广西植物2025，Vol.45Issue(3)：567-584,18.DOI:10.11931/guihaia.gxzw202408038
亚热带人工混交林演替早期群落结构及其恢复特征
Community structure and recovery characteristics of subtropical mixed plantations in early succession
摘要
Abstract
The resilience of community structure is important to the success of mixed plantation construction.This study was conducted in the subtropical mixed plantations formed after the renovation of pure forest of Cunninghamia lanceolata and planting broad-leaved native tree species in 2010 in Yunyong Forest Farm,Foshan City,Guangdong Province.To understand community structure and recovery characteristics of subtropical mixed plantations,species diversity,importance value,diameter class structure and basal area at the breast height were calculated based on the 7.92 hm2 plot established in typical regions in 2020.The results were as follows:(1)A total of 136 woody plants and lianas belonging to 101 genera and 47 families colonized in the community after 10 years of natural restoration,including 78 rare species,indicating the subtropical mixed plantations had a strong resilience of species diversity.(2)The average diameter at breast height(DBH)of all individuals was 8.47 cm,and the DBH distribution showed an inverse-J shape,indicating the community regeneration was good and in a relatively stable state.In addition,early artificially introduced species could achieve natural regeneration,although their DBH shapes showed bell curves due to the short recovery time.(3)There was a significant positive correlation between species abundance and basal area at the breast height,while other species diversity indices showed significant negative correlations with basal area at the breast height,indicating the basal area at the breast height was still determined by the artificially introduced species in the early succession of mixed plantations.With the increasing of niche complementarity among coexisting species,it is expected to promote the simultaneous improvement of species diversity and community productivity in the succession of mixed plantations.The results reveal the subtropical mixed plantations have strong resilience of community structure.These findings provide a theoretical basis for the management of subtropical mixed plantations.关键词
人工混交林/物种多样性/群落结构/胸高断面积/恢复特征Key words
mixed plantation/species diversity/community structure/basal area at the breast height/recovery characteristics分类
农业科技引用本文复制引用
李艳朋,杜健,盘李军,陈洁,许涵..亚热带人工混交林演替早期群落结构及其恢复特征[J].广西植物,2025,45(3):567-584,18.基金项目
中国林业科学研究院基本科研业务费专项(CAFYBB2021SY002,CAFYBB2022SY014,CAFYBB2021ZH002) （CAFYBB2021SY002,CAFYBB2022SY014,CAFYBB2021ZH002）
广东省基础与应用基础研究基金(2024A1515011100) （2024A1515011100）
广东珠江三角洲森林生态系统国家定位观测研究站项目(0144135). （0144135）
