[1] Northeast Normal Univ, Sch Geog Sci, Key Lab Geog Proc & Ecol Secur Changbai Mt, Minist Educ, Changchun, Peoples R China
[2] Northeast Normal Univ, Inst Peat & Mire Res, State Environm Protect Key Lab Wetland Ecol & Vege, Changchun, Peoples R China
[3] Jilin Prov Key Lab Wetland Ecol Proc & Environm Ch, Changchun, Peoples R China
[4] Univ Laval, Peatland Ecol Res Grp, Quebec City, PQ, Canada
[5] Univ Laval, Ctr Northern Studies, Quebec City, PQ, Canada
[6] UNSW Sydney, Sch Biol Earth & Environm Sci, Kensington, NSW 2033, Australia
[7] Univ Paul Sabatier, Lab Ecol Fonct & Environm LEFE, CNRS, Toulouse, France
[8] Northeast Normal Univ, Sch Geog Sci, Key Lab Geog Proc & Ecol Secur Changbai Mt, Minist Educ, Renmin 5268, Changchun 130024, Peoples R China