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  

Study on diameter class structure and spatial distribution pattern of Larix principis-rupprechtii plantations in mountain regions in northern Hebei

作　　者：李校[1] 李强[2] 许中旗[2] 陈永军[1] 杨浩[2] 尤立权 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068400 [2]河北农业大学林学院,河北保定071000

出　　处：《河北林果研究》2013年第1期1-5,共5页Hebei Journal of Forestry and Orchard Research

基　　金：河北省科技厅科技支撑项目(10236728)

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、Lo-gistic分布、对数正态分布以及正态分布模型进行模拟。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.

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 

分 类 号：S758.4[农业科学—森林经理学]