Abstract:

In order to learn the degree of response of Xilingole Area to the global climate change, and supply a dependable basis for the exploitation and utilization of ecological resources, according to the basic meteorological data of 15 weather stations in Xilingole area from 1969 to 2009, with statistical methods such as one linear regression, linear trend analysis, correlation analysis, this article analyzed and studied climate change nearly 50 years in Xilingole area. The results showed that temperature change increased significantly with increasing rate as 0.43℃/10 a, the average temperature rised about 1.6℃ and climate growing period increased an average of 7.1 d. It had basically unanimous changing tendency with that of global, northern hemisphere and China, and the temperature in Xilingole area varied over a much wider range than the world. Seasonal average temperature had increasing trend, and the fastest increased in winter and spring, the slowest in summer and autumn. Moreover, surface wind speed decreased significantly with change rate as -0.28(m/s)/10 a. Precipitation, sunshine hours and evaporation had no significant change. The climate warming tendency was obvious nearly 50 years in Xilingole area, global warming was the main factor which effected temperature change in this area. The change tendency and rate of very few meteorological factors had regional differences.