Abstract: Larix gmelini forest at Daxingan Mountains fruited again in1991 after 1989's fruitage. The average fruiting rate is 63.8％, and most fruited trees are found on burned stands. The fruiting rate of larch trees with a DBHover 28cm is more than 80％, and most of these trees(more than 85％) have a sparse crown. Many fruited cones are mainly located in the middle part of crown. Most short branches are 1-2 years old, but the fruited short branches are 3-7 years old. Every seed year needs to consume many short branches. Most flower buds are male ones, but female flower used for forming cones is only 20％. Therefore, the higher the existing rate of ripe short branch is, the greater the fruiting potential and the possibility of occurred seed year are.

Key words: Larix gmelini, Fruiting characteristics, Short branch age, Seed year