Experimental Studies on the Influence of Trampling to the Morphology of Young Tree of Zelkova serrata MAKINO

Abstract

The influences of trampling to the morphology of three-years-old seedlings of Zelkova serrata MAKINO planted in a container buried in the ground were investigated with different trampling area such as all, half, quarter, and control. The deterioration of physical properties of soil by trampling were up to 20 cm in depth, especially up to 10 cm. In the compact soil, lateral root and the elongation of medium root were restricted, and the medium roots were thinner than control. And, the number of branch having more than two elongation-periods was fewer, and leaf/wood ratio in dry weight was lesser than the control.