摘要
对四川西部暗针叶林采伐迹地几种人工混交群落乔木层结构及动态的研究结果如下：云杉的胸径ＤＢＨ（是白桦的０．３９倍）是青的１．５～２．０倍、川西云杉的１．１倍、四川红杉的１．４倍，其树高（ｈ／ｍ）（是白桦的０．７７倍）是青的１．４～１．６倍、川西云杉的１．１倍、四川红杉的１．２倍，其平均株净生产力（Ｐｉｎｄ／ｍ３·ａ－１）（是白桦的０．０８倍）是青的３．１８～５．４７倍、川西云杉的１．３９倍、四川红杉的２．１８倍．人工更新的白桦＋云杉＋青混交林、云杉＋四川红杉混交林、云杉＋青＋川西云杉混交林、云杉＋青＋油松＋华山松混交林在自然状态下，朝着以云杉为主的森林群落发展．
The average D BH . of Picea asperata is 0.39, 1.5～2.0, 1.1 and 1.4 times larger than that of Betula platyphylla, P. wilsonii, P. balfouriana and Larix mastersiana , respectively. Similarly, the mean height is 0.77, 1.4～1.6, 1.1 and 1.2 times and the average productivity per individual is 0.08, 3.18～ 5.47 , 1.39 and 2.18 times greater than that of the 4 plants. The artificial mixed forests including B. platyphylla & P. asperata & P. wilsonii forest, L. mastersiana & P. asperata forest, P. wilsonii & P. balfouriana & P. asperata forest and P. asperata & P. wilsonii & P. armandi & P. tabulaeformis forest developed naturally toward P. asperata dominated forest.
出处
《应用与环境生物学报》
CAS
CSCD
1998年第4期327-334,共8页
Chinese Journal of Applied and Environmental Biology
基金
中国科学院"九五"重点项目
中国科学院成都地奥科学基金
关键词
暗针叶林
采伐迹地
人工混交群落
知木层
结构
the clear cut area
subalpine dark coniferous forests
structure & dynamics
tree layer
artificial mixed forests
