生物资源2025，Vol.47Issue(6)：600-608,9.DOI:10.14188/j.ajsh.20250922002
额敏县野苹果林群落优势种生态位及种间联结特征
Characteristics of niche and interspecific association of dominant species in Malus sieversii forest communities in Emin County
摘要
Abstract
Studying the niche characteristics of the main tree species in the Malus sieversii forest community and the relationship between the dominant species is expected to clarify the adaptive ability of the plants in the Malus sieversii forest to the environment,and provide a scientific basis for the protection,restoration and rational utilization of the Malus sieversii forest.This study took the Malus sieversii forests distributed in Emin mountainous area of Tacheng region as the research object,and adopted the typical sample plot survey method.Based on the results of the community survey,this study was conducted to investigate the adaptive ability of the major tree species in Malus sieversii forests by calculating the niche width and niche overlap value of major tree species in Malus sieversii forests in Emin mountainous area,as well as the overall connectivity index,the inter-species connectivity index and the inter-species relevance index of the main spe-cies within the forests,and to study the adaptive ability of major tree species to the environment.In this way,we investi-gated the adaptive ability of the major species in the Malus sieversii forest to the environment,quantified the interspecific relationships,and judged their structural stability.Among the seven major tree species in the Malus sieversii forest com-munity in Emin mountain area,the dominant species Xinjiang Malus sieversii ranked first with a horizontal niche width of 5.297 and a vertical niche width of 1.872.The horizontal and vertical niches of Malus sieversii and the other major tree species in the community were both 0<NO<0.25,which showed partial overlap.The overall correlation of the commu-nity was VR=1.88、W=24.53,χ2 0.95(16)<W<χ2 0.05(16),indicating an insignificantly positive association.Among all 105 pairs of species,the positively linked species pairs were 1.79 times more than the negatively linked species pairs,and the insignificant species pairs were 1.67 times more than the significant species pairs.The linkage between species pairs was weak,and the community structure of Malus sieversii forest was unstable.Both the Malus sieversii forest and Malus sieversii exhibt an unstable state at the community and population levels,and it is difficult to maintain the populations in the long term.In the future,it is necessary to strengthen the nurturing and management and artificial remediation of the seedlings and existing individuals of the dominant species of Malus sieversii,in order to promote the stable growth and re-source recovery of the Malus sieversii populations and forests in Xinjiang.关键词
新疆野苹果/群落结构/物种多样性/生态位/种间联结Key words
Malus sieversii/community structure/species diversity/niche/interspecific association分类
农业科技引用本文复制引用
曹羚,张丽娟,叶尔江·拜克吐尔汉,马春花,齐智颖..额敏县野苹果林群落优势种生态位及种间联结特征[J].生物资源,2025,47(6):600-608,9.基金项目
新疆维吾尔自治区林业改革发展资金项目(LYFZJJTB2021) （LYFZJJTB2021）
