摘要
红树林生态系统在全球气候变化和碳循环过程中发挥着很重要的作用,准确评估红树林湿地的碳收支,对于保护和恢复海洋蓝色碳汇以及全球气候治理工作具有重要的意义。本研究以海南东寨港国家级自然保护区的红树林湿地为研究对象,采用《对2006 PCC国家温室气体清单指南的2013增补:湿地》(简称《湿地指南》)中的计算方法,利用野外现场调查数据及已有的研究成果作为参数,评估和量化海南东寨港红树林湿地在2010—2018年期间的碳收支情况。研究表明:(1)2010年红树林面积为1627.21 hm^2,全部为成熟红树林,碳储量为5.85×10^5t C;2018年红树林面积为1665.42 hm^2,其中1625.84 hm^2为成熟红树林,碳储量为6.71×10^3t C,39.58 hm2为过渡期红树林,碳储量为4.36×10^3t C,总碳储量为6.75×10^5t C。(2)2010—2018年期间红树林碳储量增加了9.0×10^4t C。另外,有1.37 hm^2的红树林湿地退化为水域,释放了81.36 t的碳储量。因此,2010—2018年期间东寨港红树林湿地碳收支为+8.99×10^4t C,整体上表现为净碳汇生态系统。本研究结果可为气候变化背景下海南红树林湿地的保护与恢复、风险评估以及气候治理提供科学参考。
Mangrove ecosystem plays an important role in global climate change and the process of carbon cycle. Accurate assessment of carbon budget of mangrove wetland is of great significance for the protection and restoration of marine blue car-bon and global climate governance. In this study, the mangrove wetland in Hainan Dongzhaigang National Nature Reserve is taken as the research object, and the calculation method in 2013 supplement to the 2006 IPCC guidelines for national green-house gas inventories: Wetlands(wetlands guidelines for short) is adopted, and the field investigation data and existing re-search results are used as parameters, to evaluate and quantify the carbon budget of mangrove wetland in Hainan Dongzhaigang during 2010-2018. The results show that:(1) In 2010, the mangrove area is 1 627.21 hm^2, all of which are mature mangroves, with carbon reserves of 5.85 × 105 t C. In 2018, the mangrove area is 1 665.42 hm^2, of which 1 625.84 hm^2 is mature mangrove, with carbon reserves of 6.71 × 105 t C, while 39.58 hm^2 is transitional mangrove,with carbon reserves of4.36 × 103 t C, total carbon reserves is 6.75 × 105 t C.(2) During 2010-2018, the carbon storage of mangrove increased by 9.0 ×104 t C. In addition, 1.37 hm^2 of mangrove wetland degenerated into water, releasing 81.36 t of carbon reserves. Therefore, the carbon budget of Dongzhaigang mangrove wetland is 8.99 × 104 t C during 2010-2018, which is a net carbon sink ecosystem as a whole. The results can provide scientific reference for the protection and restoration, risk assessment and climate control of mangrove wetland in Hainan under the background of climate change.
作者
李翠华
蔡榕硕
颜秀花
LI Cuihua;CAI Rongshuo;YAN Xiuhua(Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 361005,China)
出处
《海洋通报》
CAS
CSCD
北大核心
2020年第4期488-497,共10页
Marine Science Bulletin
基金
国家重点研发计划专项(2017YFA0604903,2017YFA0604902)
自然资源部海洋战略规划、政策制定与实施项目(180702)
国家社科基金重大项目(17ZDA172)
关键词
气候变化
红树林
碳收支
海南东寨港
climate change
mangrove
carbon budget
Hainan Dongzhaigang
