桂西南地区擎天树人工林生长规律  

A study on the growth rhythm of Shorea chinensis plantation in southwest of Guangxi

作　　者：黄松殿 段文雯[2] 苏勇 秦武明[2] 韦中绵 梁机[2] 

机构地区：[1]广西南宁良凤江国家森林公园,南宁530031 [2]广西大学林学院

出　　处：《林业科技开发》2011年第2期66-69,共4页China Forestry Science and Technology

基　　金：广西"十一五"林业科技研究项目"珍贵树种擎天树种质资源调查与保存;生长规律和木材材性研究"(编号:桂林科字(2010-19))

摘　　要：采用树干解析的方法对桂西南地区擎天树人工林的生长规律进行研究,结果表明:32年生擎天树人工林的树高、胸径、单株材积分别为23.1 m、23.4 cm0、.516 53 m3。树高、胸径连年生长曲线和平均生长曲线均出现多次相交,且变动幅度剧烈,连年生长量在24年前后均出现明显的下降过程。而材积的变动幅度相对要小,在数量上还未达到成熟。胸径的高生长期、低生长期与树高的年份基本一致,反映了从西双版纳地区引种的擎天树在桂西南地区生长对当地气候变化十分敏感。所拟合的生长预测模型具有很高的精确度,其中,树高、胸径的最优生长模型是理查德模型,材积最优生长模型为考尔夫模型。The growth rhythm of Shorea chinensis plantation in southwest of Guangxi was studied using the method of stem analysis.The results showed that： the height,DBH and volume of 32-year-old Shorea chinensis plantation were 23.1 m,23.4 cm,0.516 53 m3,respectively.The annual growth curve of height and DBH intersected with the average growth curve multiple times and changed drastically,the annual growth decreased obviously around the 24 th year;but the volume changed relatively less than the height and DBH,and it did＇t reach the age of quantitative maturity.The high growth rate and low growth rate of the DBH consistent with the year of the height growth,it reflected that the Shorea chinensis which was introduced from Xishuangbanna region was very sensitive to the local climate change in southwest of Guangxi.The growth forecasting models which were chosen to fit models had high accuracy,and the Richards model was superior to the growth process of the height and DBH,the Korf model was superior to the growth process of the volume.

关 键 词：擎天树 树干解析 生长规律 生长模型 

分 类 号：S791.27[农业科学—林木遗传育种]