摘要
基于1995—2020年卫星遥感数据,对中国江西省土地利用类型的年际变化进行了解译,结合能源消费数据,采用碳排放系数法估算全省的碳排放量和吸收量,利用碳足迹和碳生态承载力方法评估区域内的碳排放效应。研究表明:1)江西省1995—2020年土地利用变化类型中除城乡建设用地面积显著增加,其他用地类型变化幅度较小;2)江西省净碳排放量呈显著增长趋势,研究末期较研究初期增长近3倍,城乡建设用地面积每增加1 km^(2)就会增加1.308 t的碳源,而每增加1 km^(2)的林地仅会增加0.006 t的碳汇,江西中部及南部地区净碳排量少于北部地区;3)江西省碳足迹增长迅速,碳生态承载力变化缓慢,导致生态赤字明显增加,江西南部及中部地区生态赤字效应略轻于北部地区。
This study is based on satellite dataset from 1995 to 2020 to interpret the annual land use and cover change in Jiangxi Province of China,and analyzed the changes of carbon sources/sinks,and carbon emissions based on land use types and energy consumption data the carbon emission coefficient method,and the carbon emission effects were evaluated using carbon footprint and ecological carbon carrying capacity.The results showed that:1)The land use change types in Jiangxi Province from 1995 to 2020 showed a significant increase in the area of urban and rural construction land,while the changes in other land use types were relatively small;2)The net carbon emissions in Jiangxi Province show a significant growth trend,with a nearly three fold increase in the late stage compared to the early stage of the study.For every 1 km^(2) increase in urban and rural construction land area,1.308 tons of carbon sources will be added,while for every 1 km^(2) increase in forest land,only 0.006 tons of carbon sinks will be added.The net carbon emissions in central and southern Jiangxi are lower than those in northern Jiangxi;3)The carbon footprint of Jiangxi Province is growing rapidly,and the change in carbon ecological carrying capacity is slow,leading to a significant increase in ecological deficit.The ecological deficit effect in southern and central Jiangxi is slightly lighter than that in northern Jiangxi.This study reveals the impact of changes in land use patterns on carbon emissions in Jiangxi Province,and provides some useful reference for nationwide carbon reduction and ecological protection.
作者
戴芳筠
占明锦
桂晗亮
李柏贞
周媛
陈燕玲
唐春燕
Dai Fangyun;Zhan Mingjin;Gui Hanliang;Li Bozhen;Zhou Yuan;Chen Yanling;Tang Chunyan(Jiangxi Ecological Meteorology Center,Nanchang 330096,China;Nanchang National Climate Observatory,Nanchang 330043,China;Jiangxi Vocational and Technical College of Information Application,Nanchang 330000,China;School of Geography and Planning,Sun Yat-Sen University,Guangzhou 510275,China)
出处
《气象与减灾研究》
2024年第2期121-128,共8页
Meteorology and Disaster Reduction Research
基金
江西省自然基金(编号:20202BABL203036)
江西省气象局南昌国家气候观象台专项重点项目
江西省气象局重点项目(编号:JX2022Z03).
关键词
土地利用
碳排放系数
碳源/汇
碳排放效应
江西省
land use and cover change
carbon emission coefficient
carbon source/sink
carbon emission effect
Jiangxi Province
