摘要
通过对校园后山人工湿地松林的生长量进行调查,选取标准地,根据平均直径、树高、形数确定平均标准木,按照树干解析的程序,获取外业数据,分析胸径、树高、形数、材积和生长率等因子的生长规律。研究表明:湿地松的胸径和树高总生长量在23年前一直在增加,但树高在前期增长速度明显高于后期,而胸径平均增长量比较稳定。材积平均生长量和连年生长量一直呈现增加的趋势,还没达到数量成熟龄。可见校园后山湿地松目前仍处在生长旺盛期。
Investigation on plantation of Pinus elliotii Englem growth after school Hill, In order to Pinus elliotii En- glem cultication,we chose the standard site, based on the average diameter, tree height, form factor, Determine the average standard wood, in accordance with the stem analysis procedures, access to the industry data, analysis of DBH, tree height, form factor, volume and growth rate of growth rules. The results show that Pinus elliotii Englem DBH and tree height growth in 23 years ago has been increased, but the tree is high in the early growth rate signifi- cantly higher than that in the later stages, while the average DBH growth is relatively stable. Average volume growth and annual growth rate has been showing increasing tendcency, yet it doesn＇ t reach the age of quantitative maturity. Pinus elliotii Englem after the mountain is still in the growth period of vigorous.
出处
《林业科技情报》
2015年第4期29-32,共4页
Forestry Science and Technology Information
关键词
湿地松
胸高形数
生长量
生长率
Pinus elliotii Englem
breast height form factor
growth
growth rate
