樟子松不同更新位置幼树高生长规律的研究  

Law of Height Growth of Regenerated Pinus sylvestris var.mongolicaSaplings in Different Sites

作　　者：曹志伟[1] 司海忠[2] 张玉柱[1] 李文艳[2] 毕广有[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》2014年第10期14-16,共3页Protection Forest Science and Technology

摘　　要：在对调查数据统计分析的基础上，探索了4种更新位置樟子松5年生以上幼树树高生长规律，研究结果表明：4种不同更新类型樟子松幼树6年生以后，同龄幼树高都呈现樟子松林缘〉樟子松林隙〉银中杨林内、樟子松林缘〉小黑杨林内〉银中杨林内的趋势；樟子松林隙和小黑杨林内规律性不明显。不同更新位置同龄幼树当年高生长量，呈现樟子松林缘〉小黑杨林内〉樟子松林隙〉银中杨林内的趋势。樟子松林缘、樟子松林隙、小黑杨林内、银中杨林内5～10 a（11a）生樟子松更新幼树年均高生长量范围分别为10.8 cm（5 a）～33.6 cm（11 a）、9.4 cm （5 a）～30 cm（11 a）、9.2 cm（5 a）～26.5 cm（10 a）、9.0 cm（5 a）～25.3 cm（10 a）。On the base of the statistical analysis for survey data,height growth law of four kinds of types for regener-ated saplings which are more than five-year-old were explored.Result shows that:among four different types of re-generated P.sylvestris var.mongolica saplings after six years,regenerated P.sylvestris var.mongolica saplings of the same age are showing the following trend:the forest edge of Pinus sylvestris var.mongolica> the forest gap of P.sylvestris var.mongolica>the forest of Populus alba×P.berolinensis,the forest edge of P.sylvestris var.mon-golica > Populus simonii×P.nigra> the forest of P.alba× P.berolinensis;the regularity between the forest gap of P.sylvestris var.mongolica and the forest of P.simonii×P.nigra is not obvious.The trend of the height growth of the samplings for the same age in the very year is showing the following trend:the forest edge of P.sylvestris>the forest of P.simonii×P.nigra > the forest gap of P.sylvestris var.mongolica>the forest of P.alba×P. berolinensis.The mean height growth of the forest edge of regenerated saplings of P.alba× P.berolinensis,the for-est gap of P.alba× P.berolinensis,the forest of P.simonii×P.nigra & the forest of P.alba× P.berolinensis which are from 5-year-old to 10 or 11-year-old is 10.8 cm (5 a)-33.6 cm (11 a ),9.4 cm (5 a)-30 cm (11 a),9.2 cm(5a)-26.5cm(10a),9.0cm(5a)-25.3cm(10a).

关 键 词：樟子松 人工林 天然更新 更新位置 树高 年均生长量 当年生长量 

分 类 号：S791.253[农业科学—林木遗传育种]