城市闲置地自生植物种间联结及土壤因子分析——以郑州北龙湖公园为例  

Interspecific Associations and Soil Factors of Volunteer Plants in Urban Vacant Land——A Case Study of Zhengzhou Beilonghu Park

作　　者：尤其 商妞 代挽玉 姜文倩 刘洋[1] 孙超[1] 栗燕[1] YOU Qi;SHANG Niu;DAI Wan-yu;JIANG Wen-qian;LIU Yang;SUN Chao;LI Yan(School of Landscape Architecture and Art,Henan Agricultural University,Zhengzhou 450002,Henan,China)

机构地区：[1]河南农业大学风景园林与艺术学院,河南郑州450002

出　　处：《西北林学院学报》2023年第5期270-278,共9页Journal of Northwest Forestry University

基　　金：河南省科技攻关项目(212102310581);河南省高等学校重点科研项目(21A220002)。

摘　　要：基于生态位理论、种间联结、典范对应分析(CCA)排序方法对郑州北龙湖公园闲置地内自生植物群落优势种的种间联结性及其与土壤因子的关系进行分析,以此来揭示自生植物群落的结构和分布特征。结果表明,1)自生植物群落优势种的生态位重叠程度总体偏低,种间竞争不激烈;重要值和生态位宽度较大的物种有紫马唐、鬼针草、狗尾草、牛筋草、刺苋和葎草。2)自生植物群落优势种总体联结性呈不显著正联结(P>0.05),χ^(2)检验与联结系数(A_(C))正负联结比分别为0.74、1.04,正联结优势不明显,表明自生植物群落优势种的种对间联结性较弱,稳定性相对较差,各物种趋于独立分布。3)CCA排序表明,影响自生植物群落优势种分布的土壤因子是土壤含水量和土壤pH。研究结果可为城市闲置地荒野景观营建提供理论依据和实践指导。Based on the ranking method of niche theory,interspecific association and canonical correspondence analysis(CCA),this paper analyzed the interspecific associations of dominant species of volunteer plant communities in the vacant land of Zhengzhou Beilonghu Park and its relationship with soil factors to reveal the structure and distribution characteristics of volunteer plant communities.The results showed that 1)the degree of niche overlap of dominant species in volunteer plant communities was generally low,and the interspecific competition was not keen;the species with higher importance values and niche widths were Digitaria violascens,Bidens pilosa,Setaria viridis,Eleusine indica,Amaranthus spinosus and Humulus scandens.2)The overall connection of the dominant species in the volunteer plant communities showed no significant and positive connection(P>0.05),and the positive and negative connection ratios of theχ^(2) test and the connection coefficient(A_(C))were 0.74 and 1.04,respectively,the positive connection advantage was not obvious,indicating that the inter-species connection of the dominant species in the volunteer plant communities is weak,the stability is relatively poor,and the individual species tends to be distributed independently.3)The CCA ranking indicated that the soil factors affecting the distribution of dominant species in volunteer plant communities were soil water content and soil pH.This research can provide theoretical basis and practical guidance for the construction of wilderness landscape in urban vacant land.

关 键 词：郑州市 闲置地 自生植物 生态位 种间联结 典范对应分析(CCA) 

分 类 号：S718.5[农业科学—林学]