1. Graduate School of Agricultural and Life Sciences, The University of Tokyo
2. National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure, Transport and Tourism
3. Graduate School of Agriculture, Kyoto University
4. Faculty of Life and Environmental Sciences, University of Tsukuba
5. Civil Engineering Research Institute for Cold Region, Public Works Research Institute
6. Graduate School of Agriculture, Tokyo University of Agriculture and Technology
7. Japan Conservation Engineers & Co., Ltd.
8. Faculty of Symbiotic Systems Science, Fukushima University