ECOLOGICAL ADAPTATION OF Gordonia acuminata SEEDLINGS IN DIFFERENT LIGHT ENVIRONMENTS
不同光环境的四川大头茶幼苗的生态适应

old year Gordonia acuminata seedlings were grown in full sun light(S100),55% of full sun (S55),33% of full sun (S33) and 18% of full sun light (S18).It has been found that the growth dynamics of G.acuminata seedlings,in terms of number of leaves,leaf area and leaf size,shew significantly difference in the different light environments.The graph of S100 seedling fluctuated largest,due to sun strees on growth in summer.Aboveground growth was the worst at S100 and it was the best at S55,For S55,there it was a growth reduction with reduced light exposure,and the boot growth show a steady increase with increasing light exposure.Principal Component Analysis provided a good explanation for the growth difference and ecological adaptation strategies of G.acuminata seedlings in different light environments.Difference was biggest between S100 and S55.S100 seedlings stood out by their relatively high investment of dry biomass in root grwoth and seedlings that were grown in shadow by their relatively high investment in aboveground leaf growth.