干旱区生态环境知识资源中心(Arid): 肃北地区裸果木荒漠群落构成特征及物种多样性研究

Arid

	肃北地区裸果木荒漠群落构成特征及物种多样性研究
其他题名	A study on species diversity of a Gymnocarpos przewalskii community in the Subei desert
	柴永青; 曹致中; 蔡卓山
来源期刊	草业学报
ISSN	1004-5759
出版年	2010
卷号	19 期号:1 页码:21-27
中文摘要	于2006-2008年对稀有植物裸果木在甘肃肃北的分布情况及其群落特征进行了调查研究,结果表明,在肃北北山地区裸果木主要分布在海拔1 500～1 600 m,在南山地区主要分布在海拔1 900～2 780 m,均分布于山前冲积扇、沙砾质戈壁和干河床地带.裸果木荒漠群落物种组成共计44种,隶属13科,31属,植物区系以古地中海、西亚至中亚分布型为主,约占54.8%.植物区系与古地中海植物区系有密切的联系.其次是北温带分布型,约占19.4%,裸果木分布区与北温带分布型植物区系联系紧密.第3是世界分布种,约占9.7%.群落的多样性指数均较高.但其高度和盖度较低,裸果木中老龄植株较多,而幼龄植株很少.种群有衰退趋势.
英文摘要	During 2006-2008, distribution and community characteristics of Gymnocarpos przewalskii which is a type of rare plant in the north of Subei were investigated. G. przewalskii is mainly distributed on Piedmont alluvial fan, gravel and dry river bed areas at altitudes of 1 500-1 600 m in the northern mountainous area of Subei and 1 900-2 780 m in the southern mountainous area of Subei. Species composition of G. przewalskii plant communities consist of 44 species that belong to 31 genera 13 families. Among them, the gravelly desert distribution elements are in the ancient Mediterranean and West Asia to Central Asia (54.8%). There is close relationship between the floras of G. przewalskii desert communities and those of the ancient Mediterranean. The North temperate distribution pattern takes second place (19.4%). Distribution of G. przewalskii has a strong relationship with floras in North temperate distribution patterns. World distribution of the species is 9.7%. The diversity indexes of the floras are all high, but physical height and cover of floras are low. The number of old plants is more than that of young plants, which implies that the whole floras show a trend of recession.
中文关键词	肃北 ; 裸果木 ; 群落 ; 物种多样性
英文关键词	Subei Gymnocarpos przewalskii community plant diversity
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:3827838
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224749
作者单位	甘肃农业大学草业学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	柴永青,曹致中,蔡卓山. 肃北地区裸果木荒漠群落构成特征及物种多样性研究[J]. 甘肃农业大学,2010,19(1):21-27.
APA	柴永青,曹致中,&蔡卓山.(2010).肃北地区裸果木荒漠群落构成特征及物种多样性研究.草业学报,19(1),21-27.
MLA	柴永青,et al."肃北地区裸果木荒漠群落构成特征及物种多样性研究".草业学报 19.1(2010):21-27.