Abstract:

In order to explore deeper reason about Dendrkctomus valens LeConte’s outbreaking, the Luliang, Zhongtiao and Taihang mountain in Shanxi province, appropriate representative sites were chosen, using rain, temperature, humidity, light and wind data from 1957 to 2005, observation data of Dendrkctomus valens LeConte, and quality data of ecological environment, the influence of climate changes on Dendrkctomus valens LeConte were analyzed by climate diagnosis. All showed that: (1) In migration, there were similar climate characteristics with its origin, which provided the most basic survival condition for Dendrkctomus valens LeConte. (2) It was the most important reason for Dendrkctomus valens LeConte’s outbreak which were appropriate climate condition caused by climate changes. (3) Quality down of ecological environment was one of important reason for Dendrkctomus valens LeConte. To contain hazardous biological invasion spreading, people should actively face and mitigate climate change, and improve ecological environment quality.