| 哈尔滨城市人工林天然更新组成结构与年龄结构 |
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| 引用本文： | 孙景波,佟静秋,牟长城,常方圆.哈尔滨城市人工林天然更新组成结构与年龄结构[J].东北林业大学学报,2009,37(2). |
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| 作者姓名： | 孙景波 佟静秋 牟长城 常方圆 |
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| 作者单位： | 东北林业大学,哈尔滨,150040 |
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| 摘 要： | 采用样地网格调查方法和年轮分析法,研究了哈尔滨市6种城市人工林群落(落叶松林、白桦林、水曲柳林、胡桃楸林、黄波罗林和樟子松林)的更新数量、更新树种组成结构和更新幼树年龄结构,以便定量评价其天然更新效果,揭示其自然化过程,探讨城市人工林自然化经营模式.结果表明:6种城市人工林群落天然更新数量分布在4 650～42 934株/hm2之间,均达到了一般更新造林的标准(4 444株/hm2); 6种城市人工林群落更新幼树均是由水曲柳、黄波罗、家榆、糖槭、蒙古栎和胡桃楸所组成,但各群落更新优势种或共优种却存在较大的差异性;6种城市人工林群落更新幼树的年龄结构均是以1～10年生占绝对优势地位(77.27%～99.14%),并以水曲柳更新占优势,11～20年生占次要地位(0.60%～17.85%),以水曲柳、黄波罗和家榆更新占优势,而21～30年生相对较少(0.26%～6.25%),以黄波罗和家榆更新占优势;依据群落更新幼树的组成结构与年龄结构,提出了6种城市人工林群落的近自然经营模式.
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| 关 键 词： | 城市人工林 天然更新 组成结构 年龄结构 近自然经营模式 |
Species composition and Age Structure for Natural Regeneration of Urban Plantations in Harbin |
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| Sun Jingbo,Tong Jingqiu,Mu Changcheng,Chang Fangyuan.Species composition and Age Structure for Natural Regeneration of Urban Plantations in Harbin[J].Journal of Northeast Forestry University,2009,37(2). |
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| Authors: | Sun Jingbo Tong Jingqiu Mu Changcheng Chang Fangyuan |
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| Institution: | Sun Jingbo,Tong Jingqiu,Mu Changcheng,Chang Fangyuan(School of Forestry,Northeast Forestry University,Harbin 150040,P.R.China) |
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| Abstract: | An experiment was conducted to study the species composition and age structure for natural regeneration of six urban plantation types,such as Dahurian larch,Asian white birch,Manchurian ash,Manchurian walnut,Amur corktree,Mongolian pine,by means of line transect method and annual ring method in Harbin,in order to assess the effects of natural regeneration of urban plantations and discuss its natural management modes.Results show that the quantities of natural regeneration of six urban forest species range f... |
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| Keywords: | Urban plantations Natural regeneration Species composition Age structure Near natural management modes |
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