Indonesia's blue carbon: a globally significant and vulnerable sink for seagrass and mangrove carbon
Indonesia's blue carbon: a globally significant and vulnerable sink for seagrass and mangrove carbon
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DOI：
10.1007/s11273-015-9446-y
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发表时间：
2016-02-01
影响因子：
1.8
通讯作者：
Wagey, T.
中科院分区：
文献类型：
--
作者：
Alongi, D. M.;Murdiyarso, D.;Wagey, T.
根据已发表和未发表的对活海草和红树林生物量和土壤池的有机碳含量的测量，评估了印度尼西亚沿海湿地碳储存的全球意义。海草地上和地下生物量的中位数分别为0.29和1.13 Mg C ha（-1）;土壤库的中位数为118.1 Mg C ha（-1）。结合植物生物量和土壤，印尼海草草甸的碳储量中位数为119.5毫克碳公顷（-1）。外推到估计的海草总面积30，000 km（2），国家储存值为368.5 Tg C。红树林地上和地下生物量的中位数分别为159.1和16.7 Mg C ha（-1）;土壤库的中位数为774.7 Mg C ha（-1）。印度尼西亚红树林的碳储量中位数为950.5 Mg C ha（-1）。外推到估计的红树林总面积31，894 km（2），国家储存值为3.0 Pg C，如果这些生境在土壤深度> 1 m处封存碳和/或封存无机碳，则可能低估。印度尼西亚的海草和红树林加起来保守地占3.4 Pg C，约占世界蓝碳库的17%。这些湿地的持续退化和破坏对二氧化碳排放和与邻近沿海沃茨的溶解碳交换产生了重要影响。我们估计大约有29，040千兆克二氧化碳（当量）。每年都回到大气-海洋池。这一数量相当于印度尼西亚与森林和泥炭地转换相关的年排放量的约3.2%。这些结果突出表明，迫切需要蓝碳和降排+项目，以此作为遏制湿地面积下降和减缓世界沿海碳储存量大部分释放的手段。
The global significance of carbon storage in Indonesia's coastal wetlands was assessed based on published and unpublished measurements of the organic carbon content of living seagrass and mangrove biomass and soil pools. For seagrasses, median above- and below-ground biomass was 0.29 and 1.13 Mg C ha(-1) respectively; the median soil pool was 118.1 Mg C ha(-1). Combining plant biomass and soil, median carbon storage in an Indonesian seagrass meadow is 119.5 Mg C ha(-1). Extrapolated to the estimated total seagrass area of 30,000 km(2), the national storage value is 368.5 Tg C. For mangroves, median above- and below-ground biomass was 159.1 and 16.7 Mg C ha(-1), respectively; the median soil pool was 774.7 Mg C ha(-1). The median carbon storage in an Indonesian mangrove forest is 950.5 Mg C ha(-1). Extrapolated to the total estimated mangrove area of 31,894 km(2), the national storage value is 3.0 Pg C, a likely underestimate if these habitats sequester carbon at soil depths > 1 m and/or sequester inorganic carbon. Together, Indonesia's seagrasses and mangroves conservatively account for 3.4 Pg C, roughly 17 % of the world's blue carbon reservoir. Continued degradation and destruction of these wetlands has important consequences for CO2 emissions and dissolved carbon exchange with adjacent coastal waters. We estimate that roughly 29,040 Gg CO2 (eq.) is returned annually to the atmosphere-ocean pool. This amount is equivalent to about 3.2 % of Indonesia's annual emissions associated with forest and peat land conversion. These results highlight the urgent need for blue carbon and REDD+ projects as a means to stem the decline in wetland area and to mitigate the release of a significant fraction of the world's coastal carbon stores.