摘要
利用1949年以来62年的江淮丘陵区农业干旱灾害数据,从受旱面积和成灾面积、受旱率和成灾率、灾害异常指数等方面分析江淮丘陵区旱灾变化规律。结果表明:江淮丘陵区农业旱灾灾情轻重交替出现,呈现较为明显的类周期性波动,波动周期大致为5～10a。该研究结果可为江淮丘陵区抗旱减灾提供决策参考。
In this paper, the variation pattern of drought disasters is analyzed,based on the 62-year agricultural drought disaster data since 1949 in Jianghuai Hilly Region, from the drought area, disaster area, drought rate, disaster rate, devastation and a nomaly index. The results show that the severity of agricultural drought disasters alternates, and presents an obvious pattern of periodical fluctuation with the length of about 5-10a in Jianghuai Hilly Region. The study results can make the reference for decision making for drought relief and reduction in Jianghuai Hilly Region.
出处
《衡阳师范学院学报》
2013年第3期92-96,共5页
Journal of Hengyang Normal University
基金
国家自然科学基金项目(41171075
71273081)
水利部重大基建前期项目"全国干旱区划及旱灾风险评估研究"
水利部公益性行业科研专项经费项目(201001043)
中国气象局成都高原气象开放实验室基金课题(LPM2011002)资助
关键词
江淮丘陵区
农业干旱灾害
旱灾变化规律
旱灾异常指数
Jianghuai Hilly Region
agricultural drought disasters
drought variation
drought anomaly index
