Spartina alterniflora invasion benefits blue carbon sequestration in China

Jingfan Zhang ¹Dehua Mao ²Jihua Liu ³Yaping Chen ⁴Matthew Kirwan ⁵Christian Sanders ⁶Jinge Zhou ¹Zhe Lu ⁷Guoming Qin ⁷Xingyun Huang ¹Hui Li ⁸Hengqi Yan ⁹Nianzhi Jiao ¹⁰Jilan Su ¹¹Faming Wang¹²

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作者信息

1. Guangdong 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
2. Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China
3. Marine Research Institute,Shandong University,Qingdao 266237,China
4. School of Ecology,Shenzhen Campus of Sun Yat-sen University,Shenzhen 518107,China
5. Virginia Institute of Marine Science,Gloucester Point,VA 23062,USA
6. National Marine Science Centre,School of Environment,Science and Engineering,Southern Cross University,Coffs Harbour,NSW 2450,Australia
7. Guangdong 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;South China National Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China
8. Guangdong Eco-engineering Polytechnic,Guangzhou 510520,China
9. University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China
10. Carbon Neutral Innovation Research Center and Fujian Key Laboratory of Marine Carbon Sequestration,Xiamen University,Xiamen 361005,China
11. Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China
12. Guangdong 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;South China National Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China;School of Ecology and Environment,Hainan University,Haikou 570
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Abstract

Spartina alterniflora has rapidly and extensively encroached on China's coastline over the past decades.Among the coastal areas invaded by S.alterniflora,at most 93％are mudflats.However,the effect of S.alterniflora invasion on soil organic carbon(SOC)stocks of coastal mudflats has not been systematically studied on a national scale.Here,we quantified the nationwide changes in SOC stocks in coastal mudflats associated with S.alterniflora invasion between 1990 and 2020.We found that S.alterniflora invasion sig-nificantly enhanced SOC stocks in coastal China.Nonetheless,the benefit of S.alterniflora invasion of coastal SOC stock may be weakened by continuing human intervention.We found that S.alterniflora invading mudflats added 2.3 Tg SOC stocks to China's coastal blue carbon,while 1.78 Tg SOC stocks were lost mainly due to human activities,resulted in a net SOC stock gain of 0.52 Tg C.These findings over-turned the traditionally thought that S.alterniflora invasion would reduce ecosystem services by high-lighting that the historical invasion of S.alterniflora has broadly and consistently enhanced blue carbon stock in coastal China.

Key words

Spartina alterniflora invasion/Mudflats/China coastal wetland/Blue carbon sequestration

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基金项目

CAS Project for Young Scientists in Basic Research(YSBR-037)

National Key R&D Program of China(2023YFE0113100)

National Key R&D Program of China(2023YFF1304500)

National Key R&D Program of China(2021YFC3100400)

National Natural Science Foundation of China(U2106209)

National Natural Science Foundation of China(32171594)

National Natural Science Foundation of China(32301398)

National Natural Science Foundation of China(42007230)

Guangdong Basic and Applied Basic Research Foundation(2021B1515020011)

CAS Youth Innovation Promotion Association(2021347)

National Forestry and Grassland Administration Youth Talent Support Program(2020BJ003)

ANSO collaborative research(ANSO-CR-KP-2022-11)

Guangdong Key Research Program(2022B1111230001)

Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(SML2023SP218)

Guangdong Provincial Key Laboratory of Applied Botany,South China Botanical Garden(2023B1212060046)

MOST Ocean Negative Carbon Emissions project()

出版年

2024

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

参考文献量4

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