抄録
It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.
| 元の言語 | 英語 |
|---|---|
| ホスト出版物のタイトル | Advances in Asian Human-Environmental Research |
| 出版者 | Springer International Publishing |
| ページ | 217-233 |
| ページ数 | 17 |
| DOI | |
| 出版物ステータス | 出版済み - 1 1 2020 |
出版物シリーズ
| 名前 | Advances in Asian Human-Environmental Research |
|---|---|
| ISSN（印刷物） | 1879-7180 |
| ISSN（電子版） | 1879-7199 |
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All Science Journal Classification (ASJC) codes
- Global and Planetary Change
- Geography, Planning and Development
- Nature and Landscape Conservation
- Management, Monitoring, Policy and Law
これを引用
Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. / Fukushima, Keitaro; Tokuchi, Naoko; Samejima, Hiromitsu; Hon, Jason; Kano, Yuichi.
Advances in Asian Human-Environmental Research. Springer International Publishing, 2020. p. 217-233 (Advances in Asian Human-Environmental Research).研究成果: 著書/レポートタイプへの貢献 › 章
}
TY - CHAP
T1 - Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak
AU - Fukushima, Keitaro
AU - Tokuchi, Naoko
AU - Samejima, Hiromitsu
AU - Hon, Jason
AU - Kano, Yuichi
PY - 2020/1/1
Y1 - 2020/1/1
N2 - It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.
AB - It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.
UR - http://www.scopus.com/inward/record.url?scp=85075190125&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85075190125&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-7513-2_12
DO - 10.1007/978-981-13-7513-2_12
M3 - Chapter
AN - SCOPUS:85075190125
T3 - Advances in Asian Human-Environmental Research
SP - 217
EP - 233
BT - Advances in Asian Human-Environmental Research
PB - Springer International Publishing
ER -