期刊：
Journal of Cleaner Production,2024年435:140388 ISSN：0959-6526
通讯作者：
Zhou, J;Zhang, WJ;Ning, XP
作者机构：
[Zhou, Ju; Zhou, J] Luoyang Normal Univ, Business Sch, Luoyang 471934, Peoples R China.;[Xu, Ning] Henan Normal Univ, Sch Polit Sci & Publ Adm, Xinxiang 453007, Peoples R China.;[Zhang, WJ; Zhang, Wenjie] Wuhan Polytech Univ, Sch Management, Wuhan 430048, Peoples R China.;[Ning, XP; Ning, Xueping] Shanghai Univ Int Business & Econ, Sch Int Business, Shanghai 201620, Peoples R China.
通讯机构：
[Zhang, WJ ] W;[Ning, XP ] S;[Zhou, J ] L;Luoyang Normal Univ, Business Sch, Luoyang 471934, Peoples R China.;Wuhan Polytech Univ, Sch Management, Wuhan 430048, Peoples R China.
关键词：
New-type urbanization pilot policy;Agricultural low-carbon development;Agricultural technological efficiency;Difference-in-differences model
摘要：
Advancing agricultural low -carbon development (ALCD) holds substantial real -world significance for the lowcarbon sustainable growth of the global economy. Traditional urbanization, focusing on the "one-way" concentration of elements in cities and pursuing urban expansion's scale and speed, poses a threat to ALCD. In contrast, new -type urbanization (NTU), which emphasizes a "two-way" concentration of elements in both rural and urban areas, provides an approach to address this issue. Nevertheless, no research has investigated the relationship between NTU, particularly the new -type urbanization pilot policy (NTUPP), and ALCD. To fill this void, this research employs panel data from 210 Chinese cities from 2006 to 2019, using a difference -indifferences (DID) model to investigate the impact and mechanisms of NTUPP on ALCD for the first time. The study reveals: (1) NTUPP significantly boosts the level of ALCD, with cities that have implemented NTUPP showing an average enhancement of 19.13% in ALCD levels compared to those without NTUPP. (2) NTUPP chiefly fosters ALCD by improving agricultural technological efficiency rather than advancing technological progress. (3) Relative to smaller cities, northern cities, eastern cities, resource -based cities, major grainproducing areas, cities with substantial government intervention, and cities with lower levels of financial development, NTUPP is more efficacious in enhancing ALCD in larger cities, southern cities, central and western cities, non -resource -based cities, non -major grain -producing areas, cities with minimal government intervention, and cities with advanced financial development. (4) NTUPP advances ALCD in local cities and boosts ALCD in neighboring cities via spatial spillover effects. This research aids the Chinese government in clarifying the implementation effects of the new -type urbanization pilot policy based on its findings, offering theoretical underpinnings and practical evidence for government departments in shaping and assessing the policy, and providing insights and evidence for other nations worldwide to advance sustainable agricultural development via enhanced urbanization efforts.
通讯机构：
[Mu, D ; Wang, C ] B;Beijing Jiaotong Univ, Sch Econ & Management, Beijing, Peoples R China.;Beijing Univ Technol, Coll Econ & Management, Beijing, Peoples R China.
关键词：
EV LIBs;Geopolitical disruptions;Supply chain network;Vulnerability assessment;Disruption ripple effect
摘要：
In the rapidly expanding global electric vehicle lithium -ion battery supply chain network (EV LIB SCN), intricate intercontinental and interrelated connections render it susceptible to geopolitical disturbances. The complex supplier-buyer dynamics within this network facilitate the propagation of disruptions, complicating the identification and evaluation of the consequences of geopolitical disruptions. Existing recommendations, grounded in macro -level material flow data, offer limited guidance for EV LIB -associated enterprises in managing such disruptions. To address this gap, this study constructs a meso-level EV LIB SCN incorporating realistic supplier-buyer relationship data among relevant firms. A supply chain network vulnerability (SCNV) index has been designed to quantify the disruption impact. Furthermore, a geopolitical disruption diffusion (GDD) model has been developed to simulate the disruption propagation in two distinct scenarios, i.e., single -region blockade and inter -region blockade. This study broadens the scope of EV LIB SCN investigations from macro- to meso-level analyses, and the evaluation of both direct and indirect impacts of geopolitical disruptions enhances comprehension of geopolitical disruption risks in global supply chain networks.
摘要：
The global fragmentation of supply networks results from outsourcing and offshoring strategies. Supply networks outsource segments to specialized suppliers, thereby leveraging their enhanced adaptability and reduced costs. These practices have produced intricate interdependence patterns, facilitating the spread of disruption risk. Although risk management provides extensive toolsets for addressing critical risks at the dyadic level, there has been a lack of emphasis on evaluating the efficacy of these tools in the context of complex global supply net-works. Research generally concentrates on the topological properties of global supply networks while largely ignoring the underlying risk propagation process in identifying critical risks. This paper develops a compre-hensive view of the supply network through detailed subtier mapping and a mathematical formulation that overcomes the limitations of the current approaches. The proposed formulation model incorporates the doing business environment of each country and reproduces the spread of disruption risks under three disruption risk scenarios in global supply networks. This paper illustrates the proposed formulation by analyzing the critical risks of global flat panel display supply networks. The results suggest that these networks are robust to random disruption but susceptible to target disruptions. Additionally, disruptions in European and Asian countries have detrimental effects on the overall operation of supply networks.
作者机构：
[Yang, Jun; Yang, Bin; Xiao, Jianying] China Univ Min & Technol, Sch Publ Policy & Management, Xuzhou 221008, Jiangsu, Peoples R China.;[Yang, Jun; Yang, Bin; Xiao, Jianying] China Univ Min & Technol, Res Ctr Transit Dev & Rural Revitalizat Resource B, Xuzhou 221116, Jiangsu, Peoples R China.;[Tan, Li] Wuhan Polytech Univ, Sch Management, Wuhan 430048, Peoples R China.
通讯机构：
[Jun Yang] S;School of Public Policy & Management, China University of Mining and Technology, Xuzhou, China<&wdkj&>Research Center for Transition Development and Rural Revitalization of Resource-Based Cities, China University of Mining and Technology, Xuzhou, China
关键词：
land use;utilization efficiency;coupling coordination;sustainable development;Urban Agglomeration in the Middle Reaches of the Yangtze River
摘要：
Land spaces function in capacities of urban development, agricultural production, and ecological conservation, among many others. Research of land space utilization efficiency (LSUE) and coupling coordination relationships among its subsystems are significant for sustainable land space development. In this study, taking the Urban Agglomeration in the Middle Reaches of the Yangtze River (UAMRYR) as the study area, we establish a measurement index system to evaluate the LSUE (2000-2018) and analyze its coupling coordination degree by utilizing an improved coupling coordination model. The main results include the following. (1) The average efficiency levels of urban space and agricultural space in the UAMRYR increased 2000-2018, while the average efficiency of ecological space declined. (2) The spatial pattern of the LSUE values varied greatly, with the distributions of high-efficiency and low-efficiency levels significantly different. (3) The coupling degree of LSUE includes three types, i.e., high-level coupling, break-in, and antagonism. Each coupling degree type was characterized by change over time. (4) The proportion of areas with high coupling coordination and moderate coupling coordination increased from 2000 to 2018, while the proportion of areas with basic coupling coordination, moderate imbalance, and serious imbalance declined during this period. Given that the spatial differentiation of the LSUE and its coupling coordination, it is necessary to implement a differential land space development strategy in the UAMRYR. This study is helpful to promote the efficient utilization and coordinated development of land space utilization systems.
