2018 Fiscal Year Annual Research Report
里山バイオマスのエネルギー有効利用と残渣に含まれる栄養成分のリサイクル
| Project/Area Number |
16F16755
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| Research Institution | The University of Tokyo |
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Principal Investigator |
武内 和彦 東京大学, サステイナビリティ学連携研究機構, 特任教授 (90112474)
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| Co-Investigator(Kenkyū-buntansha) |
MELTS INDREK 東京大学, サステイナビリティ学連携研究機構, 外国人特別研究員
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| Project Period (FY) |
2016-11-07 – 2019-03-31
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| Keywords | Agroforestry / Bioenergy / Long-term experiment / Nature conservation / Semi-natural grasslands / Sustainable development / Wetlands |
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| Outline of Annual Research Achievements |
Conservation and restoration are crucial to maintaining a wide range of functions and services both in semi-natural grasslands and wetlands, but it is difficult to find a reasonable and resource-efficient management option without sacrificing ecological values (e.g., Melts et al., 2018; Melts et al., 2019 (pending)). Typical extensive management of seminatural communities has recently been under pressure, as intensification is suggested to maintain biomass production and economic profits.
Some short-term experiments in applied ecology and agricultural research have demonstrated that nutrient applications in semi-natural grasslands can maintain productivity and will not result in decrease of plant species richness. Those experiments indicate clearly that there is an urgency for a long-term experiments and meta-analysis for detailed understanding of ecosystem functions in different types and areas (Melts et al., 2018). In two long-term field mowing trials on species-rich mesic meadows with and without tree stands (EST and UK), biomass production increased and remained stable without any additional nutrient supply over 50 years, respectively (Melts et al., 2019 (manuscript)). Biodiversity support the resilience of grassland ecosystems and maintenance a stable biomass yield.
Improved knowledge about technologies and comparison of different conversion options and sustainable management of semi-natural communities are needed to promote local bio-economy and sustainable development goals.
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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[Journal Article] Drivers of species richness and community integrity of small forest patches in an agricultural landscape2018
Author(s)
Krista Takkis, Tiiu Kull, Tiit Hallikma, Piia Jaksi, Karin Kaljund, Karin Kauer, Thea Kull, Olavi Kurina, Mart Külvik, Kaire Lanno, Malle Leht, Jaan Liira, Indrek Melts, Hannes Pehlak, Janar Raet, Kaarel Sammet, Kalev Sepp, Ülo Väli; Lauri Laanisto
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Journal Title
Journal of Vegetation Science
Volume: 29
Pages: 978-988
DOI
Peer Reviewed / Int'l Joint Research
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