长江中游PM2.5时空演化及与能源消费总量关系研究

Spatial-Temporal Evolution of PM2.5 in the Middle Reaches of the Yangtze River and Its Relationship with Total Energy Consumption

结合美国国家航空航天局发布的全球年均PM2.5浓度栅格影像,分析了1998-2016年长江中游综合经济区年均PM2.5浓度时空演化特征,利用Sen+Mann-Kendall趋势检验分析了该区域年均PM2.5浓度变化趋势,采用灰色关联分析法计算了该区域年均PM2.5浓度值与不同类型能源消费总量之间的灰色关联度.趋势分析显示长江中游综合经济区年均PM2.5变化呈不显著上升趋势,不显著上升区域面积占比为40.16%;灰色关联分析法表明长江中游综合经济区与年均PM2.5浓度值灰色关联度最高的能源消费类型是原油.

Based on the global average annual PM2.5 concentration grid image released by National Aeronautics and Space Administration(NASA),spatial-temporal evolution characteristics of the annual average PM2.5 concentration in the middle reaches of the Yangtze River were analyzed from 1998 to 2016.Sen+Mann-Kendall was utilized to analyze the trend in the region,and the grey correlation analysis method was used to calculate the gray correlation between the annual average PM2.5 value and total energy consumption of different types.The trend analysis shows that the average annual PM2.5 change in the area does not increase significantly,the proportion of the area is 40.16%.Gray correlation analysis shows that the most relevant type of energy consumption with annual average PM2.5 concentration is crude oil.