TY - Journal of Jishou University(Natural Sciences Edition) A1 - GUAN Rui, HUANG Yi, YANG Yichi, WANG Xianhan, JIANG Zhujun T1 - Variation Characteristics of PM2.5 Mass Concentration in Zhangjiajie During Tourist Season Y1 - 2020-07-25 JF - Journal of Jishou University(Natural Sciences Edition) JO - Journal of Jishou University(Natural Sciences Edition) SP - 68 EP - 73 VL - 41 IS - 4 UR - https://zkxb.jsu.edu.cn N1 - 10.13438/j.cnki.jdzk.2020.04.012 ER -