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当前位置: 首页 > 文章 > 紫云县不同程度石漠化区域植物多样性研究 草原与草坪 2015 (1) 78-83
Position: Home > Articles > Study on the plant diversity of vegetation under different rocky desertification degrees in Ziyun County Grassland and Turf 2015 (1) 78-83

紫云县不同程度石漠化区域植物多样性研究

作  者：
张敏;陈世容
单  位：
贵阳园景园林艺术工程有限公司;贵阳市苗圃所
关键词：
紫云县;石漠化;植物种类组成;物种多样性
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。
译  名：
Study on the plant diversity of vegetation under different rocky desertification degrees in Ziyun County
作  者：
ZHANG Min;CHEN Shi-rong;Institute of Plant Nursery of Guiyang City;Guiyang Landscape Art and Engineering Co.,Ltd.;
关键词：
Ziyun county;;rocky desertification;;vegetation composition;;biodiversity
摘  要：
40sampling plots were selected to investigate the plant compositions in rocky desertification regions with different degrees in Ziyun County,Guizhou Province.There are 34 families,61genera 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.

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