嫩江沙地樟子松人工固沙林天然更新特征  

Natural Regeneration Characteristics of Pinus sylvestris var.mongolica Litv.Plantation in Nenjiang Sandland

作　　者：曹志伟[1] 司海忠[2] 李文艳[2] 张玉柱[1] 俞冬兴[1] 邵庆伟[2] 

机构地区：[1]黑龙江省森林与环境科学研究院,黑龙江齐齐哈尔161005 [2]黑龙江省森林与环境科学研究院新江实验林场,黑龙江齐齐哈尔161341

出　　处：《防护林科技》2013年第9期36-40,共5页Protection Forest Science and Technology

摘　　要：在调查分析的基础上,探索了樟子松天然更新苗龄分布、苗高分布、更新苗密度及更新分区规律,研究结果表明,33年生以上的樟子松人工林更新幼苗(树)苗龄主要分布在1～10年;樟子松天然更新幼苗5年生以前生长较缓慢,6年生开始加快生长。在樟子松林墙外缘5～23m范围内,樟子松更新幼苗(树)密度每10m2为10～72株,并且生长较好;林窗更新每10m2为45～350株。在距樟子松母树9～34m杨树林内,樟子松更新稠密,小黑杨林内每10m2达27株,银中杨林内每10m2达到19株。在杨树林内樟子松更新密集区幼苗(树)密度每10m2为11～14株,稀疏区更新幼苗(树)密度每10m2为4～7株。银中杨、小黑杨林内樟子松更新苗密集区最远边界分别达58m、71m,稀疏区最远边界分别为99m、110m。Based on investigation data,the seedling age distribution,seedling height distribution,seedling density regeneration partition were studied.Result shows that： seedling ages of regenerated seedlings above 33-year-old Pinus sylvestris var.mongolica Litv.primarily range from the first year to the tenth year.Seedlings of regenerated seedlings of natural regenerated Pinus sylvestris var.mongolica Litv.grow slower from the first year to the fifth year,and faster from the sixth year to the tenth year.The seedling number in plots range from 10 plants to 72 plants per 10 m2,the plots are situated on Pinus sylvestris var.mongolica Litv.plantation edge,and distances between plots and seed trees are 5-23 m.The seedling number in sampling plots on the bare land in Pinus sylvestris var.mongolica Litv.plantation range from 45 plants to 350 plants per 10 m2.In the thickest regeneration area,the seedling number of plots in Populus simonii×P.nigra plantation,amounts to 27 plants per 10 m2,the seedling number of plots in Populus alba × P.berolinensis plantation amounts to 19 plants per 10 m2.and distances between plots and seed trees are 9-34 m.In dense regeneration area,the seedling number of plots per 10 m2 range from 11 plants to 14 plants.In sparse regeneration area the seedling numbers in plots per 10 m2 range from 4 plants to 7 plants.The farthest boundaries of seedling regeneration in Populus alba × P.berolinensis plantation and Populus simonii×P.nigra plantation in the dense area reach 58 m,71 m,respectively.The farthest boundaries of seedling regeneration in Populus alba × P.berolinensis plantation and Populus simonii×P.nigra plantation in the sparse area reach 99 m,110 m,respectively.

关 键 词：嫩江沙地 樟子松 人工林 小黑杨 银中杨 天然更新 

分 类 号：S791.253[农业科学—林木遗传育种]