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, Tokyo University of Agriculture and Technology
4. Civil Engineering Research Institute for Cold Region, Public Works Research Institute
5. Faculty of Life and Environmental Sciences, University of Tsukuba
6. Graduate School of Agriculture, Kyoto University
7. Japan Conservation Engineers & Co., Ltd.
8. Faculty of Symbiotic Systems Science, Fukushima University