作　　者： (王冰）; (舒丹丹）; (杨凡）; (段浩）;

机构地区： 河南省水利勘测设计研究有限公司

出　　处： 《水电能源科学》 2017年第8期10-13,共4页

摘　　要： 鉴于河南省干旱灾害时有发生,严重影响了其农业生产,选择能够反映农作物水分供需平衡的相对湿润度指数作为干旱评价指标,以春、初夏、伏、秋季为时间尺度评价了河南省典型年份的干旱事件,并与历史干旱记载进行对比,发现以春、初夏、伏、秋为时间尺度的相对湿润度指数在河南省具有较好的适用性。在此基础上,预测了不同气候变化情景下河南省的干旱易发区。结果表明,春和初夏季是河南省最容易发生干旱的两个季节;空间分布上,未来干旱易发区主要分布在河南省北部,在两种气候情景设置下,安阳、新乡、郑州、商丘、开封、宝丰、三门峡、许昌等地市均发生干旱事件,因此应重视以上地市的防旱抗旱工作。 The drought disasters in Henan Province occurred frequently,which seriously affected the agricultural production.This article choose the relative moisture index as evaluation index to evaluate the drought events in spring,early summer,summer and autumn in Henan Province which can balance crop water supply and demand.Compared with the historical drought records,it found that the relative moisture index is suitable well in Henan Province.The drought prone areas of Henan Province under different climate change scenarios are predicted.The results show that spring and early summer are the most drought-prone seasons in Henan Province and the drought-prone areas are mainly distributed in the northern part of Henan Province.In the two scenarios,Anyang,Xinxiang,Zhengzhou,Shangqiu,Baofeng,Sanmenxia,Kaifeng,Xuchang all occurred drought event.Therefore,those cities need to be paid attention to preventing drought.

关 键 词： 干旱 相对湿润度指数 预测 河南省