Spatial and Temporal Variability of Land-use Carbon Balance in Nanchang and Zoning of Carbon Balance
Based on the accounting method of land use carbon source and sink,we calculated the carbon income and expenditure of Nanchang City from 2000 to 2020,analyzed its spatial carbon balance proximity by using the Gini coefficient,entropy weight-TOPSIS,and the coupled coordination degree distance model,constructed the evaluation system of carbon balance zoning,and cited the three-dimensional Rubik's cube unit model to explore the carbon balance zoning of Nanchang City.The results show that:(1)From 2000 to 2020,the carbon balance of Nanchang City shows an overall increase.The high-value carbon emission area is distributed in an inverse"C"shape around the main city,and the carbon sink shows a"periphery-core"structure with the West Lake and East Lake areas as the low value centers,which is gradually increasing outwards.(2)In the pattern of differentiation,carbon sources,and sinks show the dominant direction of northwest-southeast,the center of gravity of spatial distribution is stable,and there is a general correlation between carbon emissions.(3)Carbon sources and sinks in Nanchang counties and districts from 2000 to 2020 are highly uncoordinated,with poor coordination and imbalance between the two couplings.(4)Based on the carbon balance analysis,the nine counties and districts of Nanchang are divided into carbon intensity control area,low carbon optimization area,and carbon balance area,which aims to provide scientific support for the counties and districts of Nanchang to formulate more locally adapted and synergistic emission reduction land-use policies,as well as to develop more accurate and feasible"carbon reduction and efficiency"strategies.
land usecarbon balanceNanchang Citycarbon balance zoning
NETL
NSTL
万方数据
