Статья

Habitat connectivity evolution and management strategies under the dual drivers of urban expansion and renewal: A case study of nanning, China

Jiping WangInstitute of Ecological Protection and Restoration, Chinese Academy of Forestry, Beijing, 100091, ChinaXuebing JiangSchool of Mathematics and Information Science, Guangxi University, Nanning, 530004, ChinaYongfa YouVirginia Polytechnic Institute and State University, USAShihui ChangGuangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Key Laboratory of National Forestry and Grassland Administration on Cultivation of Fast-Growing Timber in Central South China, College of Forestry, Guangxi University, Nanning, 530004, ChinaKai SuGuangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Key Laboratory of National Forestry and Grassland Administration on Cultivation of Fast-Growing Timber in Central South China, College of Forestry, Guangxi University, Nanning, 530004, China

Environmental and Sustainability Indicatorsjournal2025en

ABI

Аннотация

With accelerated urbanization, both urban expansion and renewal have significantly affected habitat connectivity and stability. Focusing on Nanning's main urban area, this study used landscape pattern and complex network methods to evaluate habitat connectivity under different urban development scenarios. Results show that urban expansion—mainly converting unused suburban land into construction land—fragmented large habitat patches. Although ecological corridors increased by 211, overall connectivity decreased by 1 %, and potential connectivity declined by 16 %, considerably weakening ecosystem stability. In contrast, urban renewal—redeveloping old residential areas—added 7.21 km 2 of green space and 213 ecological corridors, increasing overall connectivity by 1 % and potential connectivity by 18 %. This effectively offset connectivity loss from expansion, though compensation was unequal: approximately 2 units of renewed area were needed to counteract 1 unit of expanded area. The study identified 49 key ecological priority areas totaling 55.18 km 2 , whose degradation would severely impact the regional ecological network. Under combined expansion and renewal, the ecological network showed "overall weakening but local enhancement" in topology, with improved local robustness but reduced overall stability. Scientifically identifying and hierarchically managing priority conservation and restoration areas are crucial for enhancing urban ecosystem stability and services. These findings offer insights for ecological space optimization and spatial planning in Nanning and other fast-urbanizing regions. • Urban expansion weakens habitat connectivity; renewal enhances it via green corridors. • Expansion causes fragmentation; renewal boosts network stability with green spaces. • Identifies 49 key ecological zones for protection and restoration strategies. • Reveals synergies/trade-offs between expansion/renewal for ecosystem management.

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Темы

Wildlife-Road Interactions and Conservation Land Use and Ecosystem Services Urban Green Space and Health

Идентификаторы

DOI: 10.1016/j.indic.2025.101062

Цитирования и источники

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Показатели — AkademScholar · Скоро