摘要
通过对西北地区明清时期史料的系统查阅,收集到1500—1910年西北地区沙尘天气记录年份137个,最终确定沙尘天气最终数量为250次。分析发现,1500—1910年西北地区的沙尘天气呈波动之势,其中17、19世纪沙尘天气频发态势明显;季节以春季为多;空间分布以甘肃河西走廊、陇东、宁夏北部和南部、陕北、关中一带沙尘记载较多,其中以甘肃民勤为最;沙尘天气与气温的反相关明显,与气候干湿变化的关系在河西地区需要进一步研究,在陕西地区有较为明显的相关性。
Through overall reviewing the historical records of the Ming and Qing dynasties,137 years of dust weathers recorded from 1500 to 1910 in Northwest China are collected and finally 250 dust weather events are identified.Through analyzing those records,it is found that the occurrence of dust weathers fluctuates with time.It occurs frequently in the 17th and 19th centuries.The dust weather mainly occurs in spring in terms of season.Hexi Corridor,Longdong region of Gansu,north and south parts of Ningxia,Guanzhong Plain region and Shanbei region of Shanxi are the main regions that dust weather events often happen,with the most occurring in Mingqin region of Gansu.The occurrence of dust weather negatively correlates with temperature,however,its relationship with humidity needs to be further studied.
出处
《气象与减灾研究》
2012年第3期51-56,共6页
Meteorology and Disaster Reduction Research
基金
国家社会科学基金项目(编号:08BZS050)
