土默川平原盐生植物种间亲和性研究  

INTERSPECIFIC AFFINITY OF Halophytic vegetation ON TUMOCHUAN PLAIN

作　　者：王广元[1] 蒙荣[1] 李跃进[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2013年第4期64-69,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金项目资助(40861011)

摘　　要：对土默川平原上的20个主要盐生植物种进行了种间关联和相关性的研究。结果表明:土默川平原盐生植物种间总体上表现为不显著的正关联。这20种盐生植物所组成的190个种对中,58对表现为正关联,其中有38对显著或极显著,有132对表现为负关联,其中66对显著或极显著。负关联的种对多,正关联的种对少,说明土默川平原植被处于演替中期,群落组成尚不稳定。以正关联的强弱为基础,以负关联为界限,并参考种间关联星座图、Ochiai关联指数和Spearman秩相关系数,将土默特平原20种盐生植物划分为5个生态种组,生态种组内各种具有显著的正关联性。lnterspecific association between the dominant species of halophytic vegetation on Tumoclman Plain were analyzed by using X2 - test and association indices. The results indicated that： the overall interspecific association of halophytic vegetation on Tumochuan Plain showed inapparent positive association. 58 species - pairs had positive association coefficient and 132 species - pairs had negative association coefficient by X2 - test. It could be deduced that the community was instable, because the species - pairs of negative asso-ciation was more than the species - pairs of positive association. The dominant species were divided into 5 ecological species groups by using the constellation diagram of interspeeific association. The species in the same ecological groups had the same way of utilizing resourccs.

关 键 词：土默川平原 盐生植物 种间关联 生态种组 

分 类 号：S54[农业科学—作物学]