黔北丹霞地貌桫椤群落优势木本植物的种间联结性  

The Interspecific Association of the Dominant Xylophyta of Alsophila spinulosa Community of Danxia Landform in North Guizhou,China

作　　者：蒋长洪[1,2] 陈茗杨 漆基海 徐德静 吴邦利[1] 郭云 何跃军 JIANG Changhong;CHEN Mingyang;QI Jihai;XU Dejing;WU Bangli;GUO Yun;HE Yuejun(Forestry Ecology Research Center,Forestry College,Guizhou University,Guiyang 550025;Guiyang Urban Greening Management Office,Guiyang 550003;Guizhou Green Ecological Garden Company,Guiyang 550003,China)

机构地区：[1]贵州大学林学院贵州大学森林生态研究中心,贵阳550025 [2]贵阳市城市绿化管理处,贵阳550003 [3]贵州绿之梦生态园林工程有限公司,贵阳550003

出　　处：《重庆师范大学学报（自然科学版）》2021年第3期114-120,共7页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金(No.31000204,No.31360106);贵州省计划项目(黔科合支撑[2021]一般455);贵州省高层次创新型人才平台项目(No.[2020]6004,No.[2018]5781,No.[2017]5788);贵州省生态学重点学科建设项目(黔学位合字ZDXK[2016]7号)。

摘　　要：【目的】探索黔北丹霞地貌桫椤(Alsophila spinulosa)群落优势木本植物的种间联结性。【方法】采用方差比率(VR)、χ^(2)检验、联结系数(AC)、共同出现百分率(PC)、Pearson相关性分析和Spearman秩相关性分析方法,对黔北丹霞地貌桫椤群落内15个优势木本植物构成的105个种对进行种间联结性定量分析。【结果】VR分析发现15个优势木本植物的种间关系总体上表现为不具有统计学意义的负关联关系,且负关联种对数多于正关联种对数。χ^(2)检验、AC分析、Pearson相关性分析和Spearman秩相关性分析发现负关联种对分别占全部种对数的52.38%,52.38%,62.86%和55.24%;正关联种对较少分别占全部种对数的45.71%,45.71%,36.19%和42.86%;而PC分析则显示正关联种对数多于负关联种对数。105个种对总体上表现为负关联种对数占优势,正关联种对数次之。【结论】黔北丹霞地貌桫椤群落优势木本植物的种间联结性较为松散,种间关系趋于独立。[Purposes]To explore the interspecific association of dominant xylophyta of Alsophila spinulosa communityin Danxia landform of Northern Guizhou.[Methods]105 species pairs of 15 dominant xylophyta fromA.pinulosacommunity were analyzed by the variance ratio test(VR),χ^(2) test,association coefficient(AC),co-occurrence percentage(PC),Pearson correlation coefficient and Spearman rank correlation coefficient to quantify interspecific association.[Findings]The association was non-significant negative correlation of the whole community,and the negative association species pairs were more than that of positive association species pairs.Among the 105 pairs of dominant populations,χ^(2) test,AC,Pearson correlation test and Spearman rank correlation test showed that there were more negative association species pairs,which accounted for 52.38%,52.38%,62.86%,and 55.24%of the total species pairs,respectively.There were less positive association pairs,accounting for 45.71%,45.71%,36.19%,and42.86%,respectively,while the PC was 47.61%more than that of negative association species pairs(18.1%).In general,105 pairs were dominated by negative association pairs,followed by positive association pairs.[Conclusions]The interspecific association of dominant xylophyta in A.spinulosa community in Danxia landform of Northern Guizhou present loose status,and the interspecific relationship tends to be independent.

关 键 词：桫椤 种间联结性 种间关系 种对 

分 类 号：Q948[生物学—植物学]