陕西太白湑水河夏季蝶类多样性分析

Analysis of Biodiversity of Butterflies in Summer from Xushuihe River in Taibai,Shaanxi

2016年7—8月对陕西太白湑水河流域的蝶类进行了调查,分析了湑水河流域的蝶类多样性及引起该结果的原因。结果显示共采集蝴蝶190只,隶属于6科24属26种。其中,7月份以粉蝶科为优势科,优势度指数最高(0.811 3)。菜粉蝶个体数量最多(44只),其次为大翅绢粉蝶(28只)。8月份以蛱蝶科为优势科,优势度指数为0.333 3,其次为粉蝶科,优势度指数为0.297 6,个体数量以绿豹蛱蝶最多(19只)。7月份的物种多样性指数明显小于8月份,并且两个月份的H′、均匀度指数和优势度指数普遍不高。湑水河流域及其周边区域的生态环境受人为影响因素较大。

The butterflies from Xushuihe River,Taibai,Shaanxi were investigated from July to August in 2016 to analyze the biodiversity and its reason.The results showed that there were 190 butterflies belonging to 26 species,24 genera,6 families.In July,Pieridae was the dominant family,and the value of the dominant index was the highest(0.811 3).The number of the individuals of Pieris rapae was the largest(44),fol?lowed by Aporia largeteaui(28).In August,Nymphalidae was the dominant family,and the value of the dominant index was the highest(0.333 3),followed by Pieridae(0.297 6).The number of the individuals of Argynnis paphia was the largest(19).The H′value in July was significantly smaller than that in August.The values of H′,the evenness index and the dominance index of the two months were generally not high.Eco-environment in Xushuihe River and surroundings was mainly influenced by people.