城市化影响溶解有机物特性,但微生物影响湖泊中的温室气体度
Peng Deng1, Qixing Zhou1, Jiwei Luo1
1Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
The Science of the total environment
|December 13, 2023
概括
城市化,而不是地理,塑造湖泊溶解有机物 (DOM) 和温室气体 (GHG) 排放. 城市化的增加加快了水中碳循环,影响了气候变化预测和全球变暖管理.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 气候科学 气候科学
背景情况:
- 了解溶解有机物 (DOM) 特性和温室气体 (GHG) 排放对于气候变化研究和水生碳命运至关重要.
- 解释DOM和GHG数据是复杂的,因为在空间和时间的变化自然和人为因素.
研究的目的:
- 调查DOM组成和湖泊温室气体排放的主要驱动因素.
- 评估城市化对湖泊碳循环的影响及其未来影响.
主要方法:
- 使用机器学习建模与环境分析相结合.
- 分析了城市化,DOM属性,细菌群落和温室气体排放之间的关系.
主要成果:
- 人口密度和人造表面显示的城市化被发现是湖泊DOM组成的关键决定因素,超过了地理因素.
- 细菌社区结构被确定为控制湖泊温室气体排放的主导因素.
- 城市化提高了DOM的生物可用性,降低了DOM降解指数 (Ideg),并增加了DOM转化为无机碳的可能性.
- 土地转化为人工表面导致有机碳埋葬,而SSP5情景放大了碳排放潜力.
结论:
- 预计未来城市化增加将加速湖泊生态系统中的碳循环.
- 研究结果强调,需要将城市化影响纳入气候模型和全球变暖管理战略.
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