山西汾河流域下游草本植物功能群  

Functional groups of herbaceous plants in the lower reaches of Fenhe River basin in Shanxi Province,China

作　　者：范晓[1] 张峰[2] 庞春花[1] 艾莹[1] 候璐丹[1] 程雪莲[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041004 [2]山西大学生命科学学院,太原030006

出　　处：《生态学杂志》2013年第10期2716-2720,共5页Chinese Journal of Ecology

基　　金：山西省软科学研究项目(2012041015-01);山西省留学基金项目(20100012);山西师范大学自然科学基金项目﹙SMYKZ-9;大学生创新实验项目﹙SD2012CXSY-32﹚资助

摘　　要：采用群落生态学的调查方法，在山西汾河流域下游设置草本样方85个；依据调查物种所出现的频率，共选取21个优势种进行种间联结性分析，以χ2检验为基础，结合联结系数AC和共同出现百分率PC来测定优势种间的联结性，根据优势种间的联结性及其在水分梯度上的变化趋势来划分植物功能群。结果表明：优势种组成的210个种对中，总体呈现出负联结，绝大多数种对表现为弱联结性或无联结性。共划分成4个植物功能群：水生型、湿生型、中旱生型和入侵型。同一功能群内物种间表现出显著的正联结，不同功能群间物种表现出负联结性或无联结性。By using the survey methodology of community ecology, a total of 85 sampling plots were installed in the lower reaches of Fenhe River Basin in Shanxi. According to the occurrence frequency of the investigated herbaceous species, 21 dominant species were selected for interspecies association analysis. The associations between dominant species were determined based on the χ2 inspection and in light of the association coefficient （AC） and the percentage co-occurrence （PC）. The functional groups of herbaceous plants in the study area were classified by the associations between dominant species and the variations of moisture gradient. Overall, the 210 species pairs formed by the dominant species showed negative association, but the vast majority of the species pairs showed weak association and non-association. Four herbaceous plant functional groups were classified, i.e., aquatic, hygrophyte, mesoxerophyte, and invasive. Significant positive association was shown between the species in the same functional groups, and negative association or nonassociation was shown between the species of different functional groups.

关 键 词：汾河 种间联结 功能群 草本植物 

分 类 号：Q948[生物学—植物学]