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海岸带蓝碳研究及其展望

, PP. 1641-1648

Keywords: 海岸带,蓝碳,生物地球化学循环,碳埋藏,碳通量

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Abstract:

?海岸带蓝碳是海洋碳汇的重要组成部分,在应对全球气候变化中具有十分重要的作用.通过系统调研,综述了海岸带蓝碳的组成、碳通量及其影响因素.针对海岸带蓝碳组成,重点阐述了红树林、盐沼和海草床这三种海岸带地区最具固碳效率生态系统的有机碳捕获与埋藏特征.在此基础上,从海岸带地区的水-气、土-气、地下水(孔隙水)向上交换的垂直界面,以及河口-(潮滩)湿地-近海的陆海水平界面两个维度分析了海岸带系统中不同形态碳的交换、输送过程及其通量,探讨了海岸带碳库收支对全球碳循环的影响.同时,结合海岸带人类活动特点以及对气候变化的响应规律,提出当前中国海岸带地区的蓝碳和碳汇功能正在经受着新一轮沿海土地开发、流域筑坝建库、近海富营养化及海平面上升等系列复杂因素的剧烈作用.因此,要充分结合中国海岸带地区的自然与社会属性特点,以陆海统筹为指导,进一步深化海岸带蓝碳研究,提高对不同区域及海岸带类型的固碳效率、碳库总量和生物地球化学循环过程的认识,建立和完善固碳增汇技术体系,构建海岸带蓝碳系统的综合观测网络与管理平台,服务于中国海岸带地区的蓝碳保护和生态文明建设.

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