The massive emission of greenhouse gases has led to an increasing trend of global warming,seriously threatening the health and well-being of cities and their inhabitants.The urban blue-green system is one of the important means to adapt to and mitigate climate change sequester carbon and increase sinks.In this paper,we take the central city of Chengdu as an example,based on the land use data,use the InVEST carbon stock model and ArcGIS spatial visualization and analysis tools to evaluate and partition the carbon stock in the urban blue-green system,and the results found that:the spatial distribution of the total carbon stock in the study area shows the characteristics of low in the center and high in the surroundings.The low Carbon Sequestration Area is concentrated in the middle of the study area and accounts for the largest proportion,the Potential Carbon Sequestration Area is distributed along the ecological belt around the city,and the High Carbon Sequestration Area is sporadically distributed in the east side of the study area.According to the different carbon storage areas,we propose targeted carbon storage optimization strategies:High Carbon Carbon Sequestration Areas should prioritize the protection of existing blue-green spaces;Potential Carbon Sequestration Areas can adjust and restore existing blue-green spaces;Low Carbon Carbon Sequestration Areas need to improve and manage blue-green spaces.
Blue-green spaceCarbon stockCarbon sequestrationInVEST Model
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