贵州花江喀斯特地区土壤藻类群落的结构特征  

Characteristics of Soil Algae Community Structure in Huajiang Karst Area of Guizhou

作　　者：杨鸿雁[1] 梁玉华[1] 樊云龙[1] 张凤太[1] 罗绪强[1] 

机构地区：[1]贵州师范学院地理与旅游学院,贵州贵阳550018

出　　处：《贵州农业科学》2013年第11期102-105,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"喀斯特植物磷;钙胁迫的生态适应性调控机制研究"(31100187);贵州省社会发展科技攻关计划项目"喀斯特退化生态系统土壤动物生态指示功能研究"[黔科合SY字(2011)3107];贵州省环境科学教学团队项目"贵州省环境科学教学团队项目"[黔教高(2012)426]

摘　　要：为了解贵州花江喀斯特地区表层土壤藻类植物多样性、物种丰富度、群落共有度及空间分布变化与石漠化程度之间的相关性,对贵州花江喀斯特地区土壤的藻类植物群落特征、区系及分布特点进行了研究。结果表明:花江试验区共镜检出土壤藻类16种(包括变型1种),隶属于3门7目9科10属,其中蓝藻门和硅藻门的种类数占总种数的87.5%,蓝藻中的丝状种类所占的比例最大,对维系土表水分具有一定的现实意义和重要作用;藻类植物物种丰富度与石漠化的等级呈负相关;通过物种多样性判定研究土壤贫瘠且属酸偏碱性土壤;同等石漠化等级的样点群落相似性程度高,但处于裸露状态的无石漠化区域的土壤水土流失严重,其土壤生态环境与强度石漠化区域相似。In order to know the correlation of stony desertification degree with soil algae diversity,species richness,community in common and spatial distribution variation,the soil algae community features,flora and distribution characteristics in Huajiang karst area of Guizhou were studied.Results：there were 16 species （including one variant）,belongiug to 10 genera,9 families,7 orders of 3 divisions.Among them,Cyanophyta and Bacillariophyta occupied 87.5％ in species of research area.The filiform Cyanophyta accounted for the largest proportion and had certain practical significance and vital function in maintaining soil surface moisture; The soil algae species abundance and grade of desertification were negatively correlated; the soil was barren and slightly alkaline judged by species diversity.Species composition similarity of the same grade of stony desertification was high.But bare no rocky desertification region was of serious soil and water loss.The soil ecological environment was similar to strong rocky desertification area.

关 键 词：土壤藻类 群落结构 生态特征 喀斯特 花江 贵州 

分 类 号：X826[环境科学与工程—环境工程]