包头地区野生种子植物区系组成及特征研究  

Study on Flora Composition and Characteristics of Wild Seed Plants in Baotou Area

作　　者：樊永军[1] 陈秀莉[1] 赵艳玲[1] FAN Yongjun;CHEN Xiuli;ZHAO Yanling(Department of Biology Science and Technology, Baotou Teachers College, Baotou, Inner Mongolia 014030, China)

机构地区：[1]包头师范学院生物科学与技术学院,内蒙古包头014030

出　　处：《西北植物学报》2018年第2期363-369,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(31260132;31460188);内蒙古自然科学基金(2014MS0302;2016MS0301)

摘　　要：通过对包头地区野生种子植物区系进行调查、统计、整理,从科、属、种3个分类等级上对其区系地理成分、生活型、水分生态类型分别进行分析,探讨该区植物区系的起源和演化,为保护和利用该区珍稀、特有物种及其生存环境提供依据。结果表明:(1)包头地区有野生种子植物71科、274属、595种,其中,裸子植物2科3属5种,被子植物69科271属590种,占内蒙古被子植物的全部科、属、种的62.28%、43.81%、27.78%。(2)从科、属组成来看,包头地区野生种子植物组成中单属科和寡属科(2~4)、单种属和寡种属(2~4)构成了该地区植物科、属的主体部分。(3)从地理成分来看,温带成分占绝对优势;生活型以草木植物为主,占79.83%;从水分生态类型看,中生植物是该区的主要成分,占55.62%,旱生植物在该区系中也占有相当比重,占36.98%,说明该地区水分条件较差,在气候区上属于半干旱地区。The flora of wild seed plants in Baotou area was investigated,counted and arranged,and the geography distribution,life styles,water ecotypes of seed plants here from taxonomic grade of families,genera and species were analyzed.The results showed that:(1)there are595species of seed plants in Baotou area,which belong to274genera and71families.Among them there are2families,3genera,5species in gymnosperm;69families,271genera,590species in angiosperm,which accounted for62.28%,43.81%and27.78%of all families,genera and species of angiosperms in Inner Mongolia.(2)From the point view of the composition of family and genus,the single-genus family and few-genera family were evident in the number of species of wild seed plants in Baotou area;(3)From the point view of the geographical component,temperate components are dominant.Herbage is dominant in life style.In water ecotype,the mesophyte is most primary,the xerophile is primary either.That means the water condition is worse and here is semi-drought area.

关 键 词：包头地区 野生种子植物 生活型 也理成分 

分 类 号：Q948.5[生物学—植物学]