第 ３７ 卷第 ６ 期 ２０１７ 年 ３ 月 生 态 学 报 ＡＣＴＡ ＥＣＯＬＯＧＩＣＡ ＳＩＮＩＣＡ Ｖｏｌ．３７，Ｎｏ．６ Ｍａｒ．，２０１７ ｈｔｔｐ： ／ ／ ｗｗｗ．ｅｃｏｌｏｇｉｃａ．ｃｎ 基金项目：国家 ９７３ 资助项目(２０１２ＣＢ９５５９０４) ；国家" 十二五" 科技支撑计划资助项目( ２０１２ＢＡＤ０９Ｂ０１，２０１３ＢＡＤ１１Ｂ０３) ；国家自然科学基金资 助项目(４１４０１５１０) 收稿日期：２０１５• １１• １０； 网络出版日期：２０１６• ０８• ０２ * 通讯作者 Ｃｏｒｒｅｓｐｏｎｄｉｎｇ ａｕｔｈｏｒ．Ｅ•ｍａｉｌ： ｊｕｈｕｉ＠ ｃａａｓ．ｃｎ ＤＯＩ： １０．５８４６ ／ ｓｔｘｂ２０１５１１１０２２７４ 李翔翔，居辉，刘勤，李迎春，秦晓晨．基于 ＳＰＥＩ•ＰＭ 指数的黄淮海平原干旱特征分析．生态学报，２０１７，３７(６) ：２０５４• ２０６６． Ｌｉ Ｘ Ｘ， Ｊｕ Ｈ， Ｌｉｕ Ｑ， Ｌｉ Ｙ Ｃ， Ｑｉｎ Ｘ Ｃ．Ａｎａｌｙｓｉｓ ｏｆ ｄｒｏｕｇｈｔ ｃｈａｒａｃｔｅｒｓ ｂａｓｅｄ ｏｎ ｔｈｅ ＳＰＥＩ•ＰＭ ｉｎｄｅｘ ｉｎ Ｈｕａｎｇ•Ｈｕａｉ•Ｈａｉ Ｐｌａｉｎ．Ａｃｔａ Ｅｃｏｌｏｇｉｃａ Ｓｉｎｉｃａ，２０１７， ３７(６) ：２０５４• ２０６６．

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With the purpose of probing the drought characteristic in growth stages and its possible climate factors of winter wheat in Huang鄄Huai鄄Hai plain (3H plain) under climate change,based on meteorology data of 5 selected meteorological stations from 1981 to 2010, relative moist index has been calculated to investigate the temporal variability of drought characteristic in five growth stages of winter wheat in 3H Plain in recent 30 years.The results indicated that on the temporal variation, an increasing drought trend was detected in sowing to seeding stage in southern of 3H plain while a contrary trend