摘要
通过对加格达奇地区10个种源的34年生长白落叶松木材基本密度和气干密度的分析,结果表明:基本密度最大的为天桥岭种源(0.462 g?cm-3),最小的为小北湖种源(0.422 g?cm-3);基本密度变异系数最大为鸡西种源(12.04%),最小的为露水河种源(6.43%)。气干密度最大的是天桥岭种源(0.562 g?cm-3),最小的为小北湖种源(0.506g?cm-3),气干密度变异系数最大的为小北湖种源(15.41%),最小的为露水河种源(7.59%)。10个种源的长白落叶松基本密度和气干密度均存在着丰富的变异。天桥岭种源基本密度和气干密度均大于其他各种源。
Basic density and air-dry density of 34-year-old Larix olgensis from 10 provenance were analyzed in the Jiagedaqi Region. Result shows that：basic density of the Tianqiaoling Provenance is the largest,being 0. 462 g·cm-3,the smallest is the Xiaobeihu Provenance,being 0. 422 g·cm-3. The maximum variationcoefficient of basic density is Jixi Provenance,being 12. 04%,the lowest variation coefficient of the basic density is Lushuihe Provenance,being 6. 43%. The maximum air-dry density is Tianqiaoling Provenance,being 0. 562 g·cm-3,the smallest air-dry density is the Xiaobeihu Provenance,being 0. 506 g·cm-3. The maximum variation coefficient of air-dry density is the Xiaobeihu Provenance,being15. 41 %,the smallest variation coefficient of air-dry density is Lushuihe Provenance,being 7. 59%. The basic density air-dry density of 10 provenances for Larix olgensis exist abundant variation. Basic density air-dry density of the Tianqiaoling Provenance are greater than that of other provenance.
作者
唐仲秋
郑秀云
刘学爽
胡明华
刘会锋
Tang Zhongqiu;Zheng Xiuyun;Liu Xueshuang;Hu Minghua;Liu Huifeng(Agro forestry Academy of Sciences,Daxing ＇ anling Region,Daxing ＇ anlingl 65000,China;Administration Bureau of Duobukuer Nature Reserve in Heilongjiang Province,Jiagdaqi 165000,China;National Positioning and Observing Station of Nenjiangyuan Forest Ecosystem,Heilongjiang Province,Daxing＇anling 165000,China)
出处
《防护林科技》
2018年第8期50-52,共3页
Protection Forest Science and Technology
基金
林业科技创新平台运行补助项目(2018-LYPT-DW-113)
关键词
长白落叶松
基本密度
气干密度
变异
Larix olgensis
basic density
air dry density
variation
