090.
[10]
HanX, ZhaoY, GaoX R, et al. Virtual water output intensifies the water scarcity in Northwest China: current situation, problem analysis and countermeasures[J]. Science of the Total Environment, 2021,765:144276.
LiW, ZhaoY, JiangS, et al. Pesearch progress and development englightement of the water, energy, and food nexus[J]. Acta Ecologica Sinica, 2024,(17):1-15.
LiL, BiJ, ZhouY C, et al. Research progress of regional environmental risk management: from the perspectives of food-energy-water nexus[J]. China Population,Resources and Environment, 2018,28(7):85-92.
LiH P, LiZ, ZhangJ B. Formation mechanism, spatio-temporal evolution, and influencing factors of agricultural energy rebound effect in China[J]. China Population,Resources and Environment, 2022,32(10):24-34.
ZhangZ L, ZhouX, ZhouY X. Spatiotemporal coupling and driving factors of water resources carrying capacity and grain production resilience in the lower reaches of Yellow River[J]. Research of Soil and Water Conservation, 2024,31(3):412-420,431.
LiuM M, PanP P, RenJ X, et al. Coupling coordination of food security and agricuitural water security in Beijing-Tianjin-Hebei region[J]. Chinese Journal of Agricultural Resources and Regional Planning, 2023,44(2):170-182.
WangH M, HongJ, LiuG.Simulation research on different policies of regional green development under the nexus of water-energy-food[J]. China Population,Resources and Environment,2019,29(6):74-84.
LiuZ M, LiuX Z, ZhuH Y, et al. Assessment of carbon peaking by province in China from the perspective of water-energy-food system coupling: based on LEAP model[J]. Economic Geography, 2024,44(1):118-129.
WangR, ZhuX X, PengY Y, et al. SpatioTemporal characteristics of water-energy-food coupling coordination in the Yellow River Basin in the period from 2000 to 2020[J]. Research of Soil and Water Conservation, 2024,31(1):354-362.
HuangY L, DengX J. Research progress on the “water-energy-food” nexus based on citespace[J]. Chinese Journal of Agricultural Resources and Regional Planning,2020,41(9):172-181
SunC Z, WeiY Q, ZhaoL S. Co-evolution of water-energy-food nexus in arid areas: take Northwest China as an example[J]. Journal of Natural Resources, 2022,37(2):320-333.
LiC Y, ZhangS Q. Chinese provincial water-energy-food coupling coordination degree and influencing factors research[J]. China Population,Resources and Environment, 2020,30(1):120-128.
SunZ X, ZhaoL D. The influence and mechanism of environmental regulation on the coordinated development of economy-resources-environment system in coastal cities of China[J]. Journal of Natural Resources, 2023,38(11):2773-2791.
ZhaoL S, LiuS J, SunC Z. Study on coupling and coordinated development of water-energy-food security system in the Yellow River Basin[J]. Water Resources Protection, 2021,37(1):69-78.
ZhouC, FengX G, TangR. Analysis and forecast of coupling coordination development among the regional economy-ecological environment-tourism industry: a case study of provinces along the Yangtze economic zone[J]. Economic Geography, 2016,36(3):186-193.
YinK D, ZhangK, YangW D. A discrete GM(1, 1) model based on probabilistic accumulation and its application to offshore gas production forecasting[J]. Systems Engineering Theory and Practice, 2024,44(8):2733-2748.