山西不同区域翅果油树群落特征的研究  

Community Characteristics of Elaeagnus Mollis in Source Regions of Shanxi

作　　者：毛婷婷[1,2] 毕润成[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041004 [2]晋中学院生物科学与技术学院,山西晋中030600

出　　处：《山西师范大学学报（自然科学版）》2011年第3期98-102,共5页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(30470296);山西省自然科学基金(20031090)

摘　　要：选择山西翼城、乡宁、平陆3个地区的典型翅果油树群落为研究对象,采用样方法调查群落,初步分析了山西不同区域翅果油树群落的种类组成、区系特点、群落外貌、垂直结构等群落学特征,并计测了Simpson指数和Shannon-Wiener指数.结果表明:山西翅果油树群落呈现大尺度区域同质性和小尺度区域异质性的特点.翅果油树群落共出现51种植物,隶属于30科45属,北温带分布属占优势,显示了翅果油树群落的北温带性质;地面芽植物和高位芽植物是群落的优势层片,不同区域间生活型谱的差异与其地理位置和气候相吻合.三个区域翅果油树群落垂直结构可分为灌木层、草本层,但翼城种群还具乔木层.重要值分析结果表明,三个区域的建群种均是翅果油树,草本层的优势种相同,均为羊胡子草和铁杆蒿,但灌木层的次优势种有所差异.Simpson指数和Shannon-Wiener指数在描述群落性质、结构和数量特征时具有较好的一致性.Typical Elaeagnus mollis communities distributed in Yicheng, Xiangning and Pinglu of Shanxi Province were selected as three sampling locations and investigated by sampling method. The community characteristics were analyzed about the specific com- position, the flora feature, the community physiognomy and the vertical structure, and the species diversity （Simpson index and Shan- non-Wiener index） was measured in the different sample plots. The results showed that the E. moUis communities were homogeneous at com^e scale and regionally heterogeneous at fine scale. The conrmunities were composed of 51 species belonging to 30 families and 45 genera, and they could be the feature of North Temperate Zone with the genus of boreal temperate zone being absolute dominance. The species and quantity of hemicryptophyte and phanerophytes were showed for the area feature of distribution of E. moUis community, and the difference of life-form spectrum between three plots reflected the regional and climatic disparity. All the community could be structurally divided into shrub layer and herbaceous layer besides Yicheng with extra tree layer. The Simpson index and Shannon-Wie- ner index demonstrated higher consistency to elaborate the species diversity.

关 键 词：翅果油树 群落特征 区系 物种多样性 

分 类 号：Q948.15[生物学—植物学] Q949.761.2