近百年云南纵向岭谷区气温的时空变化特征

Spatiotemporal variation characteristics of air temperature in Longitudinal Ridge-gorge Region of Yunnan in recent century

采用多种统计方法,对近百年来纵向岭谷地区气温的时空变化特征进行了分析。结果表明:纵向岭谷区气温分布具有一致性,且温度、热量分布存在明显的南北差异。自然的阻隔作用使得岭谷地区的年平均、冬季平均温度呈现出西高东低,大致具有经向分布的特征;夏季平均气温表现出南北高,中间低的分布。澜沧江流域是年、冬季气温和热量发生变化的阻隔分水岭。纵向岭谷地区的气温具有明显的年代际变化特征,近百年来以增温趋势为主。

The spatiotemporal variations of the air temperature in Longitudinal Ridge-gorge Region （LRGR） of Yunnan Prorince were studied using a lot of statistical methods in this paper. The results show that the distribution of temperature is consistent. The distribution of the temperature and the quantity of heat in the south of the Longitudinal Ridge-gorge Region are different from that in the north. It is higher in the west of LRGR while lower in the east of LRGR for annual mean temperature and winter mean temperature. For summer mean temperature＇ s distribu- tion, it is higher in both south and north in LRGR while lower in the middle of LRGR. Lancang River is the barrier watershed of annual mean temperature and winter mean temperature. The variation of the temperature in LRGR is characterized by interdecadal scale. It is found that the temperature in LRGR has increased intensely in the past 100 years.