Affiliation: | (1) Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan;(2) Department of Land Resources Management and Environmental Protection, Mekelle University, P.O. Box 231, Mekelle, Ethiopia;(3) Social, Economic and Geographical Sciences Group, The James Hutton Institute, Craigiebuckler, Aberdeen, AB15 8QH, Scotland, UK |