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在中国,Spartina alterniflora的入侵有利于蓝色碳的封存

Jingfan Zhang¹, Dehua Mao², Jihua Liu³

¹Guangdong Key Laboratory of Applied Botany, Xiaoliang Research Station of Tropical Coastal Ecosystems, the CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China; South China National Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.

Science bulletin

|May 16, 2024

概括

在中国,Spartina alterniflora的入侵显著增加了土壤有机碳 (SOC) 库存,增加了沿海的蓝色碳. 然而,人类活动导致SOC损失,导致净收益.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
环境科学环境科学

背景情况:

在中国的海岸,Spartina alterniflora的入侵是广泛的,主要影响泥平原.
在这些被侵占的泥原中,Spartina alterniflora对土壤有机碳 (SOC) 库存的影响在全国范围内仍未得到充分研究.

研究的目的:

从1990年到2020年,量化海岸泥SOC库存的全国变化,这是由于Spartina alterniflora的入侵造成的.
评估Spartina alterniflora入侵对中国沿海蓝色碳的净影响.

主要方法:

全国对沿海泥土平原SOC库存变化的评估.
对Spartina alterniflora入侵影响和人类干预影响的分析.

主要成果:

在中国沿海地区,Spartina alterniflora的入侵显著增加了SOC库存.
侵袭增加了2.3Tg的SOC库存,有助于沿海蓝色碳.
人类活动造成了1.78万亿 SOC 库存的损失.
在SOC库存中观察到0.52 Tg C的净收益.

结论:

在中国沿海地区,Spartina alterniflora的入侵已经广泛而持续地增强了蓝色碳库存.
对 SOC 种群的积极影响被人类活动部分抵消.
这些发现挑战了Spartina alterniflora入侵减少生态系统服务的观念.

关键词:

蓝色碳的封存方式中国沿海湿地中国沿海湿地泥土平地泥土平地斯巴尔蒂纳 (Spartina alterniflora) 的入侵其他植物

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