Taking Larix principis-rupprechtii forest in Xiaowutai Mountain in Hebei Province as the case study

the relationships between forest growth

topography

and herb diversity were studied through field investigation and laboratory analysis. The results showed that:(1) Slope was significant negative correlation with tree height

diameter at breast height

under crown height and canopy size

but tree growth were not significantly correlated with elevation

slope position and slope shape;(2) In terms of correlation coefficients and correlation strength

the effect size of whole forest growth on herb diversity had an order as following:canopy density >under crown height >DBH >height >canopy size;(3) the Shannon-Wiener diversity index and Pielou evenness index showed a relatively stable trend with the increase of altitude from 1400 to 2000 m

and Simpson diversity index and the Menhinick richness index showed a fluctuating trend;(4) The effect of elevation

slope shape and slope gradient on herb diversity was smaller

but slope position showed a significant negative correlation with Menhinick richness index and Simpson diversity index of herbs

indicating that the impact of slope position change on herb diversity was greater.