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使用模式强烈主导了来自小型人工湖的CO2和CH4排放动态

Lijun Wang¹, Lingyi Xiang², Xiaofeng Wang¹

¹Chongqing Key Laboratory of Carbon Cycle and Carbon Regulation of Mountain Ecosystem, Chongqing Normal University, Chongqing, 401331, China; Chongqing Field Observation and Research Station of Earth Surface Ecological Process in the Three Gorges Reservoir Area, Chongqing Normal University, Chongqing, 405400, China; School of Geography and Tourism, Chongqing Normal University, Chongqing, 401331, China.

Journal of environmental management

|December 11, 2024

概括

人类活动显著改变了小湖泊的温室气体排放. 城市和水产养殖湖泊排放的二氧化碳 (CO2) 和甲 (CH4) 比其他类型的二氧化碳 (CO2) 更多,影响全球碳预算.

科学领域:

环境科学环境科学
临界技术临界技术
气候变化研究气候变化研究

背景情况:

小湖是大气中二氧化碳 (CO2) 和甲 (CH4) 的至关重要的,但尚未得到充分研究的来源.
人类活动和各种湖泊功能使得这些生态系统中温室气体 (GHG) 动态的理解变得复杂.

研究的目的:

调查33个小湖的时空动态和控制二氧化碳和CH4排放.
为了澄清人为引起的功能转移对城市地区湖泊温室气体排放的影响.

主要方法:

现场测量了33个小湖的二氧化碳和CH4度和流量.
微宇宙培养实验,以评估沉积物CO2和CH4生产率.
分析景观特性,湖泊利用模式,以及水/沉积物化学.

主要成果:

湖泊利用显著影响二氧化碳和CH4排放;城市和水产养殖湖泊的排放量更高.
沉积物有机碳,微生物碳和营养负载 (有机碳和) 推动温室气体的产生和流动.
人类活动,特别是城市化和水产养殖,增加了湖泊温室气体排放潜力和空间异质性.

结论:

人类主导的小型湖泊的功能转变增强了它们作为二氧化碳和CH4排放热点的潜力.
湖泊利用模式影响了关键的排放控制和基于水化学的预测模型的可靠性.
结合人类利用的适应性预测模型对于准确的全球温室气体库存评估至关重要.

关键词:

的二氧化碳 (CO2) 和CH4) 的排放量.不同的利用模式不同.小的人工湖泊,小的人工湖泊.时间空间的变化.

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