ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Geoscience and Society
Volume 13 - 2025 | doi: 10.3389/feart.2025.1615573
Multiscale coupling coordination analysis and spatial heterogeneity between Blue-green space landscape stability and environmental pressures in Nanchang, Jiangxi Province, China
Provisionally accepted
Mingming Duan1,2*
Dan Luo3- 1Hezhou University, Hezhou, China
- 2Jiangxi Agricultural University, Nanchang, Jiangxi, China
- 3Guangdong Technology College, Zhaoqing, China
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Understanding the interaction between blue-green space stability (BGSS) and environmental pressures (EPs) is critical for urban ecological resilience. This study developed blue-green space stability index (BGSSI) and environmental pressure indexes (EPIs) to explore their coupling coordination and spatial heterogeneity across four spatial scales (1 km, 5 km, 10 km grids, and administrative districts) in Nanchang City, China. We integrated local bivariate Moran's I, spatial regression, and a Coupling Coordination Degree Model (CCDM) to evaluate their spatial relationships. Results show that: (1) The distribution of EPIs and BGSSI exhibits spatial heterogeneity, with high pressure and low stability in the central part of the city, while in contrast, mountainous and forest areas in the suburbs had low pressure and high stability. (2) The spatial clustering results of EPIs and BGSSI indicated that the blue space represents low-low clusters as ecologically sensitive areas, the middle of the city rep-resented high-low clusters as ecologically dangerous areas, and the green space represented low-high clusters as important ecological protection areas. The spatial regression indicated that EPIs were negatively correlated with BGSSI, and spatial autocorrelation and spatial spill-over effects were observed between them, economic and population pressures have lower coefficients than other factors. (3) EPIs and BGSSI exhibited 3 stages and 9 types of coordi-nated coupling relationships. As the grid expands, the proportion of Running-in stage (RS) 2 of 30 increases, while the proportion of Coordination stage (CS) decreases. Our multiscale analysis reveals the bidirectional, scale-sensitive nature of EPs–BGSS interactions and provides a methodological framework to guide differentiated ecological planning and spatial governance.
Keywords: Blue-green space, blue-green space stability, Environmental pressures, couplingcoordination model, spatial correlation, Multiscale
Received: 21 Apr 2025; Accepted: 28 Aug 2025.
Copyright: © 2025 Duan and Luo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Mingming Duan, Hezhou University, Hezhou, China
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