摘要
利用甘肃省资料年代较长的75个地面气象站1960～2006年历年逐日沙尘暴资料,采用相关和小波分析方法,对沙尘暴变化特征进行分析。得出各季沙尘暴日数近47 a总体呈减少趋势,小波分析显现出各季沙尘暴日数都存在6 a和9 a准周期变化振荡,也分析了沙尘暴对甘肃农业生产的影响,对沙尘暴的监测预警和防御对策提出了见解。
Based on the data about sandstorm from 75 meteorological stations from 1960- 2006 in Gansu Province, using the methods of wavelet analysis and correlation, the seasonal change characteristics of sandstorm in Gansu Province was analyzed. The results show： Seasonal sandstorm days have declined in recent 47 years, and they represent the 6 - year and 9 - year periodic oscillation by the wavelet analysis. The sandstorm result in heavy economic damage to agricultural production in Gansu Provincre, especially the ＂5.5 Black Wind＂ in 1993. Therefore, the studies on sandstorm, sandstorm damage and how to control, monitor and predict sandstorm should be reinforced.
出处
《干旱地区农业研究》
CSCD
北大核心
2008年第6期212-216,共5页
Agricultural Research in the Arid Areas
基金
中国气象局气候变化专项"气候变化对祁连山区冰雪水资源的影响研究"(CCS2007-26)
中国气象局业务轨道建设项目"气象灾害风险区划-沙尘暴灾害区划"
关键词
沙尘暴
变化特征
农业生产
甘肃省
sandstorm
change characteristics
agricultural production
Gansu Province
