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绿化改进场景用于评估城市碳汇和排放减少潜力
1Faculty of Environment and Resource Studies, Mahidol University, 999 Moo 5, Sai 4 Phuttamonthon Rd., Salaya, Phuttamonthon, Nakhon Pathom, 73170, Thailand. nuanchan.sin@mahidol.ac.th.
Scientific reports
|July 1, 2025
概括
泰国的城市绿化大大提高了二氧化碳吸收 (CO2abs) 和避免排放 (AR). 场景1显示持续的二氧化碳排放量增长,而场景2更早达到峰值,突出显示绿色空间改善对城市碳汇的影响.
科学领域:
- 环境科学 环境科学
- 城市林业城市林业
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 城市绿地在减轻气候变化影响方面发挥着至关重要的作用.
- 泰国的城市地区为加强碳捕获和水资源管理提供了机会.
- 之前对泰国城市绿色基础设施效益的评估是有限的.
研究的目的:
- 估计泰国改善的城市绿地中的二氧化碳吸收 (CO2abs) 和避免的排放 (AR).
- 预测城市绿化方案对环境服务的长期 (50年) 影响.
- 为了评估不同城市绿化战略在不同树木死亡率下的有效性.
主要方法:
- 使用i-Tree Eco软件开发两个场景 (SC1和SC2),用于改善城市绿地.
- 在50年预测期 (2024-2074) 中模拟CO2abs和AR.
- 在建模中包括不同的年度树木死亡率 (SC1的1%和SC2的3%).
主要成果:
- 在SC1中,二氧化碳总量显著增加,从2024年的0.32万公二氧化碳等价物 (Mmt-CO2e) 增加到2074年的9.24Mmt-CO2e.
- SC2预计2059年的CO2abs峰值为3.66Mmt-CO2e,随后由于死亡率较高而逐渐下降.
- 在SC1中观察到最大AR为76.07mm3,而SC2在2067年达到28.15mm3的峰值,这两种情景都显示出水流量显著减少.
结论:
- 泰国改善的城市绿地具有作为重要碳汇的巨大潜力.
- 战略绿化举措可以大大提高二氧化碳的吸收,减少城市的排放量.
- 长期收益对树木死亡率敏感,强调需要有效的城市森林管理.
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