文献类型：期刊文献

中文题名：季风常绿阔叶林不同恢复阶段乔木优势种群生态位和种间联结

英文题名：Niches and interspecific associations of dominant tree populations at different restoration stages of monsoonal broad-leaved evergreen forest

作者：李帅锋[1] 刘万德[1] 苏建荣[1] 张志钧[1]

第一作者：李帅锋

机构：[1]中国林业科学研究院资源昆虫研究所

年份：2011

卷号：30

期号：3

起止页码：508-515

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中国林科院中央级公益性科研院所基本科研业务费专项项目(riricaf201002M;CAFYBB2008001)资助

语种：中文

中文关键词：群落恢复;生态位;种间联结;回归分析;季风常绿阔叶林

外文关键词：community restoration; niche; interspecific association; regression analysis; monsoonal broad-leaved evergreen forest

分类号：Q948

摘要：生态位和种间联结是群落动态研究的重要内容之一,物种间相互作用影响着群落的恢复和演替。本文在对云南普洱地区不同恢复阶段(恢复15年、恢复30年和原始林群落)季风常绿阔叶林群落的野外调查基础上,采用生态位宽度、生态位重叠、方差比率(VR)和基于2×2联列表的χ2检验、联结系数(AC)等方法,分析了不同恢复阶段各种群的变化趋势。结果表明:3种群落类型中物种的重要值与相对应的生态位宽度之间存在着显著的正相关,恢复15年群落有78.22%的种对之间的生态位重叠值在0.4～0.8,说明其群落优势物种存在较强的资源利用性竞争,而恢复30年和原始林群落结构则具有一定的稳定性,多数生态位宽度较大的物种之间的生态位重叠要大于生态位较小的物种,反映出优势物种具有较强的竞争能力;恢复15年和恢复30年群落物种间总体呈不显著正联结,原始林群落则呈不显著负联结;3种群落231种对中,绝大多数种对联结系数未达显著水平,种对间的独立性相对较强,群落中物种间正负联结对数占总种的比例随恢复进程而出现下降趋势。不同恢复阶段群落中联结系数与生态位重叠值之间存在显著正相关,生态位重叠值越大,其联结系数也越大。
Niche and interspecific association are one of the important contents in community dynamics research.Interspecific interaction affects the restoration and succession of community.In this paper,field investigation was made on the community structure of monsoonal broad-leaved evergreen forest at its different restoration stages（primary forest,PF;15 years restoration,15R;and 30 years restoration,30R）in Pu＇er City of Yunnan Province,and the niche breadth,niche overlap,and variance ratio（VR）as well as the chi-square test and association coefficient（AC）based on 2×2 contingency table were used to analyze the change trend of the dominant tree populations at different restoration stages.In the three communities at different restoration stages,there was a significant positive correlation（P0.001）between the importance value and corresponding niche breadth.78.22% of species pairs at 15R had a niche overlap 0.4-0.8,suggesting a strong resource utilization competition in dominant species;while the community structure at PF and 30R was rather stable,and the species with higher niche breadth had a higher niche overlap than those with lower niche breadth,reflecting that the dominant species had stronger competitiveness.At 15R and 30R,there was a positive interspecific association;while at PF,there was a negative association.In the three communities,most species pairs had no significant association,showed stronger independency,and the proportions of positive and negative associations decreased with the process of restoration.There was a significant positive correlation between the association coefficient and niches overlap at different restoration stages,i.e.,the high the niche overlap,the greater the association coefficient.