“三江并流”自然遗产地金沙江流域居民区蚊类物种多样性与多度空间分布格局及其关系

本文调查和探讨我国西南山地蚊类物种多样性与多度的空间分布格局及其关系.以滇西北“三江并流”自然遗产地金沙江流域(北纬26°00′～28°30′；东经99°00′～101°00′和海拔1 500～3 500 m之间)为调查研究的空间范围,应用灯诱法对16个乡镇居民区蚊类多样性进行调查取样、统计和分析.结果共捕获蚊类2亚科...

Relationship between the Diversity and Species Abundance Mosquito of in Residential Area along Jinsha River in the Natural Protected Territory,"Three Parallel River Region" of Yunnan Province, China

In order to probe and investigate the relationship between species diversity and temper spatial distribution pattern of mosquitoes （Culicidae） in mountainous residential area in Southwest China, an investigation on mosquito was carried out along Jinsha River in the natural protected territory, ＂Three Parallel River Region＂ of Yunnan Province. Adult mosquito samples were trapped using UV light traps at 16 sampling sites （latitude： 26°00＇-28°30＇N, altitude： 1 500-3 500 m）. A total of 63 036 mosquitoes were collected and identified as 37 species of 6 genera in 2 subfamilies. Cx. tritaeniorhynchus was dominant species. Cx. theileri, Cx. pipiensquingue fasciatus and An. sinensis were common species. Species richness and diversity index of mosquitoes along latitude and altitude gradients generally appeared highest at middle value, and lowest in lower as well as higher latitude and altitude gradients. The results showed ： 1 ） Cx. tritaeniorhynchus has very significantly positive correlation with mosquitoes density and ecological dominance, however, it was very significantly negative correlation with species diversity; 2） Mosquitoes density and species diversity had very significantly negative correlation with Pielou index E, significantly positive correlation with ecological dominance; 3 ） Cx. theileri abundance had very significantly positive correlation with species diversity, however, there was a negative correlation between ecological dominance, density and Cx. tritaeniorhynchus abundance; 4） Cx. pipiensquinguefasciatus and An. sinensis abundance had a negative correlation with Cx. tritaeniorhynchus. Otherwise, they were not relevant to species diversity （H＇, E） , ecological dominance, density and Cx. theileri abundance; 5 ） The relationship between mosquitoes density, main mosquitoes abundance and richness were not obvious. Distribution patterns of mosquitoes species diversity along latitude and altitude gradients generally appeared highest at middle value, and lowest in lower as well as higher latitude and altitude gradients, which was relevant to main mosquitoes abundance and density. In addition, C. tritaeniorhynchus leaded the changing tendency and distribution pattern of the diversity, density and ecological dominance of mosquitoes. Cx. theileri abundance influence the density, ecological dominance of mosquitoes and distribution pattern of species diversity.