| Budget Amount *help |
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
We aimed to examine the relationship between the abundance of honeybees (Apis cerana) and landscape structure in Hyuganatsu citrus (Citrus tamurana) orchards in Aya Town, Miyazaki Prefecture, Japan. Our analyses showed that the number of honeybee visits was higher in Hyuganatsu orchards surrounded by larger areas of natural forests and agricultural lands. This result suggests that reconversion from planted forests to natural forests near agricultural lands is effective in enhancing local pollination services.
We also investigated the relationship between understory vegetation types in planted forests and several environmental factors. The understory vegetation types consisted of canopy layer species in lucidophyllous forests developed in planted forests adjacent to natural forests. We examined the optimal harvest schedule for the reconversion from planted forests to natural forests, considering the spatial restriction that the stands to be harvested must be neighboring natural forests.
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