干旱区生态环境知识资源中心(Arid): 紫云县不同程度石漠化区域植物多样性研究

Arid

	紫云县不同程度石漠化区域植物多样性研究
其他题名	Studyon the plant diversityof vegetation under different rockydesertification degrees in Ziyun County
	张敏; 陈世容
来源期刊	草原与草坪
ISSN	1009-5500
出版年	2015
卷号	35 期号:1 页码:78-83
中文摘要	对贵州省紫云县石漠化区域不同程度石漠化区域植物种类组成进行抽样调查,在40个样方内共查得34科、61属、72种植物,其中,禾本科植物占33.33%,是绝对优势种,单属、单种的科占总科数的76.47%;比较不同石漠化阶段的植物种类组成,结果表明:随着石漠化程度加深及石灰岩植被的生境向旱生化和岩生化发展,植物群落结构越来越趋于简单,到极重度石漠化阶段植物的科、属、种数比轻度石漠化阶段依次减少68.18%,69.23%和70.73%;从轻度、中度、重度到极重度石漠化阶段,植物的Margalef丰富度指数、Shannon-Wiener指数和Pielou均匀度指数都呈下降趋势,而Simpson多样性指数却呈增加趋势,反映出原本多样化的物种逐渐被适应力更强的少数几个物种替代,并最终随着土壤流失,岩石裸露,只有少数低等植物生存的石漠化全过程。
英文摘要	40 sampling plots were selected to investigate the plant compositions in rocky desertification regions with different degrees in Ziyun County,Guizhou Province.There are 34 families,61 genera and 72 species of plants and grasses are the absolute dominant species which account for 33.33%.The families with single species or genera account for 76.47%.Comparing the plant compositions of different desertification stages,results showed limestone vegetation habitats changed more xerophytic and rocky with the deepening of desertification degree,and plant community structure is getting simple.Comparing with that in the light degree rocky desertification stage,the plant families,genera and species had decreased by 68.18%,69.23%and 70.73%in very severe desertification stage,respectively.The plant Margalef richness index,Shannon-Wiener index and Pielou evenness index showed a downward trend,while the Simpson index increased along with the mild,moderate,severe and very severe desertification stage,which reflected that the original communities with higher biodiversity had replaced gradually by a few adaptable species,and finally only a few lower plants can survive in this region accompanying with soil erosion,rock baring in the whole process of rocky desertification.
中文关键词	紫云县 ; 石漠化 ; 植物种类组成 ; 物种多样性
英文关键词	Ziyun county rocky desertification vegetation composition biodiversity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIODIVERSITY CONSERVATION
WOS研究方向	Biodiversity & Conservation
CSCD记录号	CSCD:5396243
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232442
作者单位	贵阳市苗圃所, 贵阳, 贵州 550002, 中国
推荐引用方式 GB/T 7714	张敏,陈世容. 紫云县不同程度石漠化区域植物多样性研究[J],2015,35(1):78-83.
APA	张敏,&陈世容.(2015).紫云县不同程度石漠化区域植物多样性研究.草原与草坪,35(1),78-83.
MLA	张敏,et al."紫云县不同程度石漠化区域植物多样性研究".草原与草坪 35.1(2015):78-83.