差不嘎蒿的分布及其在天然植被演替中的地位  

The distribution of Artemisia halodendron and its status in the natural vegetation succession

作　　者：李进[1] 

机构地区：[1]中国科学院兰州沙漠研究所

出　　处：《中国沙漠》1991年第2期55-60,共6页Journal of Desert Research

摘　　要：在中国差不嘎蒿主要分布在北纬42～50°,东径116～124°之间的温带半湿润、半干旱区的沙地上。差不嘎蒿群落类型较多,植物种丰富,结构较复杂,在半流动、半固定沙地植物群落中占绝对优势,起建群种作用。差不嘎蒿生态幅广,从流动沙丘背风坡到固定沙丘均有分布,但其最适宜的生境是水分条件较好、有些风蚀与沙埋的半流动、半固定沙地。随沙丘固定程度的提高,差不嘎蒿将退出群落,让给级冷蒿、糙隐子草等植物。By the research of this paper, the results show that: A. halodendrons distributes on sand land which belongs to the area of semi-humid and semi-arid climate of temperate zone between 42°— 50°W, 116°— 124°E. The average annual precipitation of the zone varies between 230—538. 5mm. There are many types of its community which has a complicated structure and abundant plant species. As a constructive species, it occupies an absolute superiority in the communityies on the semi-shifting and semi-fixed dunes. Its ecological amplitude is relatively wide, it distributes from the leeward of shifting dunes to fixed dunes, but its favourable habit is semi-shifting and semi-fixed dunes which have better water condition and sand burying problem. With the increasing in dune stabilization degree, it will be withdrawn from the community and replaced by the successor species of Artemisia frigida and Cleistogenes squarrosa etc.

关 键 词：差不嘎蒿 分布 演替 固沙植物 

分 类 号：S727.23[农业科学—林木遗传育种]