An Experimental Study on the Effects of Wind and Propping on the Growth of Liriodendron tulipifera L.

Abstract

The purpose of this experiment is to clarify the influence of wind and propping on growth of 2-year-old tulip tree (Liriodendron tulipifera L.). To compare the tree growth, we set up four kinds of section ((1)Wind, (2)Wind and Propping, (3)Propping, (4)Control). As a result, the growth of a trunk and a branch were controlled in the wind section. In the propping section, the enlarge growth of a trunk were controlled. On the other hand in the wind and propping section, the growth of trunk and branch was prevented in general. About the root system, there were more roots in the windward side in the wind section. And in the propping section, there were more roots at the opposite side to the prop. Comparing with these two sections, the root volume in the wind and propping section was districted in all directions.