伊犁河谷不同生境羊草种群构件的年龄结构  

Age Structures of Components of Leymus chinensis Population in Different Habitats in the Yili River Valley Area,China

作　　者：贾风勤[1] 贾娜尔.阿汗 张相锋[1] 张维[1] 赵玉[1] 

机构地区：[1]伊犁师范学院化学与生物科学学院,新疆伊宁835000

出　　处：《中国草地学报》2011年第2期95-99,共5页Chinese Journal of Grassland

基　　金：新疆维吾尔自治区自然科学基金项目(2009211A11);新疆维吾尔自治区高校科研计划科学研究重点项目(XJEDU2008I36)

摘　　要：对伊犁河谷昭苏县杨树群落(H1)、羊草单优势种群落(H2)生境内的羊草无性系种群年龄结构进行对比分析。结果表明:(1)H1、H2样地内羊草无性系种群分蘖株数量分别由3个龄级和4个龄级组成,且随着龄级的增大迅速减少;各生境羊草种群年龄结构同为增长型。(2)两个样地羊草无性系种群根茎长度均由4个龄级组成,其中H1样地羊草无性系种群根茎长度年龄结构为增长型,H2样地为稳定型。(3)两个样地羊草无性系种群分蘖株生物量与分蘖株数量龄级构成相同,年龄结构均为增长型;根茎生物量均由4个龄级组成都为稳定型。各生境分蘖株和根茎生物量年龄结构均以低龄级居于优势位置。The age structures of Leymus chinensis clonal population were studied in Zhaosu county where was in Yili River valley area.The habitat of Leymus chinensis can be divided into two different types,Populus community（H1）,Leymus chinensis single dominant speciecs community（H2）.The results showed that：（1） The tillers consisted of three age classes in H1 and four age classes in H2,and discreased with increasing age quickly;The tillers structure in the two habitat were the same,which was an increasing type.（2）The rhizomes lengh consisted of four age classs in two habitats.The age structure of lengh of rhizomes of Leymus chinensis was an increasing type in H1,steady type in H2.（3） The age structure of tillers biomass in two habitats was same as the tillers,and were increasing type;the rhizome biomass was consisted of four age classes in two habitats,which were blong to steady type.The lower age classs was predominant in age structure of tiller plants and rhizome biomass in H1 and H2 habitats.

关 键 词：伊犁河谷 羊草 无性系植物 分蘖株 根茎 年龄结构 

分 类 号：Q948.15[生物学—植物学]