Tropical peat debris storage in the tidal flat in northern part of the Bengkalis island, Indonesia
Tropical peat debris storage in the tidal flat in northern part of the Bengkalis island, Indonesia
复制标题
印度尼西亚 Bengkalis 岛北部潮滩内的热带泥炭碎片储存
DOI：
10.1051/matecconf/201927606002
复制
发表时间：
2019
影响因子：
--
通讯作者：
Koyama Atsushi
中科院分区：
文献类型：
--
作者：
Yamamoto Koichi;Basir Noerdin;Sutikno Sigit;Kanno Ariyo;Kagawa Hiroki;Suzuki Motoyuki;Akamatsu Yoshihisa;Koyama Atsushi
目前，泥炭的二氧化碳排放是一个全球性问题。特别是，它是由干泥炭或泥炭火的生物降解引起的。在班加里斯岛北部海岸，泥炭由于海岸侵蚀而流出，西部海岸由泥炭形成红树林潮滩。红树林岩心样品证实粘土层和泥炭层为互层，泥炭土处于缺氧状态，分解受到抑制。在班加里斯岛的北部，泥炭被夹在粘土层中。生物降解可以通过被夹在中间来抑制，但有可能通过在潮滩中提供一个储存泥炭的地方来抑制泥炭腐解量。在本研究中，我们检测了红树林滩涂中堆积的泥炭的分解程度，证实了红树林下滩涂泥炭土壤的分解受到抑制，我们称之为三明治效应。深层泥炭物质来自原生泥炭沼泽林，表层有机物质则被认为来自红树林。考虑1988-2015年的变化，红树林固碳速率为1.7×103tC km-2yr-1，泥炭次生沉积积累碳速率为7.4×103tC km-2yr-1。
Currently, CO2 emissions from the peat is a global problem. Particularly, it is caused by biodegradation of dry peat or peat fire. In the northern coast of Bengkalis island, peat is flowing out due to coastal erosion, and mangrove tidal flat is formed the west coast by peat. The core samples of the mangrove have been confirmed that the clay layer and the peat layer are in mutual layers, and decomposition was inhabited because these sandwiched peat soils was an anoxic state. In the northern part of the Bengkalis island, peat is sandwiched in the clay layer. Biodegradation can be suppressed by being sandwiched, there is a possibility of suppressing the amount of peat decomposed by providing a place to store peat in tidal flats. In this research, we examined the degree of decomposition of peat accumulated in the mangrove tidal flats and confirmed that decomposition was suppressed for the peat soils in the tidal flat under mangrove trees, we call it “sandwich effect”. The peat materials in deeper layer came from originally peat swamp forest, however, the surface organic materials were thought to be come from mangrove materials. Considering the change from 1988 to 2015, the carbon fixation rate by mangrove is 1.7 × 103tC km-2yr-1, the carbon accumulation rate by accumulation of secondary deposition of peat was 7.4×103tC km-2yr-1.