TY - Journal of Resources and Ecology A1 - LIU Fang, ZHANG Hongqi, XU Erqi, KANG Lei T1 - Responses of Grassland Net Primary Productivity to Environmental Variables in Northern China Y1 - 2016-04-12 08:51:46.593 JF - Journal of Resources and Ecology JO - Journal of Resources and Ecology SP - 92 EP - 100 VL - 7 IS - 2 UR - {https://www.jorae.cn/EN/10.5814/j.issn.1674-764x.2016.02.003} N1 - 10.5814/j.issn.1674-764x.2016.02.003 ER -