期刊
TROPICAL ECOLOGY
卷 62, 期 1, 页码 95-106出版社
SPRINGERNATURE
DOI: 10.1007/s42965-020-00130-5
关键词
Carbon stock; Forest biomass; Mangrove; Sediment organic carbon; Sundarbans
类别
资金
- Ministry of Earth Sciences, Government of India [MoES/36/OOIS/SIBER/07]
- Ecosystem Services for Poverty Alleviation (ESPA, Delta)
- Divisional Forest Office (DFO), South 24 Paraganas, Govt. of West Bengal
- Sundarban Biosphere Reserve (SBR)
- Ecosystem Services for Poverty Alleviation (ESPA, Delta) programme
The study investigated the spatial distribution of mangrove biomass and organic carbon storage in the Indian part of the Sundarbans, the world's largest mangrove forest. Factors such as pore-water salinity and dominant mangrove species influenced the distribution of plant biomass. Litter fall and sediment organic carbon content play significant roles in the carbon cycling of the mangrove ecosystem, with refractory organic carbon decreasing with depth.
This study covered spatial distribution of mangrove biomass, litter fall and intertidal sediment organic carbon storage pattern in the Indian part of the world's largest mangrove forest, the Sundarbans. The above and below ground (AGB and BGB) biomass spatially varied with high (57.28 +/- 3.17 and 28.24 +/- 2.64 Mg ha(-1)), moderate (44.81 +/- 8.13 and 20.88 +/- 1.41 Mg ha(-1)) and low (18.97 +/- 3.58 and 9.58 +/- 0.87 Mg ha(-1)) for inner, middle and outer zones of the mangrove biosphere. Trunk, branch and leaves formed 45.8, 34.7 and 19.5% of AGB. The AGB: BGB was 2.07 indicating more carbon stock in trunk than root. Predominant mangroves genus Avicennia contributed 57% of plant biomass. Pore-water salinity negatively regulated the distribution of plant biomass. Mean AGB (40.35 Mg ha(-1)) and BGB (19.57 Mg ha(-1)) and mean carbon content (40.5%) yielded 10.35 Tg carbon stock in Indian Sundarbans. Litter fall varied from 8.95 to 12.30 Mg ha(-1) yr(-1), supplying annually 284.7 Gg organic carbon to sediment. Sediment organic carbon (SOC) content varied from 0.92 to 3.29% (avg. 1.99%) building up an organic carbon stock of 59.14 Tg up to 90 cm depth of the intertidal sediment column. Organic carbon, humic acid (HA) and fulvic acid (FA) in sediment showed a decreasing trend with depth indicating organic matter decomposition and depletion of HA and FA accumulation rate. Based on mean concentration of HA and FA as 300 mu g g(-1) and 571 mu g g(-1) and their respective carbon percentage as 54.25 and 46.23, refractory organic carbon stock in the intertidal mangrove sediment was estimated as 1.7 Tg.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据