摘要
在流动、半固定、固定沙地上选取典型样地,对毛乌素沙地油蒿群落的种类组成及其生态类型结构进行调查。结果表明,油蒿群落分为灌木层和草本层。灌木层以油蒿为主,伴有花棒、羊柴等,油蒿高度在0.51～0.62 m,并且呈明显的集群分布;草本层种类稀少,共有11种,隶属9科10属,以菊科、禾本科为主;样地有3个植被分布区型,其中蒙古—华北区型种类最多(45.5%),其次为蒙古—东北—兴安—华北区型(36.4%),蒙古—东北—华北分布区型种类最少(18.2%);3个水分生态类型中,旱生植物最多(54.5%),中旱生的和中生的分别占36.4%和9.1%;在4个生活型中,地面芽植物最多,占36.4%。
Typical sample plots were chose in flow,semi-fixed and fixed sand and the species composition and the ecology type structure of Artemisia ordosica community were investigated. The results showed that the Artemisia ordosica community could be divided into 2 layers, namely tree shrub and herb. Shrub layer was mainly composed of Artemisia ordosica, about 0.51 m to 0.62 m high, which follow obvious clumped distribution, accompanying with Hedysarum scoparium and Hedysarum fruticosum, ere ;The herb layer had only 11 species ,which subordinated 10 branches and 9 categories. Herb layer was composed of composite and gramineae primarily;There are 3 vegetation distribution areas in sample plots , MongolianNorth China distribution area was the most （45.4%）, followed by Mongolian -Northeast-Dahuricia-North China distribution area （36.4%）, and Mongolian-Northeast-North China distribution area was the least （ 18. 2% ）. Among three water ecological types xerophytes occupied most （54.5%） ,and mesoxerophytes and mesophytes occupied 36.4% and 9.1%. In 4 kinds of life,forms hemicryptophyte was the most,accounting for 36.4%.
出处
《安徽农业科学》
CAS
北大核心
2009年第24期11801-11804,共4页
Journal of Anhui Agricultural Sciences
基金
国际科技合作项目(2008DFA32270)
关键词
油蒿
群落结构
毛乌素沙地
宁夏
Artemisia ordosica
Community structure
Maowusu sandy laud
Ningxia
