干旱区生态环境知识资源中心(Arid): 腾格里沙漠植物区系特征分析

Arid

	腾格里沙漠植物区系特征分析
其他题名	An analysis of the Tengger Desert spermatophytic flora characteristics
	马全林1 ; 张锦春 1; 李得禄 1; 杨昊天 2
来源期刊	草业学报
ISSN	1004-5759
出版年	2020
卷号	29 期号:3 页码:16-26
中文摘要	腾格里沙漠地处亚洲中部荒漠区和草原区的过渡地带,具有较为丰富的物种组成和复杂的植物区系。运用植物区系地理学的基本原理,在开展大量实地调查研究的基础上,参考相关植物和标本数据库及文献,对腾格里沙漠天然种子植物区系组成、地理成分进行分析。结果表明,腾格里沙漠植物区系位于中国西北植物地理区中间过渡带,属典型荒漠植物区系,由60科201属382种荒漠种子植物组成。其植物区系优势现象明显,区系植物趋向于集中在>10种的优势科内,优势科物种比例高达64.40%。区系植物分化程度较大,单种属和寡种属多达178属,占区系植物总属数的88.56%。植物区系地理成分复杂多样,植物属分布有14个分布型和9个分布变型,为中国植物属分布类型数的50.00%,其中温带成分分布属比例大,为44.78%,具有典型的温带性质;古地中海成分分布属为21.39%,对植物组成具有重要影响。植物科分布以世界分布型占优势,包含38个世界广布科,世界分布的优势科和表征科分别占到优势科和表征科总数的77.78%和40.00%,与沙漠气候严酷性相一致;热带成分涉及11个科,占区系总科数的18.33%,说明腾格里沙漠植物区系的发生具有热带亲缘性。腾格里沙漠植物区系起源古老并兼有新生进化成分,分布有原始多心皮类植物科、一定数量起源古老的孑遗成分和较多的间断分布类型,以及相当年轻和进化的科,反映出腾格里沙漠植物区系起源的复杂性。
英文摘要	Tengger Desert has a complex flora with a rich species composition and as it is located in the transitional zone between desert and grassland in central Asia.Based on a large number of site investigations,and reference to relevant plant and specimen databases and literature,we catalogued the spermatophytic flora and species geographical distribution categories in Tengger Desert through application of the basic principles of floristic geography.We found that the spermatophytic flora of Tengger Desert fitted in the middle transitional zone of Northwest China,and had the characteristics of a typical desert flora,including 382natural spermatophytic species,belonging to 201genera and 60families.Floristic dominance was obvious in Tengger Desert where the floristic species tended to be concentrated in dominant families with more than 10species,accounting for 64.40%of all the species.Floristic plants were highly differentiated,and there were as many as 178genera represented by single species and oligos,accounting for 88.56%of all the genera.The Tengger desert flora contained a complex mix of genera from 14global distribution categories and a further 9sub-categories,including among others:cosmopolitan(40genera),pantropic distributed(19genera)and north temperate distributed(26genera).The proportion of genera of temperate origin was 44.78%,which indicated the typical temperate zone characteristics of the Tengger Desert flora.Genera of paleo-mediterranean origin were also an important influence,comprising 21.39%,of the flora.The family representation was dominated by types with world distribution,including 38globally widespread families.The proportions of globally dominant and representative families present in the Tengger Desert were 77.78%and 40.00%,respectively,which is consistent with the harsh desert climate in the region.The tropical component comprised 11families,accounting for 18.33%of all the families,which showed that the flora of Tengger Desert has tropical links.However,the floristic origin of Tengger Desert was ancient and contained some new evolutionary forms,including primitive families of polycarpous plants,as well as some ancient relic species and many types with discontinuous distribution.In addition,there were relatively young and evolving families.Overall,the data indicate a very complex origin of the Tengger Desert flora.
中文关键词	荒漠植物区系 ; 优势科 ; 表征科 ; 区系地理成分 ; 腾格里沙漠
英文关键词	desert flora dominant family representative family floristic geographical composition Tengger Desert
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6666783
来源机构	中国科学院西北生态环境资源研究院 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315937
作者单位	1.甘肃省治沙研究所, 民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国; 2.中国科学院西北生态环境资源研究院, 中科院沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	马全林,张锦春,李得禄,等. 腾格里沙漠植物区系特征分析[J]. 中国科学院西北生态环境资源研究院, 甘肃省治沙研究所,2020,29(3):16-26.
APA	马全林,张锦春,李得禄,&杨昊天.(2020).腾格里沙漠植物区系特征分析.草业学报,29(3),16-26.
MLA	马全林,et al."腾格里沙漠植物区系特征分析".草业学报 29.3(2020):16-26.