Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan
This study was carried out at Kita-mura near Bibai located in central Hokkaido, Japan, with the intention of investigating the effects of different agronomical managements on CH4 emissions from paddy fields on mineral soil over peat under farmers’ actual management conditions in the snowy...
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MDPI AG
2018-05-01
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| Series: | Atmosphere |
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| Online Access: | http://www.mdpi.com/2073-4433/9/6/212 |
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| author | Habib Mohammad Naser Osamu Nagata Sarmin Sultana Ryusuke Hatano |
| author_facet | Habib Mohammad Naser Osamu Nagata Sarmin Sultana Ryusuke Hatano |
| author_sort | Habib Mohammad Naser |
| collection | DOAJ |
| description | This study was carried out at Kita-mura near Bibai located in central Hokkaido, Japan, with the intention of investigating the effects of different agronomical managements on CH4 emissions from paddy fields on mineral soil over peat under farmers’ actual management conditions in the snowy temperate region. Four fields were studied, including two fields with twice drainage (D1-M and D2-M) and also a single-drainage field (D3-S) under annual single-cropping and a paddy-fallow-paddy crop rotation as their systems. The other field was under single cropping annual with continuous flooding (CF-R) in the pattern of soybean (upland crop)-fallow-paddy. The mineral-soil thickness of these soil-dressed peatland fields varied from 20 to 47 cm. The amount of crop residues leftover in the fields ranged from 277 to 751 g dry matter m−2. Total CH4 emissions ranged from 25.3 to 116 g CH4-C m−2 per growing season. There was a significant relationship between crop-residue carbon (C) and total CH4 emissions during the rice-growing season. Methane fluxes from paddy soils had a strong interaction between readily available C source for methanogens and anaerobic conditions created by water management. Despite the differences in water regime and soil type, the average values of straw’s efficiency on CH4 production in this study were significantly higher than those of southern Japan and statistically identical with central Hokkaido. Our results suggest that the environmental conditions of central Hokkaido in association with crop-residue management had a significant influence on CH4 emission from paddy fields on mineral soil over peat. Rotation soybean (upland)-to-paddy followed by drainage-twice practices also largely reduces CH4 emission. However, mineral-soil dressing on peat could have a significant impact on suppression of CH4 emissions from beneath the peat reservoir. |
| first_indexed | 2024-12-10T13:59:57Z |
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| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-10T13:59:57Z |
| publishDate | 2018-05-01 |
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| series | Atmosphere |
| spelling | doaj.art-d14d806d444f435b95586559ce41b0512022-12-22T01:45:51ZengMDPI AGAtmosphere2073-44332018-05-019621210.3390/atmos9060212atmos9060212Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, JapanHabib Mohammad Naser0Osamu Nagata1Sarmin Sultana2Ryusuke Hatano3Laboratory of Soil Science, Graduate School of Agriculture, Hokkaido University, Kita-Ku, Kita-9, Nishi-9, Sapporo 060-8589, JapanLowland Soils Lab, Bibai Branch, National Agricultural Research Center for Hokkaido Region, Bibai, Hokkaido 072-0045, JapanSoil Science Division, Bangladesh Agricultural Research Institute, Joydebpur 1701, Gazipur, BangladeshLaboratory of Soil Science, Graduate School of Agriculture, Hokkaido University, Kita-Ku, Kita-9, Nishi-9, Sapporo 060-8589, JapanThis study was carried out at Kita-mura near Bibai located in central Hokkaido, Japan, with the intention of investigating the effects of different agronomical managements on CH4 emissions from paddy fields on mineral soil over peat under farmers’ actual management conditions in the snowy temperate region. Four fields were studied, including two fields with twice drainage (D1-M and D2-M) and also a single-drainage field (D3-S) under annual single-cropping and a paddy-fallow-paddy crop rotation as their systems. The other field was under single cropping annual with continuous flooding (CF-R) in the pattern of soybean (upland crop)-fallow-paddy. The mineral-soil thickness of these soil-dressed peatland fields varied from 20 to 47 cm. The amount of crop residues leftover in the fields ranged from 277 to 751 g dry matter m−2. Total CH4 emissions ranged from 25.3 to 116 g CH4-C m−2 per growing season. There was a significant relationship between crop-residue carbon (C) and total CH4 emissions during the rice-growing season. Methane fluxes from paddy soils had a strong interaction between readily available C source for methanogens and anaerobic conditions created by water management. Despite the differences in water regime and soil type, the average values of straw’s efficiency on CH4 production in this study were significantly higher than those of southern Japan and statistically identical with central Hokkaido. Our results suggest that the environmental conditions of central Hokkaido in association with crop-residue management had a significant influence on CH4 emission from paddy fields on mineral soil over peat. Rotation soybean (upland)-to-paddy followed by drainage-twice practices also largely reduces CH4 emission. However, mineral-soil dressing on peat could have a significant impact on suppression of CH4 emissions from beneath the peat reservoir.http://www.mdpi.com/2073-4433/9/6/212crop residueswater regimecrop rotationtemperate region |
| spellingShingle | Habib Mohammad Naser Osamu Nagata Sarmin Sultana Ryusuke Hatano Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan Atmosphere crop residues water regime crop rotation temperate region |
| title | Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan |
| title_full | Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan |
| title_fullStr | Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan |
| title_full_unstemmed | Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan |
| title_short | Impact of Management Practices on Methane Emissions from Paddy Grown on Mineral Soil over Peat in Central Hokkaido, Japan |
| title_sort | impact of management practices on methane emissions from paddy grown on mineral soil over peat in central hokkaido japan |
| topic | crop residues water regime crop rotation temperate region |
| url | http://www.mdpi.com/2073-4433/9/6/212 |
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