干旱区生态环境知识资源中心(Arid): 石羊河下游荒漠植物区系及其植被特征

Arid

	石羊河下游荒漠植物区系及其植被特征
其他题名	Characteristics of desert flora and vegetation in lower reach of Shiyang River Basin
	刘虎俊; 王继和; 常兆丰; 马全林; 杨自辉; 詹科杰
ISSN	1000-4890
出版年	2006
卷号	25 期号:2 页码:113-118
中文摘要	石羊河下游位于干草原向荒漠过渡区域,有天然种子植物23个科,73个属,123个种,不仅有典型的戈壁荒漠成分,也渗入一些草原化荒漠植物种类.其荒漠植被特征更明显,群落层片结构简单,群丛建群种的74.4%是灌木和半灌木,构成了灌木、半灌木旱生群落;1年生草本植物随季节性降雨可形成＂灌草丛＂,成为荒漠植被的重要组成部分.在植物地理区系成分上,温带成分属占优势,其中地中海至中亚分布型及其变型最多,其次为北温带分布及其变型.整个区域内植物的分布集中在生境较适宜的区域,空间结构的成群性高,但在小区域内植物种的分布则较单一.植被可划分为4个植被型,5个植被亚型,13个群系组,23个群系,38个群丛.地域性植被以绿洲为中心,成环状分布,可分为3个带.
英文摘要	The lower reach of Shiyang River Basin （LSRB） is located at the transition area from steppe to desert. There are 23 families, 73 genus and 123 species of spermatophyte, which are not only the elements of desert and Gobi, but also the steppe desert species. The LSRB has an obvious characteristic of desert vegetation. The structure of synusia is simple, and 74.4 % of association constructive species are shrub or semi-shrub, which composes of shrubbery or semi-shrubbery xerophytic community. The annul herb accounts for a few rate, but makes up ＂shrubbery herb association＂ and acts as an important element of desert vegetation. In the floristic composition, the component of Temperature Zone is dominant, with superior to the species of Mediterranean Sea to Central Asia and their variants, and the second to the species of North Temperate Zone and their variants. The plants centralize in more adaptive habitats, with an obviously clumped distribution in whole area, but the species distribute simply at a small area. The vegetation can be classified into 4 vegetation types, 5 vegetation subtypes, 13 formation groups, 23 formations, and 38 associations. The zonal vegetation distributes circularly with oases, and can be divided into three belts. Such a circular distribution of vegetation in LSRB is quite common in arid zone.
中文关键词	石羊河下游 ; 荒漠植物区系地理 ; 植被 ; 特征
英文关键词	lower reach of Shiyang River Basin desert flora vegetation characteristics.
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:2349822
来源机构	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/2XILL650/220058
作者单位	甘肃省治沙研究所, 甘肃省荒漠化防治重点实验室, 武威, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	刘虎俊,王继和,常兆丰,等. 石羊河下游荒漠植物区系及其植被特征[J]. 甘肃省治沙研究所,2006,25(2):113-118.
APA	刘虎俊,王继和,常兆丰,马全林,杨自辉,&詹科杰.(2006).石羊河下游荒漠植物区系及其植被特征.,25(2),113-118.
MLA	刘虎俊,et al."石羊河下游荒漠植物区系及其植被特征".25.2(2006):113-118.