摘要
本文采用清单法定量核算国土空间各类土地利用活动的碳源、碳汇和净碳排放量,利用MATLAB的图形用户界面(GUI)开发国土空间碳排放核算系统,并应用该系统对南昌市国土空间碳排放效应进行实例研究。研究结果表明:南昌市耕地所占的比重最大,土地利用变化的主要类型为耕地和建设用地;南昌市土地利用净碳排放量呈逐年增长趋势,从2000年的1792.32×10^(4)t增加到2020年的4397.72×10^(4)t,年均增加130.27×10^(4)t,建设用地是最主要的碳源,林地的碳汇效应最大。
This study firstly accounted the carbon source,carbon sink and net carbon emission of various land use activities using the inventory method.Then,the territorial space carbon emission accounting system was developed by using the graphical user interface(GUI)of MATLAB and implicated to analyze the land use carbon emissions in Nanchang City.The results showed as follows:The proportion of cultivated land is the largest in Nanchang City,and the main types of land use change are cultivated land and construction land.The net carbon emission of land use in Nanchang City showed an increasing trend year by year,from 1792.32×10^(4)t in 2000 to 4397.72×10^(4)t in 2020,with an average annual increase of 130.27×10^(4) t.The contribution of construction land to carbon source is the largest,and the contribution of forest land to carbon sink is the largest.
基金
浙江省教育厅科研项目“‘碳达峰、碳中和’目标下国土空间碳排放核算系统设计与应用研究”(Y202250661)。
关键词
土地利用
碳排放
核算系统
清单算法
南昌市
land use
carbon emission
accounting system
inventory method
Nanchang City
