六盘山自然保护区落叶阔叶林边缘效应的研究  

A Study of Edge Effect of Deciduous Broad-leaf Forest in Liupanshan Nature Reserve

作　　者：李云 

机构地区：[1]宁夏固原市原州区国营林业总场,宁夏固原756000

出　　处：《宁夏农林科技》2013年第7期14-17,共4页Journal of Ningxia Agriculture and Forestry Science and Technology

摘　　要：应用Shannon-Wiener物种多样性指数、Simpson生态优势度指数以及边缘效应强度指数,对宁夏六盘山自然保护区落叶阔叶林的边缘效应现象进行了研究。结果表明:落叶阔叶林与灌木交错区(A)的边缘效应强度ED是1.003 756、边缘效应强度EC是0.763 123,说明该交错区的边缘效应是正效应。落叶阔叶林与人工林交错区(B)的边缘效应强度ED是0.740 701、边缘效应强度EC是3.408 548,说明该交错区的边缘效应是负效应。The edge effect of deciduous broad-leaved forest in Liupanshan Nature Reserve of Ningxia was Bstudied by means of using Shannon-Wiener species diversity index, Simpson ecological dominance index and the strength of the edge effect in- dex. The results showed that the strength of the edge effect of the ecotone （A） of the deciduous broad-leaved forest and shrub forest Eo was 1.003 756 and Ec was 0.763 123. It meant that the edge effect of the ecotone were characterized by positive effect. The strength of the edge effect of the ecotone （B） of deciduous broad-leaved forest and man-made forest Eo was 0.740 701 and Ec was 3.408 548, it meant that the edge effect of the ecotone were characterized by negative effect.

关 键 词：物种多样性 生态优势度 边缘效应 落叶阔叶林 自然保护区 

分 类 号：S718.5[农业科学—林学]