TY - Acta Geographica Sinica A1 - T1 - Y1 - 2015-11-20 17:17:57.727 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 1855 EP - 1856 VL - 70 IS - 11 UR - {https://www.geog.com.cn/EN/10.11821/dlxb201511014} N1 - 10.11821/dlxb201511014 ER -