贾亦真;

• 1:中国矿业大学应用技术学院

摘要(Abstract)：

通过对近631个大气降水量和平均气温数据的分析发现,河南省栾川县近50 a来年降水量呈下降趋势,20世纪60年代降水量偏高,90年代降水量偏低,而年平均气温整体呈现上升趋势,与近20 a全球变暖的规律一致。另外,研究区大气降水氧同位素值和日降水量及日平均气温呈现负相关的关系,结合栾川县近50 a器测资料与相邻地区洞穴石笋δ(18O)记录的对比分析表明,亚洲季风系统在20世纪60年代中期和70年代中期发生的两次减弱事件在栾川县降水量和石笋δ(18O)记录中都有响应,由此说明该地区大气降水的氧同位素组成固然有降水量效应,但大气环流效应更为显著。

关键词(KeyWords)： 降水;全球变化;氧同位素;河南栾川

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40902053);; 教育部博士点科学基金项目(20090182120005)

作者(Author): 贾亦真;

Email:

DOI:

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