Assoc. Prof. I-Chun Chen
Department of Land Resources, Chinese Culture UniversitySpeech Title: Climate Adaptation Strategies from the Perspective of Carbon Sequestration using Spatial Heterogeneity Analysis of Urban Land Use
Abstract: Amidst the severe challenges of global urbanization and climate change, urban land-use transitions have exacerbated carbon emissions and caused severe fragmentation of green spaces critical for carbon storage. Re-evaluating the carbon sequestration potential of urban land through the lens of spatial heterogeneity is essential for implementing effective urban climate adaptation strategies. Using a urban experiencing rapid land-use change as an empirical studied area, this research systematically evaluates the spatial distribution of carbon emissions and carbon storage across different land-use categories by referencing the IPCC Guidance. The methodology employs global spatial autocorrelation analysis (Moran's I) to quantify and visualize carbon management under the spatial competition of land use during the urbanization process. The results indicate that high-emission traffic and residential lands exhibit significant spatial clustering, whereas agricultural and forest lands, which possess excellent carbon sequestration benefits, face severe land fragmentation and marginalization. Furthermore, based on the Food and Agriculture Organization's (FAO) Sustainable Soil Management (SSM) analytical framework, this study figures out that soils with good nutrient retention retain substantial carbon storage potential even under intense anthropogenic disturbance. Notably, in the northern areas of the analyzed area, implementing the SSM1 land management scenario with a 5% carbon input can yield a maximum soil carbon storage potential reaching 193.26 to 117.63 tC/ha. These results emphasize that urban planning in this region must re-evaluate appropriate land-use allocation, ensuring that cities heavily impacted by rapid greenhouse gas emissions maintain their climate adaptive capacity.