四川桢楠生长特性与分布  

Study on the growth characteristics and distribution of Phoebe zhennan in Sichuan

作　　者：张炜[1] 何兴炳 唐森强 何涛 辜云杰[1] 宋鹏[1] 龙汉利[1] 李晓清[1] 

机构地区：[1]四川省林业科学研究院,成都610081 [2]宜宾市林业科学研究院 [3]长宁县林业局 [4]平武县林业局

出　　处：《林业科技开发》2012年第5期38-41,共4页China Forestry Science and Technology

基　　金：国家林业局公益性行业专项"盆周山地珍贵用材树种选育与培育技术研究(编号:200904044)";四川省突破性林(竹)新品种选育(编号:2011YZGG-10)

摘　　要：对四川桢楠资源进行了初步调查,并选取标准木进行树干解析,分析了桢楠的胸径、树高和材积生长规律。结果表明:四川省的气候条件和土壤条件适宜桢楠生长,90年树高平均可达33.80 m,胸径(去皮)平均可达43.10 cm,材积(去皮)平均生长量达2.236 m3。Logistic曲线对桢楠树高、胸径和材积生长动态有较好的拟合效果,其回归方程分别为:y=35.117/(1+9.466×e-0.059x),y=54.937/(1+15.921×e-0.045x),y=4.029/(1+67.750×e-0.048x)。桢楠平均生长量高峰的出现以树高,胸径,材积为序,符合一般林木的生长规律;桢楠在前50年左右材积生长缓慢,之后进入快速生长期,90年左右时生长速度仍未见明显减缓。Based on the investigation and stem analysis of Phoebe zhennan in Sichuan, the growth pattern of height, DBH and volume of Phoebe zhennan in Sichuan Province were studied. The results showed that the climatic conditions and soil conditions in Sichuan were suitable for the growth of Phoebe zhennan. The average height of 90-year-old tree reached 33.80 m, with average DBH 43.10 cm and volume 2. 236 m3. The growth dynamic models of height,DBH and volume of Phoebe zhennan were established with the Logistic Equation. Three regression equations were： y = 35.117/（ 1 ＋ 9. 466× e ^- 0. 059x ）, Y = 54. 937/（ 1 ＋ 15.921 × e -0. 04sx ）, Y = 4. 029/（ 1 ＋ 67. 750 × e- 0 048x ）. Mean increment of tree height, diameter breasthigh and volume will reach their respective climax in succession, so their growth tallies with the general growth regularity of trees. Growth rate was slow until 50 years before they reach the growth peak, still there was no apparent slow down after 90th year.

关 键 词：桢楠 树干解析 生长特性 

分 类 号：S688.4[农业科学—观赏园艺]