湖泊对全球温室气体排放的贡献:机制,量化和缓解策略
Weiqiao Wang1, Xin Sun1, Xue Zhu2
1School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 13 Yanta Road, Xi'an, 710055, China.
Journal of environmental management
|January 10, 2026
概括
湖泊是温室气体 (GHG) 的重要来源,如二氧化碳 (CO2),甲 (CH4) 和氧化 (N2O). 缓解策略,包括改善废水处理和生物质采集,可以显著减少这些排放,帮助实现全球气候目标.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 临界技术 临界技术
背景情况:
- 湖泊虽然占地面积很小,但它们是温室气体 (GHG) 的不成比例的大排放者,对全球碳和循环作出了重大贡献.
- 这些排放,包括二氧化碳 (CO2),甲 (CH4) 和氧化 (N2O),占全球化石燃料排放量的很大一部分,突出了它们在气候调节中的重要性.
- 了解驱动这些排放的复杂机制对于制定有效的减缓气候变化战略至关重要.
研究的目的:
- 综合了解湖泊温室气体 (GHG) 排放机制,测量技术和缓解策略的最新进展.
- 确定改善全球温室气体预算和实施有效的湖泊气候解决方案的关键研究重点.
- 评估各种缓解措施在减少湖泊温室气体排放方面的潜力及其对水质和气候政策的共同利益.
主要方法:
- 关于湖泊温室气体排放的当前科学文献的审查和综合.
- 分析来自多尺度监测方法的数据,包括卫星检索,和浮标传感器.
- 评估拟议的减缓措施的有效性,例如加强废水处理,生物质采集和物理/化学干预.
主要成果:
- 净生态系统呼吸通常超过初级生产,导致二氧化碳超和,而厌氧甲基生成是首要的CH4来源,在特定条件下,氧途径贡献高达28%.
- 二氧化物排放主要是由化剂-脱化 (约. 这一比例是60%).
- 目前的全球温室气体预算表现出很高的变化,原因是小水体,沿海区域,冬季排放量和不一致的气体转移系数的样本不足.
结论:
- 加强废水处理,尿液转移和植被缓冲区等缓解措施可以将CH4和N2O减少15-25%,为气候和水质带来显著的附带效益.
- 生物质采集和浮动巨可以将CH4和CO2排放量降低高达57%,而微泡或硫酸盐剂量可以将剩余的CH4降低25-60%.
- 将湖泊减缓融入气候和水质政策中,得到标准化监测和人工智能驱动的扩展的支持,对于实现全球气候目标和可持续发展目标 (SDGs) 至关重要.
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