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山西翅果油树群落特征及多样性研究 被引量:1

Studies on Species Characteristics and Diversities of Elaeagnus Mollis Community in Shanxi
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摘要 翅果油树为国家二级珍稀濒危保护植物,集中分布于临汾的乡宁(西坡)、翼城(甘泉)和运城的平陆(狮沟、望远),本文通过对翅果油树群落区系成分、生活型、群落的结构与外貌及生物多样性的比较分析,探明了翅果油树群落基本性质及影响群落变化的因素.结果表明:翅果油树群落区系组成较为丰富,群落物种生活型以高位芽居多,共占总数的43.14%,群落结构可分为灌、草两个层次,亦有层间植物伴生.群落多样性研究发现,在干扰强烈的生境中,翅果油树群落具有较低的丰富度指数、多样性指数和均匀性;干扰强度较小的生境中,群落具有较高的丰富度指数、多样性指数和均匀性. Elaeagnus Mollis is an indemic to China,being one of the China protected two-grade rare and endangered plants,and are distributed in Yicheng(Ganquan),Xiangning(Xipo),Pinglu(Shigou,Wangyuan).Through compare the floral element,life form,structure,physiognomy and diversity of E.Mollis communities shows that the flora has some typical characteristics of north-temperate,which accounts for 37.25%;the dominant life type is phaenerophyta which accounts for 43.14%;the community can be structurally divided into shrub layer and herb layer.The results show as follows: there were lower species richness,species diversity and evenness in E.mollis communities under intensive disturbance habitats.Moreover,there were higher species richness,evenness and species diversity under disturbance situation to a small extent.
出处 《山西师范大学学报(自然科学版)》 2011年第2期95-99,共5页 Journal of Shanxi Normal University(Natural Science Edition)
基金 山西省出国留学基金项目(20081073)
关键词 翅果油树 群落特征 重要值 多样性 Elaeagnus mollis species characteristics diversities
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