摘要
种间联结反映了植物群落中的种间关系和群落稳定程度,对群落恢复和目标物种的保护具有重要意义。为了解金钱松群落的种间关系及群落稳定性,采用方差比率法(VR)、x^(2)检验、联结系数(AC)、共同出现百分率(PC)、Pearson相关系数、Spearman秩相关系数以及M.Godron稳定性测定等数量分析方法,对浙江长兴金钱松群落中的18个优势种群、153个种对的种间相关性及群落稳定性进行分析。结果表明:金钱松群落内的18个优势种群总体联结性呈不显著的正联结,植物种类累积倒数百分比与累积相对频度交点坐标为(40,60),远离稳定交点坐标(20,80),说明群落处于不稳定状态。卡方检验表明绝大多数种对之间的联结性均不显著,只有2个种对存在显著关联。联结系数和共同出现百分率也表明,群落各种对相关性较弱,各物种间呈独立分布格局。Pearson相关检验和Spearman秩相关检验发现,金钱松与水竹之间呈显著负相关。结论:金钱松群落种间关联性弱,群落处于不稳定阶段。为保护和促进金钱松种群的恢复,应进行适当的人为干扰和限制竹类植物在群落中的生长。
Interspecific correlations of plants reflect relationships among species in the community as well as community stability,and it has critical theoretical significance and application values for the restoration of vegetation and the conservation of aim species.In order to illustrate the interspecific correlations and the stability of communities for Pseudolarix amabilis,18 dominant species,153 species pair of Pseudolarix amabilis communities were studied by using quantitative analysis methods including the variance ratio(VR),Chi-square test,association coefficient(AC),percentage co-occurrence(PC),Pearson correlation coefficient,Spearman rank correlation coefficient,and M.Godron stability analysis in Changxing county,Zhejiang province.Results indicated that there were positive associations between dominant species totally without significant.The coordinate(40,60)between the inverse accumulative percentage of species and their accumulative relative frequency was far from the stability point(20,80),which showed that these communities were in an unstable state.The chi square test interpreted that the association most of the species pairs was not significant,and only a two species pairs of the community had a significant association.A vast majority of the species pairs were a weak association and performed an independent distribution pattern reflected by the results of AC and PC.Based on the result of Pearson correlation coefficient and Spearman rank correlation coefficient,there was significant negative associations between Pseudolarix amabilis and Phyllostachys heteroclada.Therefore,according to the analyses mentioned above,we came to conclusion that the correlation among the species pair for this community was relatively weak and the community was still in an unstable succession stage.To protect and improve the population restoration,not only the aim communities should be interfered by artificial measure,but also bamboos should be cleaned in the communities.
作者
谢春平
刘大伟
南程慧
李浩
黄晨杨
张健
XIE Chunping;LIU Dawei;NAN Chenghui;LI Hao;HUANG Chenyang;ZHANG Jian(College of Coastal Agricultural sciences,Guangdong Ocean University,Zhanjiang 524088,China;Key Laboratory of State Forest and Grassland Administration on Wildlife Evidence Technology,Nanjing 210023,China)
出处
《生态科学》
CSCD
2021年第1期62-70,共9页
Ecological Science
基金
国家林业和草原局珍稀濒危物种野外救护与人工繁育项目(2019)资助。
关键词
种间联结
相关系数
群落稳定性
金钱松
Interspecific correlations
correlation coefficient
community stability
Pseudolarix amabilis
作者简介
谢春平(1980-),男,海南儋州人,副教授,主要从事森林生态学研究。E-mail:xcp@gdou.edu.cn;通信作者:刘大伟(1983-),男,安徽阜阳人,讲师,主要从事野生动植物保护与利用研究。E-mail:272756332@qq.com。
