权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Evaluation of Carbon Accumulation in Rhizosphere of Mangrove Forest Ecosystem.

红树林生态系统根际碳积累评价。

基本信息

批准号：
11660151
负责人：
NINOMIYA Ikuo
金额：
$ 2.3万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11660151/
关键词：
Mangrove Rhizosphere Carbon Accumulation Indonesia Thailand Vietnam Carbon Cycle Global Warming 沖縄

项目摘要

This study was conducted on mangrove forests of southern Thailand where a huge root biomass has been reported, in East Indonesian, an important center of the distribution of mangroves, and in the North Vietnam. Its primary objectives were to cstimate the carbon accumulation in soil of mangrove and to determine essential factors affecting the carbon storage. Total carbon contents were analyzed by using a CN coda(Sumigraph NC-80 at Ehime University). The carbon accumulations in soil of mangrove forests were calculated by applying the compact stereometry method. The results indicated that there was a huge carbon stock below ground of mangrove forests and particularly Rhizophora vegetations had extraondinary high carbon accumulations in soil. The values of carbon accumulations of mangroves in Ranong and Nakorn Sri Thamarat, Thailand ranged from 97 to 1185.1 t C ha^<-1> while the estimates of carbon accumulation of mangroves in Cilicap and Gilimanuk, Indonesia varied from 75.9 to 1563.2 t C … More ha^<-1>, and the below ground carbon storage of a 6 yr old mangrove plantation of Kandelia candel in Vietnam was about 79.897 t C ha^<-1>. In comparison to other types of forest, mangrove forests are considered as significant carbon sinks. Furthermore, the study has revealed three essential factors affecting the carbon accumulation below ground in mangrove forests. (1)High carbon accumulations in soil of mangroves could be attributable to their extraordinarily high amount of root biomass. (2)Frequency of inundation also has a strong effect on the anaerobic condition of sediment, which produces favorable conditions for the accumulation of carbon. (3)Vegetation age would be related to the sedimentary carbon stock in mangrove forests. Long-termed habitations where carbon has accumulated and the mangrove root system has developed for years seem to have higher below ground carbon stock. Taking the above into account, these results confirm the significant proportion of carbon stored in soil of mangrove forests and their importance as natural sinks for atmospheric CO_2. Less

这项研究是在泰国南部的红树林中进行的，那里已经报告了巨大的根生物量，在红树林分布的重要中心印度尼西亚东部和越南北部。其主要目的是研究红树林土壤中碳的积累，并确定影响碳储量的基本因素。使用CN尾部(Ehime University的Sumiggraph NC-80)分析总碳含量。应用紧凑型立体计量法计算了红树林土壤中碳的积累量。结果表明，红树林地下碳库巨大，特别是红树根类植被土壤中碳含量极高。泰国拉农和纳科恩的红树林的碳蓄积值在97到1185.1 t C ha；而印度尼西亚的Cilicap和Gilimanuk的红树林的碳蓄积量的估计在75.9到1563.2 t C…之间。在越南，6年生秋茄红树林的地下碳储量约为79.897 t C ha；与其他类型的森林相比，红树林被认为是重要的碳汇。此外，这项研究还揭示了影响红树林地下碳积累的三个基本因素。(1)红树林土壤中碳的高积累量可能与其超高的根生物量有关。(2)淹水频率对底泥厌氧条件也有较大影响，为碳的积累创造了有利条件。(3)植被年龄与红树林沉积碳储量有关。长期被认为是碳积累和红树林根系发育多年的栖息地，地下碳储量似乎更高。考虑到上述情况，这些结果证实了红树林土壤中储存的碳的很大比例，以及它们作为大气CO_2天然汇的重要性。