TY - Journal of Yangtze River Scientific Research Institute A1 - LIU Feng-li, HUANG Guo-bing T1 - Research Progress in Formation Mechanism of Urban Drought-Flood Abrupt Alternation and Urban Waterlog Prevention System Y1 - 2012-11-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 28 EP - 32 VL - 29 IS - 11 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2012.11.006 ER -