Abstract: Based on the meteorological data of annual mean temperature and precipitation of 30 meteorological stations in Heilongjiang province in recent 30 years(from 1980 to 2009)，this paper analyzed the temporal and spatial variations of annual mean temperature and precipitation in Heilongjiang province by using linear trend estimation and the accumulative anomaly methods, so as to reveal the climate change characteristics of Heilongjiang province. The results showed that: (1) the annual mean temperature in Heilongjiang in recent 30 years had a significant increasing tendency with seasonal and monthly diversity; the fastest warming season was winter, and the fastest warming month was January; the climate trend rate was 0.86℃/10y; (2) the annual precipitation are decreasing; its climate trend rate was-23mm/10y, and there were different climate trend in different ages and different seasons (the largest in the 90’s, the decreasing trend of annual precipitation was significant in summer and autumn, however in spring and winter, the annual precipitation showed a slight increasing trend); (3) the climate trends of annual mean temperature and precipitation were different in different regions; the increasing trend of annual average temperature was 〖JP2〗faster in south than in north; the percentage of precipitation decreasing was larger in the south of Songnen plain and the north of Sanjing plain.

Key words:  Climate change, Climate trend rate, Accumulative anomaly, Heilongjiang province