Effects of fire disturbance on greanhouse gas emission from Larix gmelinii-Carex schmidtii forested wetlands in XiaoXing‘an Mountains, Northeast China Vegetation carbon storage in Larix gmelinii plantations in Great Xing’an Mountains. Different Attractive Effects and EAG Responses of Ips subelongatus(Coleoptera,Scolytidae) and Its Predator Thanasimus substriatus (Coleoptera: Cleridae) to Ipslures STUDY ON STEM RESPIRATION OF LARIX GMELINII OF DIFFERENT AGES AND ITS RELATIONSHIP TO ENVIRONMENTAL FACTORS