Bumblebee's Distribution Patterns And Its Relationship To The Important Environmental Factors In Sichuan Province And Chongqing City

Bumblebee belongs to arthropdoda, insecta, hymenoptera, apidae, bombinae, bombus in entomological taxonomy. There are 239 kinds of bumblebees in the world. Bumblebee spreads all over the continent besides the South Pole and Oceania, presents to temperate zone and inferior frigid zone in Northern Hemisphere normally, adapts to cold, moist climate. Probably there are more than 80 kinds of bumblebees in our country, all parts of the country are distributed, 56 kinds in Sichuan province. Bumblebee has important economic and ecological values, is still a good index of the environmental factor. It is a good research object in ecology and history evolution.Sichuan province and Chongqing lie in the southwest of our country, with a varied topography and distinct difference in climate. Special habitat condition, rich and varied ecosystem type, has established the diversified habitat foundation for species of Sichuan Province and Chongqing city. The fauna of Bumblebee in Sichuan occupies very important status in our country. In the past, though the investigation about Sichuan bumblebee's fauna has been done a lot, the geographical distribution laws of Bumblebee and the relationship to the important environmental factors is less involved. While carrying on spatial quantitative analysis, one sensible method is to analyze how the ecological environmental factors influence that bumblebee distribution. With the rapid developing of the geographical information system and statistics software in recent years, it has opened up the new way intostudying the ecologic of insect.In this paper Supported by software, such as GIS, DPS, Spss etc., With studying Sichuan province and Chongqing city, using bumblebee's space distribution database that cooperation finished by Tang Ya and P. Williams, the geographical distribution and vertical distribution of bumblebee is discussed. The main analysis methods are factor analysis and clustering analysis. The following conclusions are acquired after studying:The diversity of Bumblebee presents positive correlation with vegetation diversity and altitude, and that presents negative correlation with climate factors in Sichuan province and Chongqing city to some extent.Bumblebee's species diversity is relevant to the habitat diversity; the habitat is more complicated, the higher the abundant degree of bumblebee species in the unit.The human activity destroys the ecological environment, conduces to unfavorable environmental condition that the bumblebee survives.