“DEPSIR-LM” Model-based Study on Shaping of the Eco-security Pattern for Biodiversity — A Case Study of Guangzhou

Ya-Nan Xiang, Huang-Gen Gao, He Huang, Bo Yue, Dan Wang

Ekoloji, 2018, Issue 106, Pages: 203-216, Article No: e106016


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High-intensity human socio-economic activities pose a great threat to the ecological environment, thus resulting in the decline of biodiversity in ecologically fragile areas and serious problems over regional eco-security. The regional scale provides a reasonable spatial context for exploring the eco-security of mega-cities or metropolitan areas. However, the existing research lacks a comprehensive understanding of the influencing factors for biodiversity at a regional scale. Therefore, the study on landscape ecological planning represented by the theory of eco-security patterns has become increasingly significant. In this study, the “DPSIR-LM” model at a regional scale is adopted to analyze the positive and negative factors that affect the eco-security of Guangzhou’s biodiversity, and obtain the spatial differentiation result of the eco-security assessment on Guangzhou’s biodiversity. In terms of the conservation of Guangzhou’s biodiversity, an innovative approach is taken to integrate ecological assessment into the construction of the eco-security pattern, so as to propose a novel method to construct the eco-security pattern. First, a holistic study on the urban eco-security pattern is conducted and the eco-security pattern of Guangzhou’s biodiversity is established from the perspectives of government decision-making, socio-economic indicators and data, as well as the science and technology level. Then, the main geographical distribution and its causes are further analyzed to provide a corresponding protection strategy for each security pattern, contributing to the ecological space planning of Guangzhou’s biodiversity conservation. The “DPSIR-LM” model given in this paper enhances the assessment of the positive and negative influences on biodiversity by quantifying the inner differences of the region, and it is more accurate and scientific in source selection, resistance evaluation and result optimization for the pattern construction. The research provides a valuable reference for the study and construction of eco-security patterns at a regional scale.


biodiversity, eco-security assessment, construction of the eco-security pattern, the “DPSIR-LM” model


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