Optimization of Urban Green Infrastructure Network Based on MSPA-Habitat Quality Assessment and Circuit Theory:Case of Shenzhen
Green infrastructure is crucial in mitigating ecological environmental problems,ensuring the safety of human settlements,and promoting sustainable development.With Shenzhen as the study area,ecological source patches were identified through the morphological spatial pattern analysis(MSPA)and habitat quality assessment using the InVEST model.Then,the circuit theory was applied to extract ecological corridors and identify ecological pinch points and obstacles.Based on the spatial characteristics of these patches,corridors and pinch points,an urban green infrastructure network was constructed,and optimization strategies for this network were proposed.The findings indicate that the UGI network in Shenzhen encompasses 56 ecological source patches,79 ecological corridors,71.69 km2 of ecological pinch points,and 180.12 km2 of ecological obstacles.These ecological source patches are concentrated in regions with high ecological quality,such as mountains and forests in the southeast,central,and western parts of the city.Ecological corridors are mainly located in the central,western,and northeastern regions.Ecological pinch points,which are prevalent among ecological patches,are primarily distributed in the central,southwestern,and northeastern areas.Most of the ecological obstacles are located along the periphery of ecological source patches or within ecological corridors,mainly in the southwestern,central,and northeastern areas.From three aspects,the protection and quality improvement of ecological patches,corridors,and pinch points,the restoration of ecological obstacle points,and the prioritization of areas for ecological restoration,optimization strategies for Shenzhen's urban green infrastructure network are proposed.This research provides methodological support and practical guidance for the optimization of urban green infrastructure network in Shenzhen.
landscape architectureurban green infrastructure networkmorphological spatial pattern analysishabitat quality assessmentcircuit theory
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