摘要
通过整理1960—2015年汶川县的降水资料,研究了该地区56年来降水量变化与ENSO事件对旱涝灾害的影响。结果表明,1960—2015年汶川县的年均降水量为719.7mm,年际变化较大,总体上略呈增加态势。56年间的降水量增加率为0.014 mm/10年。ENSO事件是导致旱涝灾害的一大诱因。ENSO事件出现的当年或者次年大都发生了旱涝灾害,灾害频次增多。今后应加强汶川地区的气象监测和预防工作,以减少旱涝灾害对社会经济发展可能造成的损失。
Through sorting the precipi- tation data of Wenchuan County in 1960-2015, the effects of precipitation change and ENSO events on drought and flood disasters in the region in the past 56 years were studied. The results showed that the average annual precipi- tation was 719.7 mm in 1960-2015, the interannual variability of precipitation was large, the precipitation was slightly increased in general. Increased rate of precipitation was 0,014 mm/10a in the past 56 years. ENSO event was a major cause of drought and flood disasters. In the year or next year of ENSO events almost occurred the drought and flood dis- asters. In the future, we should strength- en the meteorological monitoring and prevention work in Wenchuan County, in order to reduce the losses caused by meteorological disasters to social and e- conomic development.
出处
《农业灾害研究》
2017年第1期10-12,16,共4页
Journal of Agricultural Catastrophology
基金
四川省教育厅项目"岷江上游旱涝灾害原因及治理探析"(16ZB0386)
