The analysis of the arboreal species seed productivity in the natural reserve «Ussuriyskiy»

The phenological observation on tree flowering and seed productivity in the deciduous-cedar forest of the “Ussuriyskiy” Natural Reserve was conducted by the visual Capper's scale method and with the help of seed traps since 2002 to 2011. The research has established that seed yields during the observation years varied significantly, the maximum seed productivity is marked in 2004. The empty seed index of trees increases in dry years.