中国农业大学学报2012，Vol.17Issue(4)：96-102,7.
近50年北方农牧交错带气候月季变化和空间分布规律
Characteristics of climate change in seasons and months and the spatial distribution in northern farming-pastoral transition zone in recent 50 years
摘要
Abstract
This paper is concerned on the characteristics of climate change in seasons,months and in different areas of northern farming-pastoral transition zone with the general meteorological data of 33 sites from 1960 to 2010. The results showed that the annual average temperature had a clear upward trend for about 2.0 ℃ in the past 50 years. The seasonal temperatures increased by 0. 057 ℃/a for winter,0. 043 ℃/a for spring,0. 035 ℃/a for autumn and 0. 030 ℃/a for summer. In particular, the temperature in February increased largely by 4 ℃ in past 50 years, following by March and April. The annual precipitation reduced by about 40.0 mm in last 50 years. The summer precipitation change was similar to the annual precipitation trends. In fall and spring,the precipitation fluctuated annually. There was a slight increase in spring, but a decrease in autumn. The precipitation decreased drastically in July and August, but no obvious regularity in other months. It was evident that the eastern section of the north area, the western section of the middle area and the most parts of the western area all had a continuous warming-drying trend.关键词
北方农牧交错带/气候变化/降水/温度/空间分布特征Key words
northern farming-pastoral transition zone/climate change/precipitation/air temperature分类
天文与地球科学引用本文复制引用
刘亚南,潘志华,李超,安萍莉,潘学标..近50年北方农牧交错带气候月季变化和空间分布规律[J].中国农业大学学报,2012,17(4):96-102,7.基金项目
国家重大科学研究计划“973”项目 （）
国家科技支撑计划 （）
