吉林省西部旱涝灾害的动态变化及其驱动力分析

本文在对吉林省西部近50年的数据资料统计的基础上,研究了吉林省西部旱涝灾害的动态变化规律,并对其驱动力进行了分析。研究结果表明,吉林省旱涝灾害呈上升趋势,特别是近20年大幅度上升。吉林省西部降雨量逐渐减少,蒸发量远大于降雨量,气温逐渐升高,是旱涝灾害逐渐加重的自然驱动力。由于人口的增加和土地利用方式的改变,使得吉林省西部生态环境恶化,旱涝灾害逐渐加重。

Analysis on the Dynamic Changes of Drought and Flood Disaster and It's Driving Factors in West of Jilin

Based on 50 years data,the dynamic change law of drought and flood disaster and it's driving factors were studied in west of Jilin Province.The results showed that the trend of flood and drought disasters had been risen in 50 years,especially since 1980's.The nature driving factors were precipitation gradually lowered,air temperature gradually raised,and evaporation exceedingprecipitation.As the population growing and land use changing since 1980,the ecology environment deterioration has been more and more serious,the drought and flood disasters have been more and more aggravating in west of Jilin Province.