TY - Journal of Resources and Ecology A1 - CAI Shizhen, ZHANG Xuliang, CAO Yinghui, ZHANG Zhaohui, WANG Wei T1 - Values of the Farmland Ecosystem Services of Qingdao City, China, and their Changes Y1 - 2020-09-30 00:00:00.0 JF - Journal of Resources and Ecology JO - Journal of Resources and Ecology SP - 443 EP - 453 VL - 11 IS - 5 UR - {https://www.jorae.cn/EN/10.5814/j.issn.1674-764x.2020.05.002} N1 - 10.5814/j.issn.1674-764x.2020.05.002 ER -