| Budget Amount *help |
¥38,090,000 (Direct Cost: ¥29,300,000、Indirect Cost: ¥8,790,000)
Fiscal Year 2019: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2018: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2017: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2016: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
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| Outline of Final Research Achievements |
This study aimed to clarify the decomposition process in a tropical forests, focusing on the diverse spatial distribution of dead organic matter (litter) produced by the three-dimensional structure of the forests. For this purpose, the decomposition tests using different kinds of litter bags were conducted. As a result, it was clarified that the decomposition rate varied depending on the locations where litter has dropped and the size of dead roots affects on the decomposition rate. In addition, it became clear that the time of occurrence of dead roots varied greatly depending on the location in the forest. Furthermore, it was revealed that soil animal communities had a significant impact on the decomposition. Our study also suggested that nearly 40% of the soil CO2 flux caused by the root litter decomposition.
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