摘要：
Complex dynamic interactions exist between urbanization and sustainable urban development, and clarifying the collaborative relationship and interactive response mechanism between the two systems is key to ensuring high-quality urban development. Taking Yangtze River Delta as a typical case, dynamic coordinated and interactive response relationships between urbanization and sustainable urban development were measured using a multi-index comprehensive evaluation method, grey correlation analysis, and panel-data vector autoregressive (PVAR) model. The results indicate that: (a) a high urbanization level and significant polarization characteristics of regional central cities alongside low economic development in more peripheral cities and insufficient attraction to factors including population, capital, and technology, which widens their development gap with regional central cities; (b) a significant increasing trend in sustainable urban development, coupled with a spatiotemporal evolution trend of urbanization; (c) bidirectional Granger causal relationship between urbanization and sustainable urban development, with the PVAR model results indicating a positive interactive response relationship, which has certain path-dependent characteristics and an inertial development trend; and (d) in the long run, urbanization has a greater impact on changes in sustainable urban development than vice versa.
作者机构：
[Qiaoqi Lu; Pingping Zhang] College of Public Administration, Central China Normal University, Wuhan 430079, China;Author to whom correspondence should be addressed.;[Mingjie Song] College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Mingjie Song] C;College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
core conservation areas;ecological corridors;minimum resistance model;mountainous areas
摘要：
When focusing on biodiversity maintenance, ecological security pattern (ESP) planning gradually becomes a multi-objective planning strategy for sustainable development; wildlife conservation and ecosystem health maintenance should be balanced with local economic development and people’s livelihood enhancement goals. This study focuses on ESP mapping in the Qinling-Daba Mountain area, which is an ecologically significant and socioeconomically underdeveloped area. The tradeoff between conservation and development is made by varying the area of ecological sources and incorporating ecosystem service tradeoffs into ecological source identification through multi-scenario designation. ESPs under six scenarios were generated based on the minimum resistance model, and the important ecological corridors and strategic points in each scenario were identified and compared. The results show the following: (1) The scenario that sets around 30 percent of the study area as ecological sources maintains the integrity of natural ecosystems and leaves space for food and material supply to residents. (2) In this scenario, the ecological sources are connected by 60 corridors that cross 137 townships with high population densities (>100 people/km2) and intersect with major traffic lines at 71 points. Engineering, management, or education strategies must be taken in these townships or intersections to avoid human–wildlife conflicts. (3) The study area needs to construct both short (north–south) corridors linking proximate ecological sources for species’ daily movement and long (west–east) corridors connecting large and distant sources for species’ seasonal migration and gene flow. (4) The multi-scenario approach turns out to be an effective strategy for ESP planning with considerations for development–conservation tradeoffs.
作者机构：
[Shi, Yangyang; Li, Xinle] Wuhan Univ, Sch Foreign Languages & Literature, Wuhan 430072, Peoples R China.;[Luo, Xiang; Luo, X; Li, Xin] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.
通讯机构：
[Luo, X ] C;Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.
关键词：
low-carbon pilot policy;land green use efficiency;difference-in-differences model
摘要：
In the context of global climate change, the low-carbon city pilot policy has become an important strategy to promote green development. Based on the panel data from 257 prefecture-level and above cities in China, this study utilized the Super-Efficiency SBM (Slacks-Based Measure) to measure the land green use efficiency and analyzes the impact of the policy on adjacent non-pilot cities using a difference-in-differences model. The findings indicate that the implementation of low-carbon pilot policies can significantly improve the land green use efficiency in adjacent non-pilot cities, which can be primarily ascribed to the spillover effect and catfish effect. A heterogeneity analysis further revealed the positive effects of the policies in the eastern region and non-resource-based cities. This study provides valuable references for relevant legal provisions on environmental regulation and for continuously monitoring and evaluating the policy effects to achieve sustainable development goals.
摘要：
Understanding the formation process and pattern of production-living-ecological spaces (PLES) is crucial for sustainable land-use management and adaptive city governance. However, previous studies have neglected the symbiotic relationships between land-use functions (LUFs) in identifying and optimizing PLES. To address this gap, this paper proposes a technical framework for assessing PLES from a LUF symbiosis perspective. A case study was conducted in Xiangyang City, China, to identify PLES and analyze its urban-rural differentiation using the symbiosis degree model and landscape pattern indices. Our findings revealed that the symbiotic relationships between LUFs varied. There were 25 combination types of PLES in Xiangyang City, with significantly varied area proportions and spatial distribution. The landscape types and fragmentation of PLES increased along with the gradient change from the old urban area to the rural area. Furthermore, we proposed a PLES optimization strategy involving LUFs symbiosis and the urban-rural gradient. Our study enriches the dimensions of PLES assessment and supports better-coordinated planning and the protection of PLES.
