| 冀北山地杨桦次生林群落乔木层种群生态位研究 |
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| 引用本文： | 金辉,卢银平,于泊. 冀北山地杨桦次生林群落乔木层种群生态位研究[J]. 河北林果研究, 2011, 26(3): 231-234 |
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| 作者姓名： | 金辉 卢银平 于泊 |
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| 作者单位： | 1. 河北农业大学林学院,河北 保定,071000
2. 河北省木兰围场国有林场管理局,河北 围场,068450 |
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| 基金项目： | 科技部公益专项《三北地区生态林可持续经营关键技术研究与示范研究》(200804027) |
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| 摘 要： | 采用Levins和Pianka公式计测了冀北山地杨桦次生林群落乔木层8个种群的生态位宽度和生态位重叠，并对种群的生态位和环境适应性进行了探讨。结果表明：白桦、山杨和棘皮桦为主要树种，其他树种均为伴生树种。白桦、色木槭、稠李、山杨等具有较大的生态位宽度，分别为0．8668．0．8541、0．7219和0．6829，而蒙古栎和山荆子等生态位宽度较小。生态位重叠值小于0．5的种对有14对，占总数的50％。生态位重叠值大于0．5的种对有13对，占总数的46．43％。不发生重叠的种对有1对，占总数的3．57％。具有较大生态位宽度的树种是主要优势种，具有广泛的适应性。生态位宽度较大的物种与其他种类间的生态位重叠也较大。
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| 关 键 词： | 冀北山地 杨桦次生林 生态位 |
Niche characteristics of tree layer dominant populations in secondary Poplar-birch forest community in north mountain of Hebei |
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| JIN Hui,LU Yin-ping,Yu Bo. Niche characteristics of tree layer dominant populations in secondary Poplar-birch forest community in north mountain of Hebei[J]. Hebei Journal of Forestry and Orchard Research, 2011, 26(3): 231-234 |
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| Authors: | JIN Hui LU Yin-ping Yu Bo |
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| Affiliation: | JIN Hui1,LU Yin-ping2,YU Bo2(1 College of Forestry,Agricultural University of Hebei,Baoding 071000,China,2 Mulan-weichang Foresty Administration of Hebei Province,Weichang 068450,China) |
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| Abstract: | The eight populations of tree layer in secondary forest of secondary poplar-birch forest which located in the mountainous region of northern Hebei Province were mensurated using the formula described of Levins and Pianka.Meanwhile,the niche of population and environmental adaptability was probed.The results showed:Betula platyphylla,Populus davidiana,Betula dahurica were main species,other species were associated.Betula platyphylla,Acer mono,Padus racemosa,Populus davidiana had greater niche breadth,with 0.... |
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| Keywords: | north mountain of Hebei secondary poplar-birch forest niche |
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