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Spatial-Temporal Dynamics of Carbon Budgets and Carbon Balance Zoning: A Case Study of the Middle Reaches of the Yangtze River Urban Agglomerations, China

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  • Yiqi Fan

    (School of Public Administration, China University of Geosciences, Wuhan 430074, China
    Key Laboratory of Law and Government, Ministry of Natural Resources of China, Wuhan 430074, China)

  • Ying Wang

    (School of Public Administration, China University of Geosciences, Wuhan 430074, China
    Key Laboratory of Law and Government, Ministry of Natural Resources of China, Wuhan 430074, China)

  • Rumei Han

    (School of Public Administration, China University of Geosciences, Wuhan 430074, China)

  • Xiaoqin Li

    (School of Public Administration, China University of Geosciences, Wuhan 430074, China)

Abstract

Analysis of the spatial variation characteristics of regional carbon sources/sinks is a prerequisite for clarifying the position of carbon balance zones and formulating measures to reduce emissions and increase sinks. Studies of carbon sinks have often used the coefficient method, which is limited by sample size, measurement error, and low spatial resolution. In this study, 31 cities in the middle reaches of the Yangtze River urban agglomerations (MRYRUA) were studied with the improved CASA (Carnegie Ames Stanford Approach) model to estimate the grid-scale net ecosystem productivity (NEP) and explore the spatial-temporal evolution of carbon budgets from 2005 to 2020. By calculating the carbon balance index (CBI), economic contribution coefficient (ECC), and ecological support coefficient (ESC), carbon balance zoning was conducted. Corresponding suggestions are based on the carbon balance zoning results. From 2005 to 2020, carbon budgets increased and were high in the north-central region and low in the south. In addition, carbon sink functional zones were distributed in cities with rich ecological resources. Low-carbon economic zones shifted from the Poyang Lake Urban Agglomeration to the Wuhan City Circle; low-carbon optimization zones occurred from the Wuhan City Circle to the Poyang Lake Urban Agglomeration. Carbon intensity control and high-carbon optimization zones were distributed in cities with rapid economic development. Our results support the MRYRUA in achieving “double carbon” targets and formulating regional collaborative emissions reduction policies.

Suggested Citation

  • Yiqi Fan & Ying Wang & Rumei Han & Xiaoqin Li, 2024. "Spatial-Temporal Dynamics of Carbon Budgets and Carbon Balance Zoning: A Case Study of the Middle Reaches of the Yangtze River Urban Agglomerations, China," Land, MDPI, vol. 13(3), pages 1-20, February.
  • Handle: RePEc:gam:jlands:v:13:y:2024:i:3:p:297-:d:1346789
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    References listed on IDEAS

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