关键词: 遵义, 气候变化, 气温, 降水量, 日照时数

Abstract: Climate change is a objective reality,but varies in different regions. By using climate variability,trend coefficient and accumulative anomaly method,temperature,precipitation and sunshine-based characteristics and tendency of climate change in Zunyi City dating from 1961 to 2008 were measured. The results showed that the temperature had an increasing tendency in the recent 48 years with seasonal and regional diversity,mainly in February and November (P<0.05). But in July and August,the temperature had an obvious decreasing tendency (P<0.05),and in other months,there was no obvious change (P>0.05). The temperature in urban areas,Meitan and Wuchuan had an increasing tendency,but that in Chishui and Yuqing had a decreasing tendency. Increasing temperature in winter and decreasing temperature in summer resulted in a year-by-year drop trend of the annual mean temperature in the whole region. There was no obvious precipitation change tendency (P>0.05),but there was a marked decrease tendency of sunshine duration (P<0.05)in the whole region,especially in summer. The changing environment around the meteorological observing station and human activities also influenced the change of temperature and sunshine duration.

Key words: Zunyi, Zunyi, Climate change, Temperature, Precipitation, Sunshine duration