TY - Acta Geographica Sinica A1 - QIAN Caiyun,GONG Jie,ZHANG Jinxi,LIU Dongqing,MA Xuecheng T1 - Change and tradeoffs-synergies analysis on watershed ecosystem services: A case study of Bailongjiang Watershed, Gansu Y1 - 2018-05-03 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 868 EP - 879 VL - 73 IS - 5 UR - {https://www.geog.com.cn/EN/10.11821/dlxb201805007} N1 - 10.11821/dlxb201805007 ER -