大兴安岭次生林区优势种群落叶松种内联结和关联性分析  

Intraspecific association and correlation analysis of Larix gmelinii in the secondary forests of the Daxin’an Mountains

作　　者：白小军[1,2] 谷会岩 BAI Xiaojun;GU Huiyan(College of Forestry,Northeast Forestry University,Harbin 150040,Heilongjiang,China;Shenmu Senior High School of Shaanxi Province,Yulin 719300,Shaanxi,China)

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040 [2]陕西省神木中学,陕西神木719300

出　　处：《中南林业科技大学学报》2023年第5期108-119,共12页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目(31370610);中央高校基本科研业务费专项资金项目(2572017PZ05)。

摘　　要：【目的】探究东北大兴安岭典型次生林内优势种群落叶松Larix gmelinii种内关系以及种内关系所存在的规律,揭示种群发展程度、发展现状、发展动态和发展规律,以期为今后在植被修复、恢复和物种多样性的保护方面提供理论依据。【方法】采用方差比率方法(RV)和基于2×2联列表关联性分析方法,通过χ2显著性检验并结合AC联结系数、OI指数、Jaccard指数以及Pearson相关和Spearman相关检验等多种方法综合研究分析优势种群落叶松种内关联性质和关联程度。【结果】1)落叶松种群内存在显著的正联结作用,不同龄级的落叶松个体间关联性随龄级的不同而发生变化,具体表现为成龄个体间基本上表现为无关联,幼龄个体间整体上呈显著的正联结。2)不同龄级个体间(第1、2龄级除外)龄级间差距越大,相关两龄级的个体间负关联作用越强。3)相邻两龄级个体间的关联性随着个体的发育而发生着动态变化,具体为发育早期表现出正关联,随着个体的发育正关联作用减弱,而后表现出负关联,发育到老龄阶段,相邻的个体间又表现出一定的正关联作用。4)在进行种内关联性分析时Spearman相关分析较其他分析灵敏更高,种内联结性与关联性分析时结合使用多种方法可使分析结果更加可靠。【结论】研究区域内的优势落叶松种群内整体上存在显著正联结作用,这种正联结作用主要存在于幼龄个体之间和老龄个体间;种群内部这种显著正联结作用说明了落叶松种群已发展到了相对稳定的高级阶段。【Objective】The purpose of this article was to explore the intraspecific relationships and the existing rules of Larix gmelinii,the dominant species in the typical secondary forests of the Daxing’an Mountains in Northeast China,so as to reveal its population development level,development status,development dynamics and development laws,to provide a theoretical basis for vegetation restoration,rehabilitation and conservation of species diversity in the future.【Method】To comprehensively study and analyze the nature and degree of intraspecific association of Larix gmelinii,the ratio of variance method(VR),the 2×2 contingency table correlation analysis method,theχ2 significance test combined with the correlation coefficient(AC),Ochiai(OI)correlation index and Jaccard(JI)index,Pearson correlation and Spearman Correlation test as well as other methods were applied.【Result】(1)There was a significant positive association with the Larix gmelinii population,and the association between the individuals differed within different age classes,which showed that there was no association between adult individuals and a significant positive association between young individuals on the whole.(2)Among individuals of different age classes(except the first and second age classes),the greater the age gap between individuals of different age classes,the stronger the negative correlation between the individuals.(3)The correlation between the individuals of two adjacent age classes changed dynamically with the development of the individuals.Specifically,it showed a positive correlation in the early stage of development,and the positive correlation weakened with the development of the individual,which then showed a negative correlation.When developing to old age,the adjacent individuals showed a certain positive correlation.(4)Spearman correlation analysis was more sensitive than other analyses in the analysis of intraspecific association,and the combination of multiple methods in the analysis can make the results more reliab

关 键 词：种内联结 关联性分析 卡方检验 优势种群 大兴安岭 

分 类 号：S718.54[农业科学—林学]