Mineralization of Nitrogen and N_2O Production Potentials in Acid Forest Soils under Controlled Aerobic Conditions
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概要
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Some acid surface mineral soils from different forest vegetations and sites in central Japan were taken during April and October in 2003 to study the net N mineralization and N_2O production potentials in the laboratory. Under the controlled aerobic conditions, 50 Pa C_2H_2 in the headspace can be used to study total gaseous-N losses during the aerobic mineralization and heterotrophic N_2O production in acid forest soils. The net N mineralization of these acid forest soils and N_2O-N production was variable with forest stands and with seasons, probably because of the quality of the litters and the variations of soil attributes. Three deciduous forest soils during two sampling reveal a higher potential for the total gaseous-N loss during the aerobic mineralization as compared with two coniferous forest soils. Heterotrophic nitrification among these acid forest soils accounted for the range from 37.0 to 76.3% of the total N_2O production under the experimental conditions, and was variable with forest stands and with seasons. Some factors regulating the net N mineralization and N_2O-N production were discussed in these acid forest soils.
- 社団法人日本土壌肥料学会の論文
著者
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Inubushi Kazuyuki
Faculty Of Horticulture Chiba University
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Inubushi Kazuyuki
Faculty Of Agriculture The University Of Tokyo
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Inubushi Kazuyuki
Graduate School Of Horticulture Chiba University
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Inubushi Kazuyuki
Chiba Univ. Chiba Jpn
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Xu Xingkai
Faculty of Horticulture, Chiba University
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Xu Xingkai
Inst. Of Atmospheric Physics Chinese Acad. Of Sci. Beijing Chn
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