我国北方沙尘暴活动对全球变暖的响应  

The response of sandstorm activities to global warming in northern areas of China

作　　者：马琪[1] 延军平[1] 杜继稳[2] 

机构地区：[1]陕西师范大学旅游与环境学院,西安710062 [2]陕西省气象局,西安710014

出　　处：《干旱区资源与环境》2011年第7期100-105,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(40871052)资助

摘　　要：北方沙尘暴与全球变暖的关系已成为研究的热点。文中利用1961～2006年中国北方沙尘暴多发区,包括西北地区的(内蒙古自治区,新疆自治区,宁夏自治区,青海,甘肃)和华北地区(河北)的71个站点,近46年的年均温统计资料,以及6个省区沙尘暴年平均天数,采用相关分析,线性分析,5年滑动平均,滑动t检验法等方法,分析了近46年我国北方6省区沙尘暴在全球变暖环境下的分布特征。结果表明:近46年来北方地区沙尘暴平均天数随气温的升高而递减,沙尘暴与年均温变化趋势具有线性一致性,二者呈现明显的负相关,相关系数达到-0.74;在1984年前后,6省区沙尘暴的平均天数,随气温升高,而明显减少,验证了各省区沙尘暴突变点分别为甘肃1983年,内蒙古1984年,宁夏1983年,青海1986年,新疆1984年,河北1981年;在2000年北方地区的沙尘暴出现频率有所增多,多于90年代均值,但绝大部分地区仍明显少于近46年来的平均值。The relationship between sandstorm and global warming has become a hot research.We analyzed the relation of sandstorm with global warming according to the data of average annual days of sandstorm and temperature during 1961-2006 in the areas of Northern China,including northwest（using the Inner Mongolia Autonomous Region,Xinjiang,Ningxia,Qinghai,Gansu） and Hebei Province,using correlation analysis,linear analysis,5-year moving average,moving t-test technique,and other methods.The results showed that over the past 46 years,the average days of sandstorm decreased significantly with the increasing of the average temperature in the Northern China,the coefficients between sandstorm and annual average temperature is-0.71.From 1984,the average number of days of sandstorm decreased obviously in most parts of northern China.And it verified the mutations of sandstorms in each province,such as,Gansu was in 1983,Inner Mongolia was in 1984,Ningxia was in 1983,Qinghai was in 1986,Xinjiang was in 1984,Hebei was in 1981.Although in the year of 2000,the frequency of sandstorm increased abnormally with the temperature,however,it was still less than the average days during the past 46 years in most part of regions.

关 键 词：沙尘暴 气温 相关关系 中国北方 

分 类 号：P445.4[天文地球—大气科学及气象学]