Abstract: To reveal the impact of Heat Island Effect and relocation on temperature sequence at Dong'e meteorological observation station,the variation trend of temperature sequence was analyzed by linear tendency estimator method and cumulative departure method,the abrupt change of annual average temperature was tested by using the method of Mann-Kendall,based on the data(1960-2009) of annual average temperature,annual average maximum temperature and annual average minimum temperature at Dong'e meteorological observation station and three other stations nearby.The result showed that the annual average temperature of all stations increased during 1960 to 2007.But the linear regression coefficient of Dong'e,0.032,was greater than that of reference observation,0.010.The accumulation departure analysis showed that the average temperature of Dong'e has been increased significantly since 1986,as other stations increased significantly since 1994.The increasing rate of temperature was 0.25℃/10y during 1970 to 2007,partly because of the impact of Heat Island Effect.The abrupt change point of Dong'e was at 1988,as other stations were at 1993.Heat Island Effect disappeared because of station location changed in 2008.As a result,Urban Heat Island effect should be taken into consideration when used temperature data of Dong'e.Urban Heat Island Effect could be modified by using the equation y=0.0254x-0.0217.

Key words: Detection environment, Detection environment, Urban heat island effect, Air temperature, Abrupt change