干旱区生态环境知识资源中心(Arid): 锡林郭勒荒漠草地种子植物区系研究

Arid

	锡林郭勒荒漠草地种子植物区系研究
其他题名	Research on Spermatophyte Flora in the Xilingol Desert Steppe
	岳秀贤; 刘果厚; 刘慧娟; 扈顺
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2011
卷号	28 期号:4 页码:643-648
中文摘要	通过对锡林郭勒荒漠草地种子植物的组成特征、区系地理成分的分析,结果表明:该区有种子植物55科180属348种,被子植物占优势。科属组成分析表明,区系优势现象较明显,优势科、大属和较大属均以温带分布占优势;属种的地理成分分析表明,温带分布属、种占优势,热带分布的属、种所占比例很小,表明温带属性是该地区植物区系的基本属性,并受泛热带植物区系的影响。不同地区植物区系相似性系数比较研究表明,与阿拉善荒漠区关系最为密切,草地植物区系具有明显的荒漠化特征。地理成分复杂、联系广泛。特有现象不明显,区系起源新老兼备,以新生进化成分为主。
英文摘要	The local flora structure and the distribution characteristics of seed plants in the Xilingol desert steppe were studied based on wild vegetable survey by processing the data,analyzing the plant families,genera and species and applying the methods of botany and phytogeography.It is suggested to protect and utilize rationally the wild plant resources in the study area,and an important reference is provided as the scientific basis to protect the local plant species.The results show that the local plants belong to the desert steppe flora.So far 348 endemic species in 180 genera and 55 families in the Xilingol desert steppe were recorded.In which there were 4 species in 2 genera and 2 families of Gymnosperm and 344 species(including 31 varieties)in 178 genera and 53 families of Angiosperm.Composed by the families and genera,the plurimotypic families(including more than 10 species),monotypic genera and oligotypic genera were the main part of the local flora and the main sources of flora complexity and species diversity to be as the widely distributed local species.At family level,the proportion of Gramineae,Compositae,Leguminosae,Chenopodiaceae,Cruciferae and Polygonaceae was the highest,there was a trend that the floristic element laid in big families of spermatophyte,and the dominance of plurimotypic families was evident.The proportion of 45 families with less than 10 species was 81.83% of the total families in the region.At genus level,although plurimotypic genera and plurotypic genera were the dominant species of local plant communities and the typical components,but they were not the main part,they had an important influence on the structure of flora and vegetable composition.The single-species genera and few-species genera are the main part of the local flora and the main sources of the local flora complexity and species diversity to be as the widely distributed local species.After analyzing the floristic geographical element of genera and species,the results reveal that the temperate element genera and species were the main part of the local flora,the geographic element of the flora was the multiplicity,and the temperate element was the main part of local flora;the temperate element characteristics were the typical features of local flora.The main floristic feature was temperate,but it was affected by pantropical element to a certain extent.The comparison of similarity coefficients of various florae(including the Dalai Lake Nature Reserve,the Dalinor National Nature Reserve,Otindag Sandy Land and Alxa Desert)reveals that the flora had an affinitive relationship with Alxa desert,and the seed plant flora in the steppe had the obvious desertification characteristics.The analysis of floristic geographical element and distribution characteristics in Xilingol desert steppe also indicated that the climate and environmental conditions,ecological amplitude and adaptive capacity of plants affected determinatively the floristic geographic distribution.
中文关键词	荒漠草地 ; 种子植物 ; 植物区系 ; 地理成分 ; 锡林郭勒
英文关键词	desert steppe spermatophyte floristic element geographical element Xilingol
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4255658
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226529
作者单位	内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010019, 中国
推荐引用方式 GB/T 7714	岳秀贤,刘果厚,刘慧娟,等. 锡林郭勒荒漠草地种子植物区系研究[J]. 内蒙古农业大学,2011,28(4):643-648.
APA	岳秀贤,刘果厚,刘慧娟,&扈顺.(2011).锡林郭勒荒漠草地种子植物区系研究.干旱区研究,28(4),643-648.
MLA	岳秀贤,et al."锡林郭勒荒漠草地种子植物区系研究".干旱区研究 28.4(2011):643-648.