黑龙江省沙尘天气发生规律及环境因子分析

通过对黑龙江省近50年来沙尘天气的观测资料分析认为,黑龙江省沙尘天气的发生地域分布广泛,区域间差异明显;沙尘天气的发生次数随年代变化有所减少,但沙尘强度有所增加,这与全国沙尘天气的变化趋势相一致。沙尘天气主要发生在春季和冬季。影响沙尘天气的环境因素较多,其中最关键的是大风和人为因素。分析认为,自然因子的周期变化是造成沙尘天气分布和变化的主要原因,人为因素起了加强作用。现阶段黑龙江省沙尘天气处于少发期,多发期还会到来。

Analysis of Occurrence of Sand- Dust Weather and Environmental Factors in Heilongjiang Province

By studying the data of sand-Dust weather of Heilongjiang in the last fifty years, the distribution of the sand-Dust weather is widespread, but the area's distinction is great. The occurring times of the sand-Dust weather has been decreasing with years. The intensity of the sand-Dust weather has increased. The sand-Dust weather occurred frequently in both Spring and Autumn. The crisis factor is heavy wind and artificial factor among these that affect the sand-Dust weather. According to this article, the cyclical change of the natural factors is the main factor to the Sand-Dust weather, while artificial factors make strengthen action. The sand-Dust weather is being in low period now. However frequently period will be coming in the future.