| Summary: | The functional structure of territorial space is an important factor affecting the regional carbon cycle. The article explores the interaction mechanism between the functional structure of territorial space and carbon sources and carbon sinks, constructs a model for measuring and calculating territorial spatial carbon sources and carbon sinks, and investigates land changes in Sichuan Province, etc. Based on the data, the spatial carbon emission and absorption of Sichuan from 2010 to 2017 were calculated, and the carbon source carbon aggregate amount, structural composition and intensity change trend were analysed. The results show that changes in the spatial land use structure of Sichuan are closely related to carbon emissions, and the increase in construction land is the main reason for the substantial increase in carbon emissions. Finally, in combination with the vision and goals of "carbon neutrality", relevant optimization suggestions were put forward for the land and space planning of Sichuan Province.
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