InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110016,P.R.China;
NortheastForestryUniversity,Harbin150040,P.R.China;
CollelgeofLifeScience,JilinUniversity,Changchun130000,P.R.China;
LiaoningAcademyofForestryScience,Shenyang110032,P.R.China;
白桦; 外源性糖溶液浓度; 二氧化碳浓度升高; 蛋白质; 糖类; 树叶;