干旱区生态环境知识资源中心(Arid): 干旱荒漠区封育沙地植被群落特征变化研究

Arid

	干旱荒漠区封育沙地植被群落特征变化研究
其他题名	Characteristics of Vegetation Community of Fencing Sandy Land in Arid Desert Area
	王燕; 王辉; 李永兵; 王婷婷
ISSN	1000-288X
出版年	2009
卷号	29 期号:5 页码:40-44
中文摘要	以天然植被围栏封育和人工种植+围栏封育措施下沙地植物群落为对象,以无封护的流动沙地做对照,研究了不同恢复措施对沙地群落物种组成及结构变化的影响.结果表明,(1)封育15 a后,人工种植+围栏封育区侵入物种的丰富度随演替的进展已达12种,其中猪毛菜7.562株/m~2,碟果虫实3.233株/m~2,雾冰藜3.017株/m~2,沙米1.615株/m~2,狗尾草1.112株/m~2.种类组成及生活型结构在向天然植被围栏封育区植物群落靠近,但两者间仍表现出较大差异.(2)在类型组成上,两种封育措施区差异主要表现在优势科及各科种类数量上.(3)在综合多样性特征上,两种措施区草被层的Shannon指数和丰富度指数存在显著差异,而其余各指数两者差异均不显著,但天然植被围栏封育区灌木层的生态优势度指数较高.(4)群落的相似性指数表明,两种封育措施间的植物群落差距较大,且2种封育措施下的植物群落与植被呈零星状分布的无封护措施的流动沙地相比,生态差距均十分显著,这表明封育可明显促进沙地植被的多样性恢复,其中人工种植对沙地植物群落物种多样性恢复的作用是相对缓慢而渐进的.
英文摘要	Structure characteristics of plant community with two restoration measures, namely natural vegetation enclosure and artificial cultivation + enclosure, were investigated in southern margin of Tengger Desert. Moving sandy land without enclosure was taken as the control. Results showed that the invade species richness of artificial cultivation + enclosure increased to 12 species after 15 year enclosure, in which density of Artemisia scoparia was 7. 6 plants/m~2 ; Corispermum patelliforme , 3. 2 plants/m2 ; Bassia dasyphylla 3. 0 plants/m~2 ; Agriophyllum squarrosum , 1.6 plants/m~2 ; and Setaria viridis , 1. 1 plants/m2. The species composition and life forms were closed to natural vegetation enclosure, but the differences still existed. In families and genera compositions, the differences of the two measures were dominant family and the species numbers of each family. In species diversity, Shannon index and richness index of natural vegetation enclosure was significantly different compared with artificial cultivation + enclosure, except the other indexes. In shrub layer, ecological dominance index of natural vegetation enclosure was higher than artificial cultivation + enclosure. The similarity index indicates that ecological distance between artificial cultivation + enclosure and natural vegetation enclosure was still far and ecological distances between the two restoration measures and moving sandyland + non-enclosure of vegetation sprinkling distribution were significantly far. In conclusion, enclosure can significantly promote the diversity restoration of sandy land vegetation and the effects of cultivation on restoration of species diversity on sandy land is relatively slow and gradual.
中文关键词	干旱荒漠区 ; 封育沙地 ; 恢复机制 ; 群落特征
英文关键词	arid desert area fencing sandy land restoration mechanism community characteristic
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3736360
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/2XILL650/224172
作者单位	甘肃农业大学,林学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	王燕,王辉,李永兵,等. 干旱荒漠区封育沙地植被群落特征变化研究[J]. 甘肃农业大学,2009,29(5):40-44.
APA	王燕,王辉,李永兵,&王婷婷.(2009).干旱荒漠区封育沙地植被群落特征变化研究.,29(5),40-44.
MLA	王燕,et al."干旱荒漠区封育沙地植被群落特征变化研究".29.5(2009):40-44.