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首页> 外文期刊>Journal of Cleaner Production >Impact of urbanization on the eco-efficiency of cultivated land utilization: A case study on the Yangtze River Economic Belt, China
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Impact of urbanization on the eco-efficiency of cultivated land utilization: A case study on the Yangtze River Economic Belt, China

机译：城市化对耕地利用生态效率的影响-以中国长江经济带为例

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Today, scholars and governments focus on the loss of cultivated land resources as a result of urbanization, but ignore urbanization's impact on the eco-efficiency of cultivated land utilization (ECLU), which causes the wastage of cultivated land resources and environmental pollution. Hence, this study systematically analyzes how urbanization influences the ECLU and proposes four of the former's effects on the latter: agglomeration, barrier, driving, and feedback effects. Further, it uses the System Generalized Method of Moments (GMM) and threshold models to estimate urbanization's impact on the ECLU. The estimation results of System GMM model reveal that agglomeration and barrier effects have a significant negative effect on the ECLU, with regression coefficients of -0.6725 and -0.0415, respectively. Contrarily, driving and feedback effects have a significant positive effect on the ECLU, with regression coefficients of 0.0274 and 0.1423, respectively. Further, the threshold analysis demonstrates that the barrier, driving, and feedback effects of urbanization have single threshold values of 20.7%, 22.8%, and 18.2%, respectively, whereas the agglomeration effect by itself has two threshold values of 18.3% and 49.5%. The study concludes that focusing only on the urbanization-related occupation of cultivated land while ignoring the urbanization's effects on the ECLU will jeopardize food security and the ecological environment. After considering the effects of different levels of urbanization on the ECLU, the government should formulate appropriate policies and measures to realize the sustainable utilization of cultivated land resources. (C) 2019 Elsevier Ltd. All rights reserved.
机译：如今，学者和政府关注的是城市化带来的耕地资源流失，却忽略了城市化对耕地利用的生态效率（ECLU）的影响，这造成了耕地资源的浪费和环境污染。因此，本研究系统地分析了城市化如何影响ECLU，并提出了前者对ECLU的四种影响：集聚，障碍，驱动和反馈效应。此外，它使用系统通用矩量法（GMM）和阈值模型来估计城市化对ECLU的影响。 System GMM模型的估计结果表明，集聚和屏障效应对ECLU有显着的负面影响，回归系数分别为-0.6725和-0.0415。相反，驱动和反馈效应对ECLU有显着的正效应，回归系数分别为0.0274和0.1423。此外，阈值分析表明，城市化的障碍，驱动和反馈效应的单个阈值分别为20.7％，22.8％和18.2％，而集聚效应本身具有两个阈值，分别为18.3％和49.5％。 。研究得出的结论是，仅关注与城市化有关的耕地占用，而忽略城市化对ECLU的影响，将会危害粮食安全和生态环境。考虑到城市化程度不同对ECLU的影响后，政府应制定适当的政策和措施，实现耕地资源的可持续利用。 （C）2019 Elsevier Ltd.保留所有权利。

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