A high-resolution dynamic vegetation model based on ecological mechanisms and the vegetation patterns at the geographic-scale
| Project/Area Number |
21710026
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
ISHII Reiichiro 独立行政法人海洋研究開発機構, 地球環境変動領域, 研究員 (40390710)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 植生変動モデル / 地形スケール / 生態学的プロセス / 衛星画像解析 / 土壌水分-植物間相互作用 / レジームシフト / 国際情報交換 / モンゴル |
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| Research Abstract |
A fine-scale vegetation transition model was developed based on the observation data from Mongolia, where slope aspect-dependent and discontinuous vegetation transition pattern is widely observed. The dynamics of plants' biomass and soil water content(SWC) with biological interactions are calculated in the meshed target space(res=90m). The"facilitation effect"among plants over soil water amplified the difference in SWC caused by the topography and was the key to generate the observed discontinuous vegetation pattern. By adding the herbivory effect with feasible parameters to this model, we could show the possible future projections for vegetation change under various scenarios with changing climate and livestock density. It tells that drastic and irreversible vegetation degradation, deforestation might occur at some critical point of decrease of precipitation and/or increase in livestock.
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Report
(4 results)
Research Products
(28 results)
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[Journal Article] Variation in nitrogen isotopic composition in the Selenga river waters hed2012
Author(s)
Hyodo, F., Nishikawa, J., Kohzu, A., Fujita, N., Saizen, I., Tsogtbaatar, Javzan, C., Enkhtuya, M., Gantomor, D., Amartuvshin, N., Ishii, R., Wada
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Journal Title
Limnology
Volume: (In press)
Pages: 1439-8621
Related Report
Peer Reviewed
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[Journal Article] Variation in nitrogen isotopic composition in the Selenga river watershed2011
Author(s)
Hyodo, F., Nishikawa, J., Kohzu, A., Fujita, N., Saizen, I., Tsogtbaatar, Javzan, C., Enkhtuya, M., Gantomor, D., Amartuvshin, N., Ishii, R. & Wada, E.
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Journal Title
Limnology
Volume: 13
Issue: 1
Pages: 155-161
DOI
Related Report
Peer Reviewed
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