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冀北山地华北落叶松人工林径级结构及空间分布格局研究

标题: 冀北山地华北落叶松人工林径级结构及空间分布格局研究
英文标题: Study on diameter class structure and spatial distribution pattern of Larix principis-rupprechtii plantations in mountain regions in northern Hebei
作者: 李校,李强,许中旗,陈永军,杨浩,尤立权
出版时间: 2013-01-01
机构: 河北农业大学
关键词: 冀北山地,华北落叶松人工林,径级结构,空间分布格局
英文关键词: mountainous areas in northern Hebei structure,spatial distribution pattern province,larch plantation,diameter class
刊名: 河北林果研究
英文刊名: Hebei Journal of Forestry and Orchard Research
ISSN: 1007-4961
卷号: 001
基金: ^A河北省科技计划项目^B10236728^D1
页码: 1-5
分类号: S758.4
摘要: 以华北落叶松人工林为研究对象,采用点格局分析法,对冀北山地华北落叶松人工林的径级结构和空间结构进行了探究.结果表明:冀北山地白桦、华北落叶松以及蒙古栎3种林木的分布与尺度(t)有关.当t〈14m或t〉22m时,白桦属于集群分布;当14m〈t〈22m时,白桦属于随机分布.当t〈14m时,华北落叶松属于集群分布;当t〉14m时,华北落叶松属于随机分布.当t〈19m时,蒙古栎属于集群分布;当t〉19m时,蒙古栎属于随机分布.白桦、华北落叶松和蒙古栎的径阶的分布都接近于正态分布,可用韦布尔分布、Logistic分布、对数正态分布以及正态分布模型进行模拟.
英文摘要: In this paper, larch forests were taken as the research materials to study the diam- eter class structure and spatial structure using the method of point pattern analysis, in the northern mountainous areas in Hebei province. The results showed that the tree distribution of larch, birch and oak in the region was related to scale(t). When t〈14 m or t〈22 m, birch trees were cluster distributed; when 14 m〈t〈22 m, birch trees were randomly dis- tributed. When t〈14 m, larch trees were cluster distributed; when t〉14 m, larch trees were randomly distributed. When t〈19 m, oak trees were cluster distributed; when t〉19 m, oak trees were randomly distributed. Birch, larch and oak tree diameter distributions were found close to normal distribution pattern, Wepur distribution, available Logistic distribution, logarithmic nor- mal distribution and normal distribution models can be used for simulation.