评估城市蓝绿基础设施碳抵消的新视角:直接碳封存和间接碳减排
Hanxi Chen1, Lu Wang1, Yafei Wang1
1School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China.
Environmental science & technology
|July 11, 2024
概括
城市蓝绿基础设施 (BGI) 显著抵消碳排放. 2019年,大湾区的BGI提供了每年1.5 × 10 8 t·C的总碳抵消,突出了它在城市气候弹性方面的关键作用.
科学领域:
- 环境科学 环境科学
- 城市生态城市生态学
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 城市蓝绿基础设施 (BGI) 增强了城市的性和适应气候.
- 现有的研究缺乏全面分析BGI的总碳减排潜力,特别是其间接影响.
- 量化BGI的碳捕获和减少对于开发气候适应性城市至关重要.
研究的目的:
- 量化BGI在广东-香港-澳门大湾区 (GBA) 的直接碳捕获和间接碳减排.
- 通过空间分析识别具有显著碳抵消贡献和异常值的地区.
- 为城市管理政策提供参考,专注于碳抵消增强.
主要方法:
- 生态系统服务和权衡的综合估值 (InVEST) 模型.
- 遥感估计算法 遥感估计算法.
- 空间自相关性分析.
主要成果:
- 在2019年,GBA的BGI实现了1.5 × 10 t·C/yr的总碳抵消.
- 直接碳捕获占每年3.5×107t·C,抵消了GBA32%的二氧化碳排放.
- 间接的碳减排占11.0 × 10 7 t·C/年,减轻了49.9%的潜在碳排放.
结论:
- 在城市碳减排方面,BGI发挥着至关重要的作用,而间接影响尤其显著.
- 该研究强调了评估BGI的直接和间接碳减排效益的重要性.
- 调查结果支持针对性的BGI保护和恢复政策,以提高城市碳抵消能力.
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