| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Little is known about seasonal variation in carbon cycling with tree phenology in lowland Bornean tropical rainforests where there is little seasonality in temperature and precipitation. The objective of this study is to know how respiration and production of root and stem change with soil water availability.
Woody tissue respiration was positively related with soil water content. Stem growth was different among tree species, but stem growth was low in severe dry period and high in wet period for most tree species. LAI was also increased with soil water content. On the other hand, soil respiration and fine root respiration and biomass were not related to soil water availability. These results imply that seosonal variation in carbon cycling in this forest is relatively conservative even though there is clear phenology for some tree species with soil water availability.
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