山西太岳山辽东栎群落林下草本植物功能群分类  

Plant Functional Group Classification of Herbaceous Species in Quercus wutaishanica Communities in the Taiyue Mountains,Shanxi Province of China

作　　者：姚雪芹[1] 张钦弟[1] 毕润成[1] 蒋鹏飞[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041004

出　　处：《植物分类与资源学报》2015年第6期849-855,共7页Plant Diversity

基　　金：山西省化学优势重点学科建设生态化学子项目(912019);山西省青年科技研究基金(2013021030-3);山西师范大学校科学研究基金(ZR1218);山西师范大学生命学院科学研究基金(SMYKZ-19)

摘　　要：辽东栎（ Quercus wutaishanica）林是暖温带落叶阔叶林区域典型地带性植被类型之一。辽东栎作为山西具有代表性的地带性植被类型，是山西森林的主要组成部分。以往的研究以辽东栎为对象的成果颇多，对其林下草本层的研究少有报道。太岳山辽东栎群落随着环境梯度（海拔）的变化，林下植物优势种变化明显，草本植物对环境的反应较为敏感，能较好地反映出植被与环境的动态关系。采用样方法，调查了太岳山七里峪辽东栎群落，根据调查结果，通过计算重要值并结合频度，在辽东栎林下草本层选取27个优势度相对较大的物种进行种间联结和相关性分析。χ2。检验为基础，结合联结系数AC和共同出现百分率PC来测定辽东栎林林下草本层优势种种间联结性，并根据此联结性及其聚类分析，以优势种为主体划分植物功能群。结果显示如此划分可行性高，可将辽东栎林下草本层优势种共划分为七组功能群：Ⅰ“广布型”，Ⅱ“森林边缘草甸型”，Ⅲ“湿润疏林型”，Ⅳ“耐寒林隙型”，Ⅴ“山坡林缘型”，Ⅵ“高山型”，Ⅶ“阴湿型”。研究表明：通过水热梯度下草本植物功能群的变化，能较好地反映出辽东栎与环境的相互关系。Quercus wutaishanica is warm temperate deciduous broad-leaved forest region one of the typical vegetation types. Q. wutaishanica vegetation types as a representative of Shanxi, is the main part of shanxi forest. Past research focuses on the subject of Q. wutaishanica results, the study of the herb layer seldom reported. The understory layer dominant species of Q. wutaishanica community on Qiliyu of Taiyue Moutains, whose abundances clearly vary along environmental （altitudinal） gradients. Herbaceous plants highly responsive to changes in environmental conditions that reflect the dynamic relations between vegetation and environment. In this paper, using the method of sample, in- vestigated the community of Q. wutaishanica on Qiliyu of Taiyue Moutains, Shanxi. We used the results of this inves- tigation to calculate species importance values and frequency, which were used to identify 27 dominant species in herbages. χ2 tests, together with association coefficient and percentage cooccurrence, were used to measure interspe- cific associations of the dominant species of herbaceous. Plant functional types （PFFS） were defined according to in- terspecific associations and cluster analysis of the dominant species. In studies of forest understory plant assembla-ges, designating PFTs according to dominant herbaceous species is feasible. Dominant herbaceous species formed seven PFTs- each with its unique spatial distribution and morphological characteristics, are identified Ⅰ. amphige- nous Ⅱ. pelouse-edge Ⅲ. wet-sparse Ⅳ. gap-drought resistant Ⅴ. hill-edge Ⅵ. alpine Ⅶ. dank. Plant function- al types （PFTs） of herbaceous plants varies with altitude gradients, which reflect the relationship between Q. wutaishanica and environment well.

关 键 词：功能群 种间联结 聚类分析 草本植物 太岳山 

分 类 号：Q948[生物学—植物学]