太行山北部蒙古栎次生林单木生长规律  

Tree Growth Regulation for Individual Tree of Natural Secondary Quercus mongolica Forest in North Taihang Mountains

作　　者：王超 尤海舟 刘朝华 高鹏 高云昌 WANG Chao;YOU Hai-zhou;LIU Zhao-hua(Hebei Institute of Forestry and Grassland Science,Shijiazhuang,Hebei 050061;Hebei Fengning Desert Ecosystem Research Station,Fengning,Hebei 068350;Hebei Hongyashan State Owned Forest Farm,Yixian,Hebei 074200)

机构地区：[1]河北省林业和草原科学研究院,河北石家庄050061 [2]河北丰宁沙地生态系统国家定位观测研究站,河北丰宁068350 [3]河北省洪崖山国有林场,河北易县074200

出　　处：《安徽农业科学》2022年第8期97-99,262,共4页Journal of Anhui Agricultural Sciences

基　　金：河北省重点研发计划项目(20326810D);河北省林业科技计划项目(1901001)。

摘　　要：以太行山北部蒙古栎次生林为研究对象,通过标准地调查及树干解析等方法获取生长数据,分析了蒙古栎优势单木的生长规律。结果表明:树高生长速生期0~30 a,在10 a达到0.7 m的生长高峰;胸径生长速生期10~40 a,在15 a达到1.1 cm的生长高峰;材积生长速生期15~45 a,在30 a达到0.019 m^(3)的生长高峰。树高、胸径和材积的生长率及胸高形数随树龄增加均呈下降趋势,在35 a后下降趋于平缓,胸高形数稳定在0.5以下。材积连年生长量曲线和多年平均生长量曲线相交于45 a,此时林分蓄积量达到数量成熟阶段,进入主伐期。Based on the research area of North Taihang Mountains,this paper took natural secondary Quercus mongolica forest as the research object and obtained the growth data by means of typical sample investigation and stem analysis.The fast-growing period of tree height is 0-30 years,and it reached the growth peak of 0.7 m at 10 a;the DBH grew at a fast growth period of 10-40 years and reached a growth peak of 1.1 cm at 15 a;the rapid growth period of volume was 15-45 a,reaching the growth peak of 0.019 m^(3) at 30 years.The growth rate of tree height,DBH and volume and the number of breast height shapes decreased with the increase of tree age.After 35 years,the decline tended to be gentle,and the number of breast height shapes stabilized below 0.5.The continuous annual growth curve and the multi-year average growth curve intersected at 45 years.At this time,the stand volume reached the quantitative maturity stage and enters the main cutting period.

关 键 词：蒙古栎次生林 生长规律 树干解析 连年生长量 平均生长量 

分 类 号：S792.186[农业科学—林木遗传育种]