Abstract: The data of 14 soil moisture monitoring sites in four counties of Hebei Province were used to verify the adaptability of soil moisture integrated diagnostic model in semi-humid regions in North China. Models were established by the data of the 14 monitoring sites during 2011-2014, and validated by the data of 2015. The results showed that the models had good adaptability in semi-humid regions of Hebei Province, with the qualified rates of verification being 76.92%-100%. The model parameters for different regions with different precipitations were different. The models for the regions with less precipitation had higher qualified rates of prediction. Belonging to the coastal areas, Luannan and Laoting counties of Tangshan City had temporal precipitation distributions different from the other two inland counties and thus lower qualified rates. Integrated diagnostic model can be used in semi-humid areas of North China.

Key words: seed size, mast seeding, scatter hoarding, seed dispersal., tannin content