南京老山国家森林公园朴树群落优势种的种间关系
第39卷第4期2016年12月
南京师大学报（自然科学版）
JOURNAL OF NANJING NORMAL UNIVERSITY( Natural Science Edition)
Vol. 39 No. 4
Dec,2016
doi：10.3969/j.issn.l001-4616.2016.04.011
南京老山国家森林公园朴树群落优势种的种间关系
张雄邦\姚锐2，张光富2
(1.浙江煤炭地质局勘探一队，浙江湖州310017)
(2.南京师范大学生命科学学院,江苏省生物多样性与生物技术重点实验室，江苏南京210023)
[摘要]研究森林群落主要树种的种间关系，有助于揭示植物群落的结构和功能及物种共存的维持机制.在野 外调查基础上，采用2x2联列表，通过方差比率法（Ffl) 检验、3个关联指数（Jaccard指数、Ochla l指数、Dlce 指数）、联结系数U C)以及Pearson积距相关系数和Speanm n秩相关系数对南京老山国家森林公园的朴树群落 中16种主要乔木的种间关系进行分析.结果表明:群落内总体方差比率（F fl)为0.95,表现为负联结，反映了该 群落处于不稳定的进展演替阶段.16个优势乔木树种组成的120个种对中，仅有1对呈显著正联结，44对呈显 著或极显著负联结，而绝大多数种对联结关系未达到显著水平，这表明种对间的独立性较强.
[关键词]朴树群落，优势种，种间联结，南京
[中图分类号]S718.54 [文献标志码]A [文章编号]1001-4616(2016)04-0056-09
Interspecific Relationships of Dominant Species from Celtis sinensis Communities in Laoshan National Forest Park,Nanjing
Zhang Xiongbang1,Yao Rui2,Zhang Guangfu2
(l.T he First Exploration Team,Zhejiang Administration of Coal Geology,Huzhou 310017,China)
(2.School of Life Sciences,Nanjing Normal University,Jiangsu Key Laboratory of Biodiversity and Biotechnology,Nanjing 210023 ,China)
Abstract ： Interspecific relationships among dominant species in forests are conductive to understand plant community structure and function,and to discover the mechanisms of species coexistence. According to field survey,the interspecific relationship of 16 dominant species in tree layer of Celtis sinensis community in Laoshan National Forest Park,Nanjing was studied by using variance ratio( VR) ,-test,three association indices(including Jaccard, Ochiai, Dice) and associa-
tion coefficient( A C) in the 2x2 contingency table, together with Pearson's correlation coefficient,Spearman's rank corre-lation coefficient. The result indicated that overall associations between those dominant species in the community were not significantly negative, suggesting that this community was not mature and in the phase of progressive succession. T he/V2 test showed that among these 16 dominant species,only 1 species pairs exhibited significantly positive association and 44 species pairs showed that significant negative association.However, most of the total 120 species pairs did not show signif-icant or extremely significant interconnection, reflecting that the sampled dominant species tended to distribute relatively independently and were still in the unstable succession.
Key words ：Celtis sinensis communitiy,dominant species,interspecific association,Nanjing
种间联结(interspecific association)是指不同物种在空间分布上的相互关联性，通常是由于群落生境的 差异影响物种的分布而引起的[M].总体而言，森林群落中不同树种之间的关系可以分为3种情况:正联 结、负联结和无联结.种间联结是群落形成和演化的基础，是生态群落的重要特征之一.种间联结是种间 相互关系的表现形式，它可作为群落分类的依据.因此，对种间联结的研究有助于揭示森林群落的水平格 局形成、群落结构与功能以及群落演替动态[4].此外，种间联结研究对于维护森林群落的稳定性、解释群 落中的物种共存机制以及指导森林植被的生态恢复均具有重要作用[3’5].
朴树（Ceto s ire C T w is)为榆科（Ulmaceae)落叶乔木，多生于山坡、沟谷，主要分布在江苏、安徽、山东、河收稿日期:2016-06-14.
基金项目：江苏省第二次全国重点保护野生植物资源调查项目.
通讯联系人:张光富，副教授，研究方向:植物生态学.E-mail: zhangguangfu@ https://www.wendangku.net/doc/5713754136.html,
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