摘要
为保证长江经济带率先实现“双碳”目标,以2020年土地利用数据为基础数据,辅以各地类碳排放系数等相关社会经济数据,运用景观生态风险评价模型和空间自相关等方法,对长江经济带1070个县开展国土空间碳汇冲突研究,分析不同尺度视角下其碳汇测度和空间格局特征。研究表明:(1)长江经济带国土空间碳汇冲突结构整体处于失衡状态,稳定可控、基本可控、濒临失控、基本失控和严重失控等级评价单元数占比分别为2.71%、20.19%、35.23%、29.91%和11.96%;(2)长江经济带国土空间碳汇冲突具有显著的空间集聚性特征,冲突冷点区域集中分布在长江经济带西部方向,阿坝州-丽江-临沧-西双版纳地区和十堰-重庆-神农架-张家界地区。冲突热点区域主要为长江中游城市及下游沿海城市范围内的县级单元;(3)从市域尺度看,处于失控状态的城市集中连片,主要位于长江中下游城市圈,而长江中上游城市多处于可控状态;(4)从省域尺度看,长江经济带东部的江苏省、上海市、安徽省、浙江省处于失控状态,西部的四川省、贵州省和云南省处于可控状态,处于濒临失控状态的湖北省、江西省、湖南省、重庆市四省位于长江经济带中部,连接东部和西部地区,在空间上发挥重要的监管机制连接作用。
To maintain the leading role in achieving the"double carbon"target in the Yangtze River Economic Belt(YREB),this paper conducted a study on the conflict of national land and spatial carbon sinks of 1070 counties in the YREB.Land use data in 2020 and relevant socio-economic data such as the carbon emission coefficients of each category were collected.The ArcGIS and landscape ecological risk evaluation model was employed in this study.Measurement of carbon sinks and the spatial patterns under the perspectives of different scales was analyzed.Results showed that:(1)The overall structure of the spatial carbon sink conflict in the YREB was in an imbalance state.The ratios of the evaluation units were quantified as 2.71%,20.19%,35.23%,29.91%and 11.96%,respectively,for stable and controllable,basically controllable,on the verge of being out of control,basically out of control and seriously out of control grades;(2)The territorial spatial carbon sink conflict was characterized by significant spatial agglomeration.The conflict cold spot was centrally distributed in the western direction of the YREB,Aba-Lijiang-Lincang-Xishuangbanna region and Shiyan-Chongqing-Shennongjia-Zhangjiajie region.Conflict hotspot areas were mainly within the cities in the middle reaches of the Yangtze River and coastal areas in the lower reaches;(3)At the city scale,cities in a state of losing control were concentrated and contiguous,mainly within the urban circle of the middle and lower reaches of the Yangtze River,while cities in the middle and upper reaches of the Yangtze River were mostly in a controllable state;(4)At the provincial scale,eastern provinces of the YREB,including Jiangsu,Shanghai,Anhui,and Zhejiang,were in a state of losing control,while western provinces including Sichuan,Guizhou,and Yunnan were in a controllable state.The provinces at the verge of losing control,namely Hubei,Jiangxi,Hunan,and Chongqing,were located in the central part of the YREB,which connected the eastern and western regions and played an important role in spatial regulatory mechanisms.
作者
谢丽钧
杨萍
杨广斌
向娟
陈盼芳
王仁儒
杨丽
XIE Li-jun;YANG Ping;YANG Guang-bin;XIANG Juan;CHEN Pan-fang;WANG Ren-ru;YANG Li(College of Geography and Environmental Sciences,Guizhou Normal University,Guiyang 550025,China;Guizhou Key Laboratory of Remote Sensing Application for Mountain Resources and Environment,Guiyang 550025,China;Guizhou Surveying and Mapping Product Quality Supervision and Inspection Station,Guiyang 550025,China;Guizhou Second Surveying and Mapping Institute,Guiyang 550025,China;Guizhou First Surveying and Mapping Institute,Guiyang 550025,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2024年第11期2451-2460,共10页
Resources and Environment in the Yangtze Basin
基金
贵州省科技支撑项目(黔科合支撑[2023]一般175)
贵州省科技计划项目(黔科合重大专项[2022]001)
贵州省科技计划项目(黔科合支撑[2023]一般176)。
关键词
长江经济带
国土空间
碳汇
空间冲突
Yangtze River Economic Belt
national territory
carbon sink
spatial conflict