TY - Journal of Resources and Ecology A1 - LI Qingxu, ZHANG Biao, XIE Gaodi, WANG Shuang T1 - Identification of Key Ecosystem Services That Can Be Delivered by Water or Wind from Zhangjiakou-Chengde Region to Beijing Y1 - 2018-11-30 00:00:00.0 JF - Journal of Resources and Ecology JO - Journal of Resources and Ecology SP - 632 EP - 641 VL - 9 IS - 6 UR - {https://www.jorae.cn/EN/10.5814/j.issn.1674-764x.2018.06.006} N1 - 10.5814/j.issn.1674-764x.2018.06.006 ER -