Soil Respiration in Different Ages of Teak Plantations in Thailand
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概要
- 論文の詳細を見る
Soil respiration is a crucial carbon fiux for determining carbon balance in the forest ecosystem. In Kanchanaburi, western Thailand, we measured soil respiration at different stand ages (1, 6 and 21 year-old) of teak (<I>Tectona grandis</I>) plantations. There were no significant differences in soil respiration among plots of different ages. Soil respiration rates showed a clear seasonal pattern of a high rate in the rainy season from April to November and a low rate in the dry season from December to March. The contribution of organic layer, roots and soil to total soil respiration was 17, 15 and 68%, respectively, in the 6 year-old teak plantation (T-Y plot). Total soil respiration rate was significantly correlated with soil water content in the 0-30 cm layer. The annual amount of CO<SUB>2 </SUB>effiux from the forest fioor was estimated to be 1,062-1,154 gC m<SUP>-2 </SUP>y<SUP>-1 </SUP>in the teak plantations in 1997. In 1998, annual CO<SUB>2 </SUB>effiux declined to 80% of that in 1997 in the T-Y plot, probably due to low rainfall.
著者
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HIRAI Keizo
Forest Products Research Institute
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Limtong Pitayakon
Land Development Department
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TAKAHASHI Masamichi
Forest Products Research Institute
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PANUTHAI Samreong
National Park, Wildlife, Water Conservation Department
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LEAUNGVUTIVIROG Chaveevan
Land Development Department
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ANUSONTPORNPERM Somchai
Thailand Institute of Scientific and Technological Research
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SUKSAWANG Songtam
National Park, Wildlife, Water Conservation Department
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MAROD Dokrak
Faculty of Forestry, Kasetsart University
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