RT Journal T1 A1 PB 地理学报(英文版) FD 2011-10-15 YR 2011 JF Journal of Geographical Sciences JO 地理学报(英文版) VO 21 IS 5 SP 949 DO 10.1007/s11442-011-0892-z K1 LK {http://www.geogsci.com/CN/article/article_22737.shtml}