南昌市土地利用碳收支时空分异及碳平衡分区  

Spatial and Temporal Variability of Land-use Carbon Balance in Nanchang and Zoning of Carbon Balance

作　　者：叶长盛[1] 汪礼丽 蔡鑫 YE Changsheng;WANG Lii;CAI Xin(School of Earth Sciences,East China University of Technology,Nanchang 330013,Jiangxi,China)

机构地区：[1]东华理工大学地球科学学院,江西南昌330013

出　　处：《国土资源科技管理》2024年第4期46-60,共15页Scientific and Technological Management of Land and Resources

基　　金：国家自然科学基金项目(42061041)。

摘　　要：本文基于土地利用碳源碳汇核算方法,计算了南昌市2000—2020年碳收支量,利用基尼系数、熵权-TOPSIS、耦合协调度距离模型等方法分析其空间碳平衡贴近度,构建碳平衡分区评价体系,并引用三维魔方单元模型探讨南昌市碳平衡分区。结果表明:(1)2000—2020年,南昌市碳收支量整体呈现上升状态。碳排放高值区环主城呈反“C”型分布,碳汇呈现出以西湖区、东湖区为低值中心,向外逐步增加的外围—核心结构。(2)在分异格局上,碳源、碳汇均呈现西北—东南主导方向,空间分布重心稳定,且存在普遍的碳排放关联关系。(3)2000—2020年南昌市各县区的碳源碳汇处于高度不协调状态,两者耦合协调性较差,存在失衡状况。(4)基于碳平衡分析,将南昌市9个县区分为碳强度控制区、低碳优化区、碳收支平衡区,旨在因地制宜为南昌市各县区制定协同减排的土地利用政策,以及制定更加精准和可行的减碳增效方案提供科学的支撑。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.

关 键 词：土地利用 碳收支 南昌市 碳平衡分区 

分 类 号：X321[环境科学与工程—环境工程] F301.2[经济管理—产业经济]