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基于贝叶斯最大的方法,精确估计盐沼生态系统的碳储存 - - 对Spartina alterniflora生态系统的案例研究

Junyu He¹, Junjie Yin², Jiaping Wu²

¹Donghai Laboratory, Zhoushan, China; Ocean College, Zhejiang University, Zhoushan, China; Joint Center for Blue Carbon Research, Ocean Academy, Zhejiang University, Zhoushan, China; Ocean Research Center of Zhoushan, Zhejiang University, Zhoushan, China.

Journal of environmental management

|February 14, 2024

概括

精确量化蓝碳生态系统 (如盐沼) 中的碳储存至关重要. 贝叶斯最大 (BME) 方法准确地估计了Spartina alterniflora生态系统中的有机碳,提供了有价值的碳封存数据.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态生态学生态生态学

背景情况:

蓝碳生态系统,如盐沼,在全球碳封存中发挥着至关重要的作用.
精确量化这些生态系统中的碳储存对于有效的碳核算和气候变化减缓战略至关重要.

研究的目的:

开发和验证一个可靠的方法来估计在由Spartina alterniflora主导的蓝碳生态系统中的有机碳 (OC) 储存.
为了生成碳储存密度的高分辨率空间地图,并评估碳埋葬率.

主要方法:

采用贝叶斯最大 (BME) 方法来整合来自分层沉积物样本的硬和软有机碳 (OC) 数据.
开发了一个基于沉积物时间的3维时空OC估计模型.
使用十倍交叉验证来评估BME模型的准确性.

主要成果:

该BME模型在OC估计中显示出高准确度 (R2 = 0.8564,RMSE = 0.1026%,MAE = 0.0748%).
生成的1米空间分辨率地图显示,在稳定的S. alterniflora区域 (71.79t/ha) 的碳储存密度高于在顶部30cm的扩张区域 (69.82t/ha).
在研究区域内计算出平均碳埋葬率为266g C/m2/yr,总碳储存量为781.50t.

结论:

基于BME的框架为估计蓝碳生态系统中的碳储存提供了一种通用且准确的方法.
这些发现强调了S. alterniflora生态系统在碳捕获方面的重要性,并支持制定标准化碳汇方法.

关键词:

在3D建模中使用3D模型.在BME中,BME是最重要的.蓝色碳是一种蓝色碳.碳库存碳库存碳库存碳库存这是入侵的入侵.时空领域的空间域.

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