不同空间结构参数尺度对马尾松胸径生长的影响分析  

Analysis of the Influence of Different Spatial Structure Parameters on the Breast Diameter Growth of Pinus massoniana

作　　者：陈松辉 CHEN Song-hui(Hua’an County Shajian Forestry Station,Hua’an,Fujian363803)

机构地区：[1]华安县沙建林业站,福建华安363803

出　　处：《园艺与种苗》2024年第12期52-54,共3页Horticulture & Seed

摘　　要：[目的]评估角尺度、混交度和胸径大小比数3个空间结构参数对马尾松胸径生长的影响。[方法]在福建省华安县沙建镇设置了5种不同林分类型的标准样地,在样地内进行马尾松胸径生长量调查及相关计算分析。[结果]马尾松胸径生长情况随空间结构参数的变化而存在显著差异。在角尺度方面,随机分布下马尾松胸径生长量最大;在混交度方面,混交度越高,胸径生长量越大;在胸径大小比数方面,马尾松在结构单元中处于绝对优势地位时胸径生长量最大。[结论]研究结果为优化马尾松林经营管理提供了理论依据。[Objective]To evaluate the effects of three spatial structural parameters,namely angular scale,mixing degree,and diameter at breast height ratio,on the growth of Pinus massoniana at breast height.[Method]Five different stand types of standard plots were set up in Shajian town,Hua’an county,Fujian province,and the investigation and related calculation analysis of diameter at breast height growth within the plots were conducted.[Result]There were significant differences in the growth of P.massoniana’s diameter at breast height with changes in spatial structural parameters.In terms of angular scale,P.massoniana had the highest growth rate at breast height under random distribution;In terms of mixing degree,generally the mixing degree was higher,the diameter growth at breast height was greater;In terms of the ratio of diameter to size at breast height,P.massoniana had the highest growth rate at breast height when it was in a dominant position in structural units.[Conclusion]The study results provide a theoretical basis for optimizing the management of P.massoniana forest.

关 键 词：空间结构参数 马尾松 胸径生长 林分类型 

分 类 号：S791.248[农业科学—林木遗传育种]