生态学杂志2025，Vol.44Issue(4)：1076-1084,9.DOI:10.13292/j.1000-4890.202504.024
云南香格里拉亚高山寒温性针叶林20hm2动态监测样地物种组成与生境关联
Woody species composition and habitat association of the 20 hm2 plot of subalpine cold-temperate conifer-ous forest in Shangri-La,Yunnan
摘要
Abstract
Abies georgei forests represent one of the major community types of subalpine cold-temperate coniferous forests in the Hengduan Mountains,which forms alpine treeline in southwest China.This study is based on survey data from the a 20 hm2 plot in subalpine cold-temperate coniferousforest of the Shangri-La National Park in Yunnan Province.We investigated species composition,diameter class structure,and habitat preference of woody species with diameter at breast height(DBH)≥1 cm.The results showed that:(1)A total of 39106 independent indivi-duals and 9888 branches belonging to 10 families,15 genera and 28 species were tagged.Among them,there were 27463 individuals of A.georgei,accounting for 70％of total individuals.(2)The areal type of the family and gene-ra predominantly represented the north temperate and its two varieties,accounting for 50％and 87％,respectively.(3)The diameter class distribution of dominant species A.georgei,Rosa omeiensis and Sorbus rehderiana exhibited an inverse J-shaped pattern,indicating a good natural regeneration.Lonicera tangutica,Dipelta yunnanensis,and Rhododendronrubiginosum exhibited a skew-normal distribution,indicating stable population structure.(4)Among the 22 targeted species with individuals ≥20,10 species were significantly positively or negatively associated with at least one specific habitat(i.e.,gully,low slope,high slope,and high valley).Among them,four species,in-cluding R.rubiginosum and D.yunnanensis,showed a positive association with high-slope habitat.Two species,Pi-cea likiangensis and Cotoneaster acutifolius,showed a positive association with low-slope habitat.A.georgei was pos-itively associated with high-valley habitat,while three species,including R.rubiginosum,S.rehderiana,and D.yunnanensis,exhibited a negative association with high-valley habitat.These findings suggest that the niche differ-entiation of habitats plays an important role in maintaining species diversity in the A.georgei forest at local scale.Our results provide a basis for future research on the mechanisms of community assembly and species coexistence in subalpine cold-temperate coniferous forests.关键词
长苞冷杉/群落组成/径级结构/区系特征/生境关联Key words
Abies georgei/community composition/diameter class structure/floristic composition/habitat associa-tion引用本文复制引用
顾荣,万嘉敏,陈明苗,张彩彩,林露湘..云南香格里拉亚高山寒温性针叶林20hm2动态监测样地物种组成与生境关联[J].生态学杂志,2025,44(4):1076-1084,9.基金项目
2021年中央财政林草生态保护恢复资金资助(WNLY-2022-06-018)、NSFC-云南联合基金(U1902203)、国家自然科学基金(32160268)、云南省基础研究专项重大项目(202101BC070002)、云南省重点研发计划(202303AC100009)和香格里拉普达措国家公园2021年林业草原生态保护恢复项目科研(WNLY-2022-06-018)资助. （WNLY-2022-06-018）
