农业工程学报2026，Vol.42Issue(9)：331-339,9.DOI:10.11975/j.issn.1002-6819.202509160
水-能-粮关联视角下黄河中下游地区全要素生产率时空演变特征及驱动机制
Spatiotemporal evolution and driving mechanism of total factor productivity in the Middle and Lower Reaches of the Yellow River using water-energy-food nexus
摘要
Abstract
The water-energy-food(WEF)nexus can be closely interconnected with the production,allocation,and consumption of water,energy,and food in sustainable agriculture.One subsystem also strongly affects the others.Accordingly,the WEF nexus can improve the resource use efficiency under increasing resource scarcity and environmental pressure.A typical region,the middle and lower reaches of the Yellow River Basin(MLYR),is characterized by water scarcity,energy consumption,food production,and environmental constraints.From the WEF nexus perspective,total factor productivity(TFP)is expected to promote high-quality regional development and integrated resource governance under the dual pressures of rigid water constraints and limited environmental carrying capacity.This study aims to investigate the spatiotemporal evolution and driving mechanism of total factor productivity in the Middle and Lower reaches of the Yellow River using the water-energy-food nexus.Two scenarios were constructed,one considering undesirable outputs and another excluding them,to identify the effects of environmental constraints on TFP measurement.The slack-based measure directional distance function combined with the global Malmquist-Luenberger(SBM-DDF-GML)index was employed to evaluate the spatiotemporal evolution of urban TFP in the ML YR from 2010 to 2021.Dynamic productivity was captured to incorporate undesirable outputs,such as pollution emissions.Thereby,the efficiency evaluation framework was provided under environmental constraints.In addition,partial least squares regression(PLSR)was applied to identify the key factors driving TFP dynamics for the mechanism of efficiency evolution.The results show that urban TFP exhibited an overall upward trend during 2010-2021,indicating gradual advancement in resource allocation,production conditions,and technology.There were outstanding differences in magnitude and spatial pattern under the two scenarios.TFP with undesirable outputs(TFPu)ranged from 0.774 to 1.000,whereas conventional TFP without undesirable outputs(TFPc)ranged from 0.850 to 1.000.Furthermore,TFPu was consistently lower than TFPc among cities in the study period,and the average TFPu value(0.941)was also lower than the average TFPc value(0.957).Actual productivity was then overestimated without considering environmental costs,whereas the undesirable outputs provided a more reliable assessment of development quality.Spatially,TFPu generally shared a decreasing pattern from west to east,indicating stronger environmental constraints and lower resource use efficiency in the eastern region,when considering pollution.By contrast,TFPc displayed the higher-level pattern in the peripheral areas,whereas the lower levels were in the central region.Environmental constraints significantly reshaped the spatial pattern of productivity.The driving mechanism analysis further showed that the growth in desirable outputs and improvements in resource utilization efficiency were the main contributors to TFP enhancement,whereas undesirable outputs exerted a persistent inhibitory effect.Overall,the environmental constraints can redefine the assessment and evolution of resource use efficiency.The findings can also provide quantitative evidence to coordinate the water saving,pollution reduction,and resource optimization in the Yellow River Basin.关键词
水-能源-粮食关联关系/全要素生产率/非期望产出/SBM-DDF-GML/黄河中下游地区Key words
water-energy-food nexus/total factor productivity/undesirable outputs/SBM-DDF-GML/middle and lower reaches of the Yellow River分类
资源环境引用本文复制引用
崔思梦,操信春,吴梦洋,邹晨璐..水-能-粮关联视角下黄河中下游地区全要素生产率时空演变特征及驱动机制[J].农业工程学报,2026,42(9):331-339,9.基金项目
国家自然科学基金项目(52479038,52309049) （52479038,52309049）
江苏省自然科学基金项目(BK20230969) （BK20230969）
江苏省研究生科研与实践创新计划项目(KYCX24_0890) （KYCX24_0890）
