闽东地区檫树中期生长研究

Study on the Growth of Sassafras tsumu Hemsl in Middle Stage in East Fujian Province

选择福建省福鼎后坪国有林场在2010年营造的檫树人工林,采用L_(9)(3^(4))正交试验设计对影响其生长的3个因素(土壤厚度、海拔高度、坡向)进行调查分析。结果表明:中期檫树的胸径、材积生长在不同土壤厚度、海拔高度间的差异达显著水平,坡向间的差异不显著;树高在不同土壤厚度、海拔高度、坡向间的差异不显著。3个因素对胸径、树高、材积生长的影响顺序依次均是土壤厚度、海拔高度、坡向。闽东地区山地檫树造林最适宜选择土壤厚度大于等于80 cm、海拔500~599 m、坡向为半阳半阴坡的立地造林。

The Sassafras tsumu Hemsl plantation built by Fuding Houping State-Owned Forest Farm in Fujian province in 2010 is selected,and L_(9)(3^(4))orthogonal test design is adopted to investigate and analyze the three factors(soil thickness,altitude and slope direction)affecting its growth.The results showed that there are significant differences in DBH and volume of Sassafras tsumu Hemsl in different soil thickness and altitude,but no significant differences in slope direction;the difference of tree height in different soil thickness,elevation and slope direction was not significant.The three factors affected the growth of DBH,tree height and volume in the order of soil thickness,elevation and slope direction.Sassafras tsumu Hemsl planting in eastern Fujian is the best choice for Sassafras tsumu Hemsl planting with soil thickness≥80cm,elevation from 500m to 599m and slope direction being half positive and half negative.