首页关于本刊影响因子及获奖投稿须知订阅及广告专辑与专题学术会议绿色发表通道优秀论文 
叶权平,张文辉,于世川,薛文艳.桥山林区麻栎群落主要乔木种群的种间联结性.生态学报,2018,38(9):3165~3174 本文二维码信息
二维码(扫一下试试看!)
桥山林区麻栎群落主要乔木种群的种间联结性
Interspecific association of the main tree populations of the Quercus acutissima community in the Qiaoshan forest area
投稿时间:2017-06-13  修订日期:2017-12-14
DOI: 10.5846/stxb201706131071
关键词桥山林区  麻栎群落  种间联结  生态种组
Key WordsQiaoshan forest area  Quercus acutissima community  interspecific association  ecological species groups
基金项目国家林业局全国森林经营基础研究项目(1692016-03);黄土高原松栎林多功能近自然经营作业法及其效益监测研究
作者单位E-mail
叶权平 西北农林科技大学陕西省林业综合重点实验室, 杨凌 712100  
张文辉 西北农林科技大学陕西省林业综合重点实验室, 杨凌 712100 839951676@qq.com 
于世川 西北农林科技大学陕西省林业综合重点实验室, 杨凌 712100  
薛文艳 西北农林科技大学陕西省林业综合重点实验室, 杨凌 712100  
摘要点击次数 61
全文下载次数 23
摘要:
采用方差比率法(VR),基于2×2联列表的χ2检验、联结系数(AC)、共同出现百分率(PC)和点相关系数Ф,对桥山林区麻栎(Quercus acutissima)群落中重要值前17位的乔木种群进行种间联结测定与分析。结果表明:桥山林区麻栎群落17个主要乔木种群总体表现为不显著负关联,各物种趋于独立,群落整体不稳定;χ2检验结果显示17个主要种136个种对中,正联结占44.85%,负联结占55.15%,绝大多数呈不显著关联,说明群落种间关联较弱,群落处于不稳定演替阶段;联结系数AC与共同出现百分率PC分析结果都表明17个主要种总体上对生境的需求不同,各种对同时出现几率小;点相关系数Ф测定结果显示正联结种对62个,占总对数45.59%,负联结种对74个,占总对数54.41%;根据种群的聚类分析和种间联结测定结果及生态习性,把17个主要种群划分为3个生态种组。
Abstract:
Through adaptation of the variance ratio (VR) method and the χ2 test, the association coefficient (AC), percentage co-occurrence coefficient (PC) and point correlation coefficients (Ф), which are all based on 2×2 contingency tables, were analyzed for the 17 most important tree populations of the Quercus acutissima community in the Qiaoshan forest area. The results showed no significant negative correlations among these 17 tree populations, as the species tended to be distributed independently and the community was unstable. The χ2 test results showed that among the 136 species pairs of the 17 dominant populations, 44.85% had a positive association and 55.15% had a negative one, and the vast majority of these associations was not significant. This indicated that the association among the tree populations was weak, and the community was in an unstable succession stage. Analysis of the AC and PC results revealed that the 17 main populations had different habitat demands, and the probability of simultaneous emergence of each species pair was small. The Ф measurement results showed that 62 (45.59%) species pairs had a positive association and 74 (54.41%) species pairs had a negative association. Based on the cluster analysis and interspecific association results, the habitats of the 17 main populations were divided into three ecological groups.
HTML 查看全文   查看/发表评论  下载PDF阅读器

您是本站第 70850012 位访问者

Copyright © 2005-2019   京ICP备06018880号
地址:北京海淀区双清路18号
  邮编:100085    电话:010-62941099
  E-mail : shengtaixuebao@rcees.ac.cn
本系统由北京勤云科技发展有限公司提供技术支持