1. Arid Land Research Center; Tottori University; Hamasaka Tottori Japan
2. Hebei Academy of Forestry Science; Shijiazhuang China
3. Laboratory of Quantitative Vegetation Ecology; Institute of Botany; Chinese Academy of Sciences; Beijing China
4. School of Agriculture; Tokai University; Aso Kumamoto Japan
5. Faculty of Agriculture; The University of Tokyo; Bunkyou-ku Tokyo Japan
6. Department of Soil Science; Faculty of Agriculture, Forestry and Wildlife Resources Management; University of Calabar; Calabar Nigeria
7. Nagoya City University; Midori-ku Nagoya Japan
8. Institute of Technologists; Gyouda Saitama Japan