干旱区生态环境知识资源中心(Arid): 腾格里沙漠东南缘公路对路域植被物种组成的影响

Arid

	腾格里沙漠东南缘公路对路域植被物种组成的影响
其他题名	Effects of highway on the vegetation species composition along a distance gradient from road edge in southeastern margin of Tengeer Desert
	冯丽 1; 李新荣1 ; 郭群 2; 张景光 1; 张志山1
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2011
卷号	22 期号:5 页码:1114-1120
中文摘要	沿腾格里沙漠东南缘省道201线沙坡头-景泰段2侧设置48条垂直于公路的样线,调查距路缘不同距离处植被的物种分布特征,研究干旱荒漠区公路建设和运营对植被物种组成的影响.结果表明:随着距路缘距离的增加,草本植物的种数、盖度、生物量和alpha多样性均逐渐减小,5m后与对照差异不显著,高度在0～6m处较大,密度变化不显著.0～2m处草本植物的物种周转速率较低,2～5m处最高,10m后物种组成与对照相似.路缘处的草本植物群落以禾本科植物占优势,抗干扰能力较强的白草、虎尾草和冰草占草本植物总个体数的68.6%.其中,虎尾草在距路缘1m后,白草和冰草在距路缘2m后数量和频度迅速减小,而菊科植物茵陈蒿和冷蒿急剧增加,距路缘2m后占草本植物总个体数的70%.路缘处灌木植物的盖度和密度显著小于对照,物种组成与对照没有显著差异.
英文摘要	Aimed to examine the effects of highway on the vegetation species composition in arid desert area,forty-eight transects perpendicular to the provincial highway 201 from Shapotou to Jingtai in the southeastern margin of Tengger Desert were installed,with the vegetation species distribution along a distance gradient from the road edge investigated.The results showed that with increasing distance from the road edge,the species number,coverage,biomass,and alpha-diversity of herbaceous plants declined,but had no significant differences with the control beyond 5 m.Within 0-6 m to the road edge,the herbaceous plant height was greater than that of the control,but their density had less change.Within 0-2 m to the road edge,the species turnover rate of herbaceous plants was lower;at 2-5 m,this rate was the highest;while beyond 10 m,the species composition of herbaceous plants was similar to that of the control.The herbaceous plant community at the road edge was dominated by gramineous plants,with the disturbance-tolerant species Pennisetum centrasiaticum,Chloris virgata,and Agropyron cristatum accounting for 68.6% of the total.C.virgata beyond 1 m to the road edge had a rapid decrease in its individual number and presence frequency,P.centrasiaticum and A.cristatum beyond 2 m also showed a similar trend,while the composite plants Artemisia capillaris and A.frigida beyond 2 m from the road edge had a rapid increase in its individual number,accounting for 70% of the herbaceous plants.At the road edge,the coverage and density of shrubs were significantly lower than those of the control,but the species composition had no significant difference.
中文关键词	干旱荒漠 ; 道路建设 ; 物种多样性 ; 分布格局
英文关键词	arid desert highway construction species diversity distribution pattern
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4207898
来源机构	中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227337
作者单位	1.中国科学院寒区旱区环境与工程研究所沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国; 2.中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	冯丽,李新荣,郭群,等. 腾格里沙漠东南缘公路对路域植被物种组成的影响[J]. 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所,2011,22(5):1114-1120.
APA	冯丽,李新荣,郭群,张景光,&张志山.(2011).腾格里沙漠东南缘公路对路域植被物种组成的影响.应用生态学报,22(5),1114-1120.
MLA	冯丽,et al."腾格里沙漠东南缘公路对路域植被物种组成的影响".应用生态学报 22.5(2011):1114-1120.