RT Journal T1 Carbon and Nitrogen Contents and Enzyme Activities of Soil in Peatland of Permafrost Region in Greater Hinggan Mountains under Exogenous Nitrogen Input A1 PB Wetland Science FD 2022-04-28 YR 2022 JF Wetland Science JO Wetland Science VO 20 IS 2 SP 196 DO 10.13248/j.cnki.wetlandsci.2022.02.007 K1 LK {http://wetlands.neigae.ac.cn/EN/article/article_9964.shtml}