西北林学院学报2024，Vol.39Issue(1)：132-139,176,9.DOI:10.3969/j.issn.1001-7461.2024.01.18
黔中地区马尾松-甜槠针阔混交林群落结构特征与林木空间分布格局及其关联性
Community Structure Characteristics and Forest Spatial Distribution Pattern and Their Correlation of Pinus massoniana-Castanopsis eyrei Mixed Forest in Central Guizhou
摘要
Abstract
In order to explore the community structure and spatial distribution pattern characteristics of nat-ural secondary conifer-broadleaved mixed forest of Pinus massoniana in central Guizhou,typical mixed P.massoniana-Castanopsis eyre forest and pure P.massoniana forest were selected as the survey objects.Paired correlation function was adopted to analyze the influence of environmental heterogeneity on the spa-tial distribution of main tree species,the spatial pattern and spatial correlation of main tree species and di-ameter class.A total of 91 species of plants were recorded,including 42 and 68 species in the mixed forest and pure forest,respectively.The total diameter class of the trees in the two forest communities showed an inverted'J-shape'with stable structure and good natural regeneration.Habitat heterogeneity had a signifi-cant influence on the spatial distribution pattern of the two community types at small distances.The distri-bution pattern of saplings,middle trees and the overall distribution pattern were similar in the two sam-pling plots:in the range of 0-10 m,the point distance was in aggregated distribution,random distribution in the range of 10-25 m,and for the big trees,it was in random distribution in whole observation scale.In pure P.massoniana forest,P.massoniana &C.eyrei and C.eyrei &Quercus aliena were mostly uncorre-lated in special correlationship and P.massoniana&Q.aliena was mainly negatively correlated.In the mixed forest of P.massoniana &C.eyrei,the two species were mainly negatively correlated in the range of 10-20 m.The spatial correlation of different diameter classes of the two community types was generally uncorrelated.It is concluded that the community structure and spatial distribution pattern of natural sec-ondary broad-leaved mixed forest P.massoniana-C.eyrei coniferous and in central Guizhou mountainous area are significantly different from those of pure P.massoniana forest.The two forests studied are differ-ent in community structure.Environmental heterogeneity,diameter structure and spatial scale have obvious effects on the spatial distribution pattern and correlation of the two.关键词
马尾松/针阔混交林/群落结构/林木空间分布Key words
Pinus massoniana/coniferous and broad-leaved mixed forest/community structure/forest tree spatial distribution分类
农业科技引用本文复制引用
金鹏,徐明,文春玉,聂坤,杨雪,唐雪娅,魏珊,张健..黔中地区马尾松-甜槠针阔混交林群落结构特征与林木空间分布格局及其关联性[J].西北林学院学报,2024,39(1):132-139,176,9.基金项目
国家自然科学基金(31960234,31660150) （31960234,31660150）
贵州大学"SRT计划"项目(2021SRT-273). （2021SRT-273）
