峦大杉与杉木人工林的生长形质、林分分化和空间利用比较  

Comparison of Growth,Stand Differentiation,Form Quality and Space Utilization of Cunninghamia konishii and C. lanceolata Plantation

作　　者：欧建德 吴志庄[2] 康永武 Ou Jiande;Wu Zhizhuang;Kang Yongwu(Mingxi Forestry Bureau,Sanming 365200,P.R.Chin;China National Bamboo Research Center Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Provinc;Shaxian Forestry Burea)

机构地区：[1]福建省明溪县林业局,三明365200 [2]国家林业局竹子研究开发中心(浙江省竹子高效加工重点实验室) [3]福建省沙县林业局

出　　处：《东北林业大学学报》2018年第7期7-11,共5页Journal of Northeast Forestry University

基　　金：福建省属公益类科研院所基本科研专项(2011R1013-2)

摘　　要：以福建省来舟国有林场31年生人工林为研究对象,通过样地的调查数据,分析了峦大杉和杉木生长性状指标。结果表明:峦大杉的平均树高、胸径、单株材积、林分蓄积等生长性状指标显著高于杉木;树种间分级木比例无显著差异,但峦大杉分化略大;峦大杉胸高形数显著高于杉木,枝下高比例显著低于杉木,但树种间的枝下高无显著差异;应用改进可变指数削度方程可以很好地拟合两个树种的干形曲线与干形形状,峦大杉比杉木有着更小的削度、更优的干形和更好的干材品质;峦大杉的平均冠幅、冠长、冠长率、树冠体积、树冠表面积、生长空间指数和竞争指数等显著大于杉木,但峦大杉的树冠圆满度显著小于杉木,树冠更狭长。The sample plot survey were used in 31-year-old plantation in Laizhou State-owned Forest Farm, Fujian Province, and the performance of growth of two species were analyzed through sample survey data. The average tree height, DBH, tree volume, and stand volume of C. konishii were significantly higher than those growth traits of C. lanceolata . There was no significant difference in the proportion of graded wood between the tree species, but the differentiation of C. konishii was slightly larger. The breast height form factor of C. konishii was significantly higher than that of C. lanceolata , the ratio of branche height of C. konishii was significantly lower than that of C. lanceolata , but there was no significant difference in the branch height between the tree species. The stem profile and trunk shape of these two tree species were primely fitting by using the modified variable exponent equation. C. konishii had smaller taper, better stem form and better quality of stem wood by comparing the stem shape and the series stem shape index of two tree species. The average crown width, crown length, crown length, crown volume, crown surface area, GSI and GSCI of C. konishii were significantly higher than those of C. lanceolata , but the crown fullness ratio of C. konishii was significantly less than that of C. lanceolate .

关 键 词：峦大杉 杉木 林木生长形质 林分分化 空间利用 

分 类 号：S722.7[农业科学—林木遗传育种]