森林与环境学报2024，Vol.44Issue(5)：501-510,10.DOI:10.13324/j.cnki.jfcf.2024.05.007
木林子矮曲林优势种生态位与种间联结性
Niches and interspecific associations of dominant species in elfin forest of Mulinzi
摘要
Abstract
Taking the elfin forest community on the top of the mountain in the Mulinzi National Nature Reserve in Hubei as the research object,the ecological niche,interspecific connection characteristics,and community stability of the dominant species in the elfin forest community on the top of the mountain were analyzed,and the resource utilization strategy and survival mechanism of plants in unique habitats were explored.Based on a field survey,the niche width,niche overlap index,variance ratio method,chi-squared test,Spearman's rank correlation test,Pearson's correlation test,and M.Godron stability assay were used to analyze the niche,interspecific connection characteristics,and stable communities of the dominant species in the elfin forest community at the top of Mulinzi Mountain.Quercus glauca had the highest significant value and niche width and was found to be the dominant species in the community.Enkianthus serrulatus,followed by Sorbus caloneura,were the main species in the community,but the order of importance and niche width were significantly different.Among the 190 species pairs comprising 20 dominant species,21.05%of the species pair niche overlap index values were more significant than 0.5,and 50.00%were between 0.2 and 0.5.There is a common phenomenon of niche overlap among populations,and dominant species have a high degree of niche overlap with other populations.The overall association with the community showed an insignificant positive association.The chi-squared test showed that 98.95%of the species pairs showed an insignificant or no association.Pearson's and Spearman's rank correlation tests also showed no significant association between most species,and the association between various groups was weak.Most species in the elfin forest community at the top of Mulinzi Mountain were loosely connected,and competition with the dominant species for environmental resources was weak.Harsh environmental conditions altered the survival and resource utilization strategies of various species in the community.Community structures have adapted to such habitats,and environmental resources have been utilized more fully.The community is relatively stable.关键词
矮曲林/优势种/生态位/种间联结/群落稳定性Key words
elfin forest/dominant species/niche/interspecific associations/community stability分类
农业科技引用本文复制引用
艾鑫,薛卫星,艾训儒,姚兰,朱江,郭秋菊..木林子矮曲林优势种生态位与种间联结性[J].森林与环境学报,2024,44(5):501-510,10.基金项目
国家重点研发计划政府间国际科技创新合作项目"多种生态系统服务与生物多样性协同提升的综合森林管理研究"(2023YFE0112800) （2023YFE0112800）
湖北省教育厅科学研究计划资助项目"鄂西南高山矮曲林凋落物分解障碍机制"(Q20221903). （Q20221903）
