Bee Population

    The number of wild bees declined dramatically , and colonies on farms have been declining.the term "colony collapse disorder" to describe the abnormal phenomenon of large colony declines. Reasons for the decline include urbanisation of the countryside, pesticides, pests and a decline in bee farms. 

     As bee plays an irreplaceable role in the pollination of plants and crops, it is of great significance to research on the population of the bee and analyze the human activity influence on the  population of the bee.

   In natural condition, the bee population curve in one year is: 

 However, if we start to use insecticides，the curve changes to：

If we continue to damage the habitat of the honeybee, the curve will be like:

 

 To sum up, human activity has a big impact on the population of bee. Which may explain the phenomenon of Colony Collapse Disorder.

However, as bee is as vital importance to the nature pollination, attention should be raised that it is our duty to protect natural environment and to protect the bee.