伯乐树人工林的生长规律

根据来舟林业试验场24年生伯乐树人工林的样地调查资料,选择具有代表性的标准木进行树干解析,研究伯乐树人工林的生长规律.结果表明:胸径和树高连年生长量分别在6、8年时达到最大值,而单株材积连年生长量的最大值出现在第20年;胸径与树高的连年生长量曲线和平均生长量曲线分别相交于7-8和8-10年,树高峰值出现的时间晚于胸径,...

Study on the growth of Bretschneidera sinensis Hemsl.plantation

To study the growth of Bretschneidera sinensis Hemsl.plantation,this paper select representative stand trees for stem analysis in Laizhou National Forestry Trial Farm.The results showed that the current annual increment of DBH and height reached the highest point when the age is 6 and 8,respectively,but the current annual increment of individual volume reached the maximum value at the age of 20;the point of DBH and height,at which the current annual increment intersected mean annual increment,appeared the age of 7-8 and 8-10 years old,respectively,whereas,the individual volume had not intersection during the observation(24 years),which showed that the tree had not reached numerical maturity yet;the Richards growth equations of DBH,height and individual volume were developed by using the Statistica software,and these equations had high prediction accuracy and had no systematic error.Therefore,it revealed the nature of growth of the DBH,height and individual volume,which provided the theory basis for its scientific management.