TY - Acta Geographica Sinica A1 - WEI Min, FENG Yongjun, LI Fen, ZHENG Yuqing T1 - Emergy Analysis of Tourism Ecological System of Tai'an City Y1 - 2012-09-20 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 1181 EP - 1189 VL - 67 IS - 9 UR - {https://www.geog.com.cn/EN/10.11821/xb201209003} N1 - 10.11821/xb201209003 ER -