Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat
This study investigated spatial factors controlling CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O fluxes and compared global warming potential (GWP) among undrained forest (UDF), drained forest (DF), and drained burned land (DBL) on tropical peatland in Centr...
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doaj-5dd00fc1357f4fdd94c687d322899abc2020-11-24T21:21:07ZengMDPI AGAtmosphere2073-44332018-11-0191246510.3390/atmos9120465atmos9120465Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical PeatKiwamu Ishikura0Untung Darung1Takashi Inoue2Ryusuke Hatano3Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, JapanCenter for International Cooperation in Management of Tropical Peatland, University of Palangka Raya, Palangka Raya 73112, Central Kalimantan, IndonesiaGraduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, JapanGraduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, JapanThis study investigated spatial factors controlling CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O fluxes and compared global warming potential (GWP) among undrained forest (UDF), drained forest (DF), and drained burned land (DBL) on tropical peatland in Central Kalimantan, Indonesia. Sampling was performed once within two weeks in the beginning of dry season. CO<sub>2</sub> flux was significantly promoted by lowering soil moisture and pH. The result suggests that oxidative peat decomposition was enhanced in drier position, and the decomposition acidify the peat soils. CH<sub>4</sub> flux was significantly promoted by a rise in groundwater level, suggesting that methanogenesis was enhanced under anaerobic condition. N<sub>2</sub>O flux was promoted by increasing soil nitrate content in DF, suggesting that denitrification was promoted by substrate availability. On the other hand, N<sub>2</sub>O flux was promoted by lower soil C:N ratio and higher soil pH in DBL and UDF. CO<sub>2</sub> flux was the highest in DF (241 mg C m<sup>−2</sup> h<sup>−1</sup>) and was the lowest in DBL (94 mg C m<sup>−2</sup> h<sup>−1</sup>), whereas CH<sub>4</sub> flux was the highest in DBL (0.91 mg C m<sup>−2</sup> h<sup>−1</sup>) and was the lowest in DF (0.01 mg C m<sup>−2</sup> h<sup>−1</sup>), respectively. N<sub>2</sub>O flux was not significantly different among land uses. CO<sub>2</sub> flux relatively contributed to 91⁻100% of GWP. In conclusion, it is necessary to decrease CO<sub>2</sub> flux to mitigate GWP through a rise in groundwater level and soil moisture in the region.https://www.mdpi.com/2073-4433/9/12/465greenhouse gas emissiontropical peatlandglobal warming potentialland use |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kiwamu Ishikura Untung Darung Takashi Inoue Ryusuke Hatano |
spellingShingle |
Kiwamu Ishikura Untung Darung Takashi Inoue Ryusuke Hatano Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat Atmosphere greenhouse gas emission tropical peatland global warming potential land use |
author_facet |
Kiwamu Ishikura Untung Darung Takashi Inoue Ryusuke Hatano |
author_sort |
Kiwamu Ishikura |
title |
Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat |
title_short |
Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat |
title_full |
Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat |
title_fullStr |
Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat |
title_full_unstemmed |
Variation in Soil Properties Regulate Greenhouse Gas Fluxes and Global Warming Potential in Three Land Use Types on Tropical Peat |
title_sort |
variation in soil properties regulate greenhouse gas fluxes and global warming potential in three land use types on tropical peat |
publisher |
MDPI AG |
series |
Atmosphere |
issn |
2073-4433 |
publishDate |
2018-11-01 |
description |
This study investigated spatial factors controlling CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O fluxes and compared global warming potential (GWP) among undrained forest (UDF), drained forest (DF), and drained burned land (DBL) on tropical peatland in Central Kalimantan, Indonesia. Sampling was performed once within two weeks in the beginning of dry season. CO<sub>2</sub> flux was significantly promoted by lowering soil moisture and pH. The result suggests that oxidative peat decomposition was enhanced in drier position, and the decomposition acidify the peat soils. CH<sub>4</sub> flux was significantly promoted by a rise in groundwater level, suggesting that methanogenesis was enhanced under anaerobic condition. N<sub>2</sub>O flux was promoted by increasing soil nitrate content in DF, suggesting that denitrification was promoted by substrate availability. On the other hand, N<sub>2</sub>O flux was promoted by lower soil C:N ratio and higher soil pH in DBL and UDF. CO<sub>2</sub> flux was the highest in DF (241 mg C m<sup>−2</sup> h<sup>−1</sup>) and was the lowest in DBL (94 mg C m<sup>−2</sup> h<sup>−1</sup>), whereas CH<sub>4</sub> flux was the highest in DBL (0.91 mg C m<sup>−2</sup> h<sup>−1</sup>) and was the lowest in DF (0.01 mg C m<sup>−2</sup> h<sup>−1</sup>), respectively. N<sub>2</sub>O flux was not significantly different among land uses. CO<sub>2</sub> flux relatively contributed to 91⁻100% of GWP. In conclusion, it is necessary to decrease CO<sub>2</sub> flux to mitigate GWP through a rise in groundwater level and soil moisture in the region. |
topic |
greenhouse gas emission tropical peatland global warming potential land use |
url |
https://www.mdpi.com/2073-4433/9/12/465 |
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