浙江建德典型天然次生林群落主要乔木树种空间分布格局及种间关系  

Spatial distribution patterns and interspecific relationship of dominant tree species in the tree layer of typical natural secondary forest communities in Jiande,Zhejiang Province

作　　者：詹小豪 王旭航 叶诺楠 吴初平[3] 袁位高[3] 伊力塔[1] ZHAN Xiaohao;WANG Xuhang;YE Nuonan;WU Chuping;YUAN Weigao;YI Lita(College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,China;Zhejiang Academy of Forestry,Hangzhou 310023,Zhejiang,China)

机构地区：[1]浙江农林大学林业与生物技术学院,浙江杭州311300 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]浙江省林业科学研究院,浙江杭州310023

出　　处：《浙江农林大学学报》2021年第4期659-670,共12页Journal of Zhejiang A&F University

基　　金：浙江省省院合作林业科技项目(2019SY08)。

摘　　要：【目的】探究天然次生林群落主要乔木树种空间分布格局及种间关系,为区域次生林群落的恢复、改造及抚育经营提供科学依据。【方法】于浙江建德典型的天然常绿阔叶次生林、松阔混交次生林和松林次生林3类群落中分别设置面积为1 hm2(100 m×100 m)的样地,在每木调查基础上,运用Pianka生态位重叠指数、点格局分析方法、方差比率法(VR)、χ2检验和Spearman秩相关系数对各群落乔木层主要树种进行空间分布格局和种间关系的分析。【结果】(1)样地中各次生林群落主要树种在所有尺度上呈现聚集分布;(2)在0~25.0 m尺度内,各群落空间关联性以不显著相关关系为主,负相关种对数多于正相关种对数;(3)各群落主要树种种间总体关联性及χ2检验种间联结性均以不显著的正联结为主,Spearman秩相关分析显示种对间以不显著相关关系为主,与主要树种空间关联性分析结果及生态位重叠程度较吻合。【结论】样地中各群落乔木层主要树种在各自分布格局中独立性相对较强,物种间虽存在比较相似的环境资源需求,但种间联结关系比较松散,群落演替尚未进入成熟期。图7表4参37。[Objective]To investigate the spatial distribution pattern and interspecific relationship of dominant tree species in the tree layer of natural secondary forest communities,and to provide a scientific basis for the restoration,rehabilitation and reforestation management of the secondary forest community in the region.[Method]This paper set up 1 hm2(100 m×100 m)sample plot in each type of typical natural secondary forest communities(evergreen braod-leaved secondary forest,mason pine and broad-leaved mixed secondary forest and secondary forest of mason pine)in Jiande,Zhejiang Province.Based on the tally,the Pianka niche overlap index,point pattern analysis method,variance ratio method(VR),χ2-test and Spearman rank correlation coefficient were used to analyze the spatial distribution pattern and interspecific relationship of the dominant tree species in each community.[Result](1)The dominant tree species in each type of secondary forest community showed an aggregate distribution on all scales;(2)In the 0-25.0 m scale,the spatial correlation of each community is dominated by insignificant correlations,and the number of species pairs showing negative correlation is more than the number of species pairs showing positive correlation;(3)The overall correlations between the dominant tree species of each community and the interspecific associations obtained by theχ2-test were mainly non-significant positive associations.Spearman rank correlation analysis results showed that the non-significant correlations were mainly among the species pairs in each community.The results of spatial correlation analysis and niche overlap of the dominant tree species in each community are in good agreement.[Conclusion]The above results show that the dominant tree species of each community are relatively independent in their respective distribution patterns.Although there are similar environmental resource requirements between species,the inter-species linkages are basically loose,and the community succession has not yet entered the mature

关 键 词：天然次生林 生态位重叠 空间分布格局 种间关系 浙江建德 

分 类 号：S718.54[农业科学—林学]