Effect of slope on growth of three hard broadleaved tree species in Northeast China

Abstract

Analysis on tree hegiht and diameter(DBH) growth of the belt-mixed plantations ofFraxinus mandshurica, Phellodendron amurense andJuglans mandshurica(panted in 1986) were conducted by using the methods of variance analysis and multiple comparison. The results show that the position of slope is a significant physical factor to affect height growth and DBH growth.Fraxinus mandshurica grew best at meddle hill.Juglans mandshurica grew best at mid-down slope, andPhellodendron amurense grew best at down slope. The analysis of the positive edge effect was also made for belt-mixed plantation ofJuglans mandshurica and Larix dahurica. The result indicated thatLarix dahurica presented positive edge effect to growth ofJuglans mandshurica present.