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1 Sijing, X.; Gang, L.; Biao, M. 2023. Vulnerability analysis of land ecosystem considering ecological cost and value: a complex network approach. Ecological Indicators, 147:109941. [doi: https://doi.org/10.1016/j.ecolind.2023.109941]
Land transfers ; Ecosystems ; Networks ; Vulnerability ; Economic development ; Land use change ; Vulnerability ; Land resources ; Resilience ; Dry lands ; Landscape ; Urbanization ; Ecological factors ; Environmental factors / China / Sichuan / Pidu / Chengdu
(Location: IWMI HQ Call no: e-copy only Record No: H051715)
https://www.sciencedirect.com/science/article/pii/S1470160X23000833/pdfft?md5=1cad77de32fb5b46ba9ca7a7848df845&pid=1-s2.0-S1470160X23000833-main.pdf
https://vlibrary.iwmi.org/pdf/H051715.pdf
https://vlibrary.iwmi.org/pdf/H051715.pdf
(3.23 MB) (3.23 MB)
The urban–rural fringe is the most sensitive area in the process of urban expansion and rural revitalization. It is important to study the complex coupling relationship between economic development and ecological protection in the urban–rural fringe from a holistic and dynamic perspective. The complex network theory is utilized in this study to analyze how land use change (LUC) affects ecosystems' structural and functional vulnerabilities. From the perspective of network modeling and analysis, the network eco-efficiency indicator for the vulnerability analysis of the land transfer network is defined considering the ecological cost and value in this study. Based on this, we propose a method for analyzing the vulnerability of the functioning of land ecosystem. In order to testify the effectiveness of the method, this study takes the southeastern corner of the Pidu District of Chengdu as the research object. The result shows: (1) Under the combined effect of urban expansion and rural revitalization, the utilization of land resources in the region is relatively poor, the development of urbanization is slow, and the rural ecological environment has not been improved; (2) The ecological land is the transfer-out type, the artificial land is the transfer-in type. Grassland is the primary key land type that is essential to the network's connectivity but also the most at risk to attack. Although the stability of the land ecosystem is not great, it is generally progressing in a stable direction; (3) To maintain the resilience of the land ecosystem and alleviate the vulnerability, at least 85% of the dryland and 45% of the urban residential land need to be protected; (4) A 20% increase of dryland and paddy is positive to enhancing the resilience of the ecosystem and reducing the negative impact on the ecosystem in the process of land use transition. The research results can provide a reference for the coordinated development of “land-economy-ecology” in the urban–rural fringe.
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