GLOBAL MONTHLY ENVIRONMENTAL FLOW REQUIREMENT BASED ON THE NET PRIMARY PRODUCTIVITY OF RIVERS
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- SHINOZAKI Yui
- 筑波大学大学院 システム情報工学研究科
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- FUJIWARA Masashi
- 筑波大学大学院 システム情報工学研究科
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- SHIRAKAWA Naoki
- 筑波大学システム情報系
Bibliographic Information
- Other Title
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- 河川純一次生産力に基づく全球月別環境流量必要量の推定
Abstract
A constant environmental flow requirement (EFR) is insufficient to protect river ecosystems supported by seasonal flow fluctuations. The objective of this research is to estimate global monthly environmental flow requirements using a fluvial plant biomass model to highlight the timing and magnitude of the maximum flow requirements. The average global EFR estimated by this model was 45% of mean annual discharge. In contrast, the maximum monthly EFR was 149% which was tripled to the average EFR. The maximum monthly EFR is larger in the area where the primary productivity as well as seasonal fluctuation of flow are large. For such regions, not only base flow but also maximum EFR should be considered. In order to validate this model, we compared the EFR calculated by three global models and 28 places in 17 countries. The verification indicated that our model has the highest accuracy among the compared global models.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 74 (6), II_85-II_92, 2018
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390845713071827840
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- NII Article ID
- 130007627380
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- ISSN
- 21856648
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed