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Adaptation to climate change and conservation of biodiversity using green infrastructure

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Title: Adaptation to climate change and conservation of biodiversity using green infrastructure
Authors: Nakamura, Futoshi Browse this author →KAKEN DB
Ishiyama, Nobuo Browse this author →KAKEN DB
Yamanaka, Satoshi Browse this author
Higa, Motoki Browse this author
Akasaka, Takumi Browse this author →KAKEN DB
Kobayashi, Yoshiko Browse this author
Ono, Satoru Browse this author
Fuke, Nao Browse this author
Kitazawa, Munehiro Browse this author
Morimoto, Junko Browse this author →KAKEN DB
Shoji, Yasushi Browse this author →KAKEN DB
Keywords: adaptation strategy
flood risk management
green infrastructure
red-crowned crane
Issue Date: Jul-2020
Publisher: John Wiley & Sons
Journal Title: River research and applications
Volume: 36
Issue: 6
Start Page: 921
End Page: 933
Publisher DOI: 10.1002/rra.3576
Abstract: In recent years, we have experienced mega-flood disasters in Japan due to climate change. In the last century, we have been building disaster prevention infrastructure (artificial levees and dams, referred to as "grey infrastructure") to protect human lives and assets from floods, but these hard protective measures will not function against mega-floods. Moreover, in a drastically depopulating society such as that in Japan, farmland abandonment prevails, and it will be more difficult to maintain grey infrastructure with a limited tax income. In this study, we propose the introduction of green infrastructure (GI) as an adaptation strategy for climate change. If we can use abandoned farmlands as GI, they may function to reduce disaster risks and provide habitats for various organisms that are adapted to wetland environments. First, we present a conceptual framework for disaster prevention using a hybrid of GI and conventional grey infrastructure. In this combination, the fundamental GI, composed of forests and wetlands in the catchment (GI-1) and additional multilevel GIs such as flood control basins that function when floodwater exceeds the planning level (GI-2) are introduced. We evaluated the flood attenuation function (GI-1) of the Kushiro Wetland using a hydrological model and developed a methodology for selecting suitable locations of GI-2, considering flood risk, biodiversity and the distribution of abandoned farmlands, which represent social and economic costs. The results indicated that the Kushiro Wetland acts as a large natural reservoir that attenuates the hydrological peak discharge during floods and suitable locations for introducing GI-2 are concentrated in floodplain areas developing in the downstream reaches of large rivers. Finally, we discussed the network structure of GI-1 as a hub and GI-2 as a dispersal site for conservation of the Red-crowned Crane, one of the symbolic species of Japan.
Rights: This is the peer reviewed version of the following article: "Adaptation to climate change and conservation of biodiversity using green infrastructure. River Research and Applications; 2020.", which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中村 太士

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