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机构地区:[1]东北林业大学,哈尔滨150040 [2]黑龙江省林业科学研究院
出 处:《东北林业大学学报》2008年第7期87-89,共3页Journal of Northeast Forestry University
基 金:国家“十一五”林业科技支撑计划课题(2006BAD03A08)
摘 要:以小兴安岭凉水自然保护区不同类型的红松(Pinus koraiensis sie.et Zucc)林作为研究对象,基于10块标准地的样地调查数据,对红松天然林、红松人工纯林、人工红松阔叶混交林和林隙透光抚育后的红松对照林进行对比,采用方差/均值比率法,并结合其它4种聚集度指标,分析和研究了它们的立木空间分布格局。结果表明,林隙透光抚育的红松对照林的空间分布格局为聚集分布,相同立地条件的红松天然林、红松人工纯林和人工红松阔叶混交林的空间分布格局均为随机分布。An experiment was conducted to study the difference in spatial distribution pattern of different types of Korean pine forests in Liangshui Nature Reserve, Lesser Xing'an Mountains in accordance with the investigation data of 10 sample plots in natural Korean pine forest, pure Korean pine plantation, broad-leaved Korean pine mixed plantation, and the contrasted Korean pine forest with light penetration in gaps. The spatial distribution patterns of trees in different types of Korean pine stands were analysed in terms of four indexes of aggregation degree by the method of variance-mean ratio. Result shows that the spatial distribution pattern of the contrasted Korean pine forest with light penetration in gaps is aggregated, while natural Korean pine forest, pure Korean pine plantation, and broad-leaved Korean pine mixed plantation all show random distribution oattems.
分 类 号:S757.2[农业科学—森林经理学]
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