江苏省陆栖濒危脊椎动物物种丰富度及分布格局  

Species Abundance and Distribution Patterns of Endangered Terrestrial Vertebrates in Jiangsu Province

作　　者：于莉[1] 田苗苗[1] 李志艺[1] 赵言文[1] 

机构地区：[1]南京农业大学资源与环境学院,江苏南京210095

出　　处：《生态与农村环境学报》2011年第4期32-39,共8页Journal of Ecology and Rural Environment

基　　金：环境保护部重点项目(wz2009-10)

摘　　要：采用实地调查与资料收集相结合的方法,以县(市)为基本地理单元建立江苏省陆栖濒危脊椎动物二元分布数据库;基于GIS技术,研究濒危动物物种丰富度格局;依据地理单元中物种组成的相似程度进行聚类分析,探讨江苏省濒危动物相似性分布格局。结果显示,江苏省陆栖濒危脊椎动物共有35科62属83种;西南部丘陵山区、盐城、连云港及启东地区濒危物种丰富度较高,江苏中部地区(主要为泰州和淮安)濒危物种丰富度较低,这与江苏省生物多样性分布热点基本一致,濒危物种丰富度与总物种丰富度之间呈极显著正相关关系(P<0.01,n=73),Pearson相关系数为0.869;依据物种组成相似性,当组间距离分别为23.8、20.6、18.8时,江苏省73个基本单元可聚为3、4、5组,该聚类结果表明江苏省陆栖濒危脊椎动物分布受自然地理亚区、地形地貌以及人为活动的共同影响。To build up a binary distribution database of endangered terrestrial vertebrates in Jiangsu Province with county as its basic geographic unit,field investigations were carried out in combination with information and data collection.To explore richness patterns of the endangered animal species in Jiangsu,GIS technology was applied;and to analyze similarity distribution patterns of the endangered animal species,cluster analysis was performed of similarity between geographic units in species composition.Results show that Jiangsu has 83 species of terrestrial vertebrates in 62 generas and 35 families,under the category of endangered;they are relatively high in richness in the hilly region of Southwest Jiangsu,Yancheng,Lianyungang and Qidong;and quite low in the centre of Jiangsu,such as Taizhou and Huaiyin,which basically accords with the distribution of biodiversity hotspots in Jiangsu,and their richness is positively related to the total species richness（P0.01,n=73）,with Pearson correlation coefficient being 0.869.Based on species composition similarity,the 73 basic units can be clustered into 3,4 and 5 groups,when the distance between the groups is 23.8,20.6 and 18.8,respectively.The cluster analysis indicates that the distribution of endangered terrestrial vertebrates is affected by the geographical sub-region,topography and human activities of their habitats.

关 键 词：濒危动物 物种丰富度 分布格局 聚类分析 江苏省 

分 类 号：X176[环境科学与工程—环境科学] Q958.2[生物学—动物学]