三明市区景观格局时空演变及生态网络构建研究

doi:10.19741/j.issn.1673-4831.2022.1013

Abstract

Abstract: The construction of the ecological network can help to make full use of the superior eco-environment of mountainous cities, restore the negative impact of rapid urbanization, and enhance regional ecosystem services and biodiversity. Taking the urban area of Sanming City as the research area, the changes of landscape pattern, ecological sources and ecological resistance surface in 2000, 2010 and 2020 were compared and analyzed. And the morphological spatial pattern analysis (MSPA), circuit theory, and gravity model were used to identify important ecological sources, build ecological corridors, and propose corresponding optimization strategies. The results show that: (1) From 2000 to 2020, the proportion of the core area all accounted for more than 50% of the total area of Sanming urban area, but showed a downward trend year by year. (2) 11 important ecological sources were identified, and 24 ecological corridors have been constructed. (3) Three types of eco-corridors was divided by the gravity model, including 2 first-level corridors, 5 second-level corridors, and 17 third-level corridors. (4) 22 stepping stones, 47 ecological pinch points, 54 obstacle points and 114 breaking points were identified. (5) The optimization strategies of restoring ecological breaking points, building stepping stones, protecting ecological pinch points, and removing ecological barrier points are proposed for the improvement of the stability of the ecological network and for enhancing the connectivity of regional landscapes. The results of this study can provide references for the construction of ecological network in mountainous cities.

Key words: urba area of Sanming City, landscape pattern, morphological spatial pattern analysis, circuit theory, gravity model, ecological network

CLC Number:

ZENG Zhen, AI Jing-wen, WANG Zi-ling, HE Tian-you, ZHENG Yu-shan. Research on the Spatial and Temporal Evolution of Landscape Pattern in Sanming Urban Area and the Construction of Ecological Network[J]. Journal of Ecology and Rural Environment, 2024, 40(3): 335-344.

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Research on the Spatial and Temporal Evolution of Landscape Pattern in Sanming Urban Area and the Construction of Ecological Network

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