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长期观察发现,在水产养殖退出后,湖泊的二氧化碳排放持续

Jiayu Zhao¹, Mi Zhang², Wei Xiao³

¹College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China; South China Sea Institute of Marine Meteorology (SIMM), Guangdong Ocean University, Zhanjiang 524088, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China.

|February 15, 2026

概括

水产养殖对湖泊的二氧化碳 (CO2) 水平产生重大影响. 拆除钢笔最初减少了二氧化碳排放,但生态系统的恢复,特别是淹没的植被,对于长期的碳减排至关重要.

科学领域:

环境科学环境科学
临界技术临界技术
生态系统生态学生态学

背景情况:

水产养殖是湖泊生态系统中二氧化碳 (CO2) 不平衡的主要驱动因素.
由于现场数据有限,水产养殖退缩对二氧化碳变异性的长期影响尚不清楚.

研究的目的:

在受水产养殖影响的湖泊中调查二氧化碳流量和部分压力 (pCO2).
评估管理干预措施对二氧化碳排放的影响.
了解生态系统结构在碳循环中的作用.

主要方法:

长期实地测量 (2000-2015年) 的pCO2和二氧化碳流在阳湖 (LYC) 和东台湖湾 (DTH).
对二氧化碳排放轨迹的分析,以应对水产养殖管理.
应用随机森林 (RF) 模型来确定水产养殖面积和排放强度之间的关系.

主要成果:

这两个湖是净二氧化碳来源,LYC的二氧化碳排放量明显高 (108 ± 56 g C m-2 yr-1) 比DTH (37 ± 24 g C m-2 yr-1).
LYC显示出V形的二氧化碳排放模式:在取出笔时减少,但由于淹没的植被损失,在恢复后反弹.
水产养殖区非线性调节的排放强度,挑战线性缩放假设.

结论:

在水产养殖中有效的碳减排不仅需要减少营养,还需要恢复生态系统的自营养碳沉积能力.
水下植被的丧失严重影响了二氧化碳的吸收,这凸显了结构性恢复的重要性.
巨生物的保留稳定了DTH中的排放,证明了保持生态系统完整性的好处.

关键词:

水产养殖撤退活动碳排放2) 的动态.湖泊水产养殖的水产养殖长期测量长期测量随机森林模型是一个随机森林模型.

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