红安县枫香天然次生林生长规律研究

Study on Growth Law of Liquidambar formosana in Natural Secondary Forest

摘要:

摘要：在湖北省红安县爱河村的枫香天然次生林设置临时标准样地，并选取标准木进行解析和测定，对枫香的生长规律进行研究。结果表明：枫香的胸径、树高生长快速期都出现在早期，均在30 a生前达到最快生长；胸径的连年生长量与平均生长量曲线在第38 a生时相交，树高的连年生长量与平均生长量曲线在26 a和34 a生时相交；30 a生以后胸径、树高生长均逐渐减弱。枫香材积的连年生长量在10～40 a时一直呈现较快的增长趋势，40 a以后增长很慢，在50 a生时达到最大值；而材积的平均生长量一直表现为平稳的增长趋势。

Abstract:

Abstracts:The standard plots were set up in natural secondary forest of Liquidambar formosana in Aihe village,Hongan County, Hubei Province, and then the selected standard trees were analyzed and measured, and the growth and development law of L. formosanawas studied. The results showed that the fast growing phase of DBH and tree height appeared at the early stage and their growth summits reached within the tree age of 30 years.The annual increment curve of DBH intersected with its average increment curve in the 38th year.And the annual increment curve of tree height intersected with its average increment calve in the 26th year and 34th year.The growth of DBH and height showed a declining trend after the tree age of 30 years.The annual increment of timber volume showed the fast increasing tendency between the tree age of 10 years and that of 40 years,while it increased slowly after the tree age of 40 years and reached the maximum at the tree age of 50 years.But the average increment of timber volume always showed a steady increasing tendency.