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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Spatio-temporal changes and influencing factors of land use carbon emissions in Chaohu Lake Basin

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巢湖流域土地利用碳排放时空变化及影响因素研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Apr.2024, Vol.47 No.4: 433-440, 457

DOI: 10.3969/j.issn.1003-5060.2024.04.001

Authors

ZHAO Ping, SUN Yu, ZHAO Siyi, RUAN Xudong, CHANG Jie, ZHOU Jun

(School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: This paper was based on nighttime light data to estimate carbon emissions from land use in the Chaohu Lake Basin. It analyzed the spatio-temporal distribution characteristics and spatial correlations of land use carbon emissions at the county level, investigating the mechanisms of influencing factors. The results indicated that from 2012 to 2018, land use features in Chaohu Lake Basin were significant, primarily dominated by cultivated land, followed by construction land and forest land, with limited water bodies, grassland, and unused land. During the same period, carbon sources in Chaohu Lake Basin were mainly concentrated in the urban area of Hefei City, Feidong County, and Feixi County, while carbon sinks were mainly concentrated in Shucheng County, Chaohu City, and Lujiang County. Overall, net carbon emissions from land use showed an increasing trend, and there was a significant positive spatial correlation. Regional investments, economic development, population size, and land use structure had a substantial impact on land use carbon emissions in Chaohu Lake Basin, with the interactive effects of paired factors exceeding those of individual indicators. The research findings can provide references for formulating rational regional carbon emission optimization strategies.

Keywords: land use carbon emissions; nighttime light remote sensing; spatio-temporal changes; influencing factors; Chaohu Lake Basin

作者信息

赵萍，孙雨，赵思逸，阮旭东，常杰，周俊

（合肥工业大学资源与环境工程学院，安徽合肥 230009）

摘要和关键词

摘要: 文章基于夜间灯光数据估测巢湖流域土地利用碳排放量,从县域尺度上分析土地利用碳排放时空分布特征及空间相关性,探究其影响因素作用机理。结果表明:2012—2018年,巢湖流域土地利用特征较为显著,主要以耕地为主,建设用地和林地次之,水域、草地和未利用地较少;2012—2018年,巢湖流域碳源主要集中于合肥市区、肥东县和肥西县,碳汇主要集中于舒城县、巢湖市和庐江县,土地利用净碳排放总体呈增长趋势,且存在着显著的空间正相关关系;区域投资、经济发展、人口规模和土地利用结构对巢湖流域土地利用碳排放都有较大影响,且双因子交互作用均超过单个指标影响。研究结果可为制定合理的区域碳排放优化方案提供参考。

关键词: 土地利用碳排放；夜间灯光遥感；时空变化；影响因素；巢湖流域

Funding

国家自然科学基金资助项目（42271417）

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