摘要
以长三角为例,基于碳排放空间化模型,在格网尺度下量化分析路网密度与城市群碳排放的时空响应特征,利用耦合协调模型分析区域路网密度与碳排放的耦合协调特征.结果表明:在时空特征上,碳源主要为沿湖沿江的都市功能发达区,碳汇主要为长江、新安江水域及南部林地区,整体呈现碳排放逐渐分散化的趋势;在响应特征上,单位面积碳排放与路网密度呈明显的正相关,人均碳排放与路网密度呈倒U型曲线关系;在耦合特征上,耦合度和耦合协调度均上升,呈现高值区以各大城市地区为中心向周边扩张的发展态势.
Taking the Yangtze River Delta as an example,the spatial-temporal response features of road network density and carbon emission of urban agglomerations at the grid scale is analysed based on the carbon emission spatialization model,and the coupled coordination characteristics of regional road network density and carbon emissions are analysed using the coupled coordination model.The results show that,in terms of spatial-temporal characteristics,carbon sources are mainly developed urban areas along lakes and rivers,and carbon sinks are mainly the waters of the Yangtze River and Xin′an River as well as southern forest areas.Overall,there is a trend of gradual dispersion of carbon emission.In terms of response characteristics,there is a significant positive correlation between ground average carbon emissions and road network density,and an inverted U-shaped relationship between per capita carbon emissions and road network density.In terms of couplingcharacteristics,the degrees of coupling and coupling coordination both increase.It shows a development trend of high-value areas expanding to the surrounding areas centered on each major urban area.
作者
陈燕
周镇宇
蒋有君
索心睿
宋新山
王宇晖
CHEN Yan;ZHOU Zhenyu;JIANG Youjun;SUO Xinrui;SONG Xinshan;WANG Yuhui(School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Key Laboratory of Watershed Geography,Chinese Academy of Sciences,Nanjing 210008,China)
出处
《华侨大学学报（自然科学版）》
CAS
2023年第4期485-494,共10页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(41471089)
中国科学院流域地理学重点实验室开放基金资助项目(WSGS2020006)
国家重点研发计划项目(2021YFC3000102)。
关键词
路网密度
碳排放
耦合协调
长三角
road network density
carbon emission
coupling coordination
Yangtze River Delta
