RT Journal T1 The Estimation and Analysis of Spatio-Temporal Change Patterns of Carbon Functions in Major Grain Producing Area A1 DU Jiang, LUO Jun, WANG Rui, WANG Xin-hua PB Journal of Ecology and Rural Environment FD 2019-10-25 YR 2019 JF Journal of Ecology and Rural Environment JO Journal of Ecology and Rural Environment VO 35 IS 10 SP 1242 DO 10.19741/j.issn.1673-4831.2019.0192 K1 greenhouse gas;crop farming;agricultural carbon emission;life cycle analysis;carbon footprint LK {http://www.ere.ac.cn/EN/article/article_11717.shtml}