生态学杂志2025，Vol.44Issue(1)：32-40,9.DOI:10.13292/j.1000-4890.202501.025
广东乳源大峡谷马尾松林主要木本植物种间关系、生态位及群落稳定性
Interspecific relationships,ecological niches of main woody species,and community stability in Pinus mas-soniana forest in Guangdong Ruyuan Grand Canyon
摘要
Abstract
Exploring the interspecific relationships,ecological niches of main plant species,and community stabili-ty in Pinus massoniana forest of canyon habitat is beneficial to creating a scientific foundation for forest resource management in the Guangdong Grand Canyon.The importance value(Ⅳ),niche breadths(BL and Bs),niche overlaps(Oik),OI and DI indices of dominant plant species were calculated based on survey data and the 2×2 contingency table of Pinus massoniana forest plot.The interspecific associations(AC)of dominant species were analyzed using the variance ratio(VR)method and the chi-square test.Community stability was evaluated using the Godron method.The results showed that:(1)As the constructive species,Pinus massoniana had the highest im-portance value(Ⅳ=40.11％)and ecological niche breadth(BL=12.53,Bs=2.64),followed by Cunninghamia lanceolata,Rhododendron kwangtungense,Schima superba,Platycarya longipes,Myrica rubra,and Elaeocarpus glabripetalus.Those seven species dominated resource competition in the community,with substantial niche overlap with other species.(2)Among the 78 species pairs of the dominant species,the species pairs with negative associ-ations(53.85％)outweighed that of positive associations(44.87％).The results of X2 test showed that the species pairs with significant associations accounted for 10.26％and those with non-significant associations accounted for 89.74％.The species pairs with OI and DI values less than 0.4 accounted for 69.23％and 73.08％of the total spe-cies pairs,respectively,indicating a high degree of negative inter-species association,strong relative independence and loose association of the species pairs.(3)Results of the Godron method demonstrated that the community was at an unstable state,with a negative interspecific association in the community(VR=0.62,W=18.44).We pro-posed that Rhododendron kwangtungense,Schima superba,Platycarya longipes,Myrica rubra,and Elaeocarpus glabripetalus should be selected as the constructive species to promote near-natural succession in the Pinus massoni-ana forest in Guangdong Grand Canyon.关键词
马尾松林/种间关系/生态位/群落稳定性Key words
Pinus massoniana/interspecific relationship/ecological niche/community stability引用本文复制引用
付志高,肖以华,许涵,邹建平,贲春丽,史欣,曹国松..广东乳源大峡谷马尾松林主要木本植物种间关系、生态位及群落稳定性[J].生态学杂志,2025,44(1):32-40,9.基金项目
广东省林木种质资源调查(SL00102)、国家重点研发计划项目(2022YFF1303003-06)和广东珠江三角洲森林生态系统国家定位观测研究站(0144135)项目资助. （SL00102）
