摘要
为了监测评估湖北省干旱情况,计算了近40年降水距平百分率、标准化降水指数、综合气象干旱指数、Palmer干旱指数,比较了各种干旱指数在湖北省的适用性,并分析了湖北省干旱时空分布规律。发现大部分地区在20世纪80年代后干旱发生频率明显上升,且干旱频率上升较快区域正好是以"旱包子"著称的鄂北岗地,在未来气候背景下,将呈现"旱包子"更旱的趋势。因此,随着全球气候变暖形势日益严峻,应加强对湖北省气象干旱的监测、预报以及防范。
In order to monitor the drought conditions in Hubei province, four kinds of drought indexes-precipitation anomaly percentage, standard precipitation index, composite index and palmer drought severity index in nearly 40 years were measured, and the applicability of these drought indexes to Hubei Province was compared. Drought spatial and temporal distribution were analyzed. Results showed that the frequency of drought occurrence had apparently increased since 1980 in most areas in Hubei province. The fast increasing area was Ebei area, where drought disaster occurred frequently with a vivid name ＂drought stuff-steam bun＂. It is indicated that ＂drought stuff-steam bun＂ tendency would appear early in the future climate background. Therefore, with the growing of global warming, the monitoring, forecasting and precaution on meteorological drought in Hubei province should be enhanced.
出处
《湖北农业科学》
北大核心
2014年第4期788-794,817,共8页
Hubei Agricultural Sciences
基金
湖北省气象局重点科技项目(2013Z01)
关键词
气象干旱
适用性
时空分布规律
湖北省
meteorological drought
applicability
spatial and temporal distribution
Hubei province
