森林与环境学报2024，Vol.44Issue(4)：414-422,9.DOI:10.13324/j.cnki.jfcf.2024.04.009
基于树种谱系的林木种间竞争分析
Analysis of interspecific competition among forest trees based on species genealogy
摘要
Abstract
This study aims to investigate the influence of kinship between competing and target trees on interspecific competition in coniferous-broadleaved mixed forests to provide theoretical support for the scientific management of these forests. We focused on the coniferous-broadleaved mixed forest situated in Tianmu Mountain National Nature Reserve,Zhejiang Province,China,and introduced tree species genealogy into the Hegyi competition index to construct a new index termed the tree species genealogy competition index (G_Hegyi) . We conducted comparative analyses of the correlation between the Hegyi interspecific competition index,the G_Hegyi interspecific competition index and diameter at breast height(DBH),and the correlation between basal area increment and basal area increment rate with the Hegyi interspecific competition index and the G_Hegyi interspecific competition index. We conducted a comparative study to analyze the relationship of the ratio of the Hegyi interspecific competition index ratio to the G_Hegyi interspecific competition index ratio with tree growth. The results demonstrated that both interspecific competition indices and DBH showed highly significant negative correlations,and both exhibiting power function relationships;basal area increment and both interspecific competition indices showed highly significant negative correlations,and both conformed to logarithmic function relationships. The basal area increment rate had significantly positive correlation with both interspecific competition indices and followed power function distributions. The determination coefficients (R2) and the absolute values of correlation coefficients of G_Hegyi interspecific competition index with DBH,R2 and the absolute values of correlation coefficients of basal area increment,and basal area increment rate with G_Hegyi interspecific competition index were higher than those of the Hegyi interspecific competition index. The G_Hegyi interspecific competition index ratio more accurately reflects the relationship between forest growth and interspecific competition than the Hegyi interspecific competition index ratio. The G_Hegyi interspecific competition index demonstrated superiority in analyzing forest interspecific competition and is thus more suitable for application in related studies of tree growth.关键词
树种谱系/Hegyi竞争指数/G_Hegyi竞争指数/种间竞争/针阔混交林Key words
tree species genealogy/Hegyi competition index/G_Hegyi competition index/interspecific competition/coniferousbroadleaved mixed forests分类
农业科技引用本文复制引用
姜鹏博,窦啸文,韦新良,罗海豪,汤孟平..基于树种谱系的林木种间竞争分析[J].森林与环境学报,2024,44(4):414-422,9.基金项目
国家自然科学基金面上项目"基于拓扑关系的混交林空间结构稳定性及其对树木生长的影响研究"(31870617). （31870617）
