Coastal blue carbon in China as a nature-based solution toward carbon neutrality

作     者：Faming Wang Jihua Liu Guoming Qin Jingfan Zhang Jinge Zhou Jingtao Wu Lulu Zhang Poonam Thapa Christian J.Sanders Isaac R.Santos Xiuzhen Li Guanghui Lin Qihao Weng Jianwu Tang Nianzhi Jiao Hai Ren 

作者机构：Xiaoliang Research Station of Tropical Coastal EcosystemsKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystemsand the CAS Engineering Laboratory for Ecological Restoration of lsland and Coastal EcosystemsSouth China Botanical GardenChinese Academy of SciencesGuangzhou 510650China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)Guangzhou 510650China Marine Research InstituteShandong UniversityQingdao 266237China University of Chinese Academy of SciencesBeijing 100049China National Marine Science CentreFaculty of Science and EngineeringSouther Cross UniversityCoffs HarbourNSW 2450Australia Department of Marine SciencesUniversity of Gothenburg41319 GothenburgSweden State Key Laboratory of Estuarine and Coastal Research and Instiute of Eco-ChongmingEast China Normal UniversityShanghai 201100China Key Laboratory for Earth System ModelingMinistry of EducationDepartment of Earth System ScienceTsinghua UniversityBejing 100084China Laboratory of Stable Isotope and Gulf EcologyInstitute of Ocean EngineeringTsinghua's Shenzhen International Graduate SchoolShenzhen 518055China Department of Land Surveying and Geo-nformaticsThe Hong Kong Polytechnic UniversiyHongkong 99077China Innovative Research Center for Carbon NeutralizationGlobal ONCE ProgramXiamen 361005China 

出 版 物：《The Innovation》 (创新（英文）)

年 卷 期：2023年第4卷第5期

页      面：109-123页

核心收录：

学科分类：0907[农学-林学] 07[理学] 0707[理学-海洋科学] 0713[理学-生态学] 

基　　金：CAS Project for Young Scientists in Basic Research(YSBR-037) ANSO collaborative research(ANSO-CR-KP-2022-11) National Natural Science Foundation of China(U2106209,42141003,42141016,and 32171594) Guangdong Basic and Applied Basic Research Foundation(2021B1515020011 and 2021B1212110004) CAS Youth Innovation Promotion Association(2021347) National Forestry and Grassland Administration Youth Talent Support Program(2020BJ003) R&D program of Guangdong Provincial Department of Science and Technology(2018B030324003). 

主　　题：tidal coastal carbon 

摘      要：To achieve the Paris Agreement,China pledged to become“Carbon Neutralby the 2060s.In addition to massive decarbonization,this would require significant changes in ecosystems toward negative CO_(2)emissions.The ability of coastal blue carbon ecosystems(BCEs),including mangrove,salt marsh,and seagrass meadows,to sequester large amounts of CO_(2)makes their conservation and restoration an important“nature-based solution(NbS)for climate adaptation and mitigation.In this review,we examine how BCEs in China can contribute to climate mitigation.On the national scale,the BCEs in China store up to 118 Tg C across a total area of 1,440,377 ha,including over 75%as unvegetated tidal flats.The annual sedimental C burial of these BCEs reaches up to 2.06 Tg C year^(−1),of which most occurs in salt marshes and tidal flats.The lateral C flux of mangroves and salt marshes contributes to 1.17 Tg C year^(−1)along the Chinese coastline.Conservation and restoration of BCEs benefit climate change mitigation and provide other ecological services with a value of$32,000 ha^(−1)year^(−1).The potential practices and technologies that can be implemented in China to improve BCE C sequestration,including their constraints and feasibility,are also outlined.Future directions are suggested to improve blue carbon estimates on aerial extent,carbon stocks,sequestration,and mitigation potential.Restoring and preserving BCEs would be a cost-effective step to achieve Carbon Neutral by 2060 in China despite various barriers that should be removed.