| Co-Investigator(Kenkyū-buntansha) |
村山 昌平 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 総括研究主幹 (30222433)
中路 達郎 北海道大学, 北方生物圏フィールド科学センター, 准教授 (40391130)
斎藤 琢 岐阜大学, 流域圏科学研究センター, 助教 (50420352)
野田 響 国立研究開発法人国立環境研究所, 地球環境研究センター, 主任研究員 (60467214)
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| Budget Amount *help |
¥40,950,000 (Direct Cost: ¥31,500,000、Indirect Cost: ¥9,450,000)
Fiscal Year 2017: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2015: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2014: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
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| Outline of Final Research Achievements |
We aimed to investigate the carbon cycle processes in cool-temperate deciduous forest ecosystems in changing environments. Responses of leaf photosynthesis and its phenology, and soil respiration to rising temperature due to climate change were examined by open-field warming experiments in the studied forest. Development of optical remote sensing technique for canopy observations, and advancement of process-based simulation model were also conducted for spatio-temporal scaling analyses of photosynthesis and respiration in current and future environments. Multi-year observations of CO2 flux by eddy-covariance technique revealed that warmer spring induced earlier leaf expansion and hence higher photosynthesis at forest level, which were also supported experimentally by the canopy warming experiment and model predictions. The higher air temperature in autumn was suggested to lead higher ecosystem respiration, which was also supported by the soil warming experiment and a model analysis.
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