RT Journal T1 The characteristics of oasis urban expansion and drive mechanism analysis: a case study on Ganzhou District in Hexi Corridor, China A1 HuaLi Tong, PeiJi Shi, GuoFeng Zhu, April Pearson, QianGuo Li, YuanFeng Liu, HaiLong Liu PB Sciences in Cold and Arid Regions FD 2015-06-01 YR 2015 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 7 IS 3 SP 282 DO 10.3724/SP.J.1226.2015.00282 K1 oasis cities;Ganzhou District;urban expansion;GIS LK {http://www.scar.ac.cn/EN/article/article_235.shtml}