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投稿时间：2005-01-26 修订日期：2005-11-07
投稿时间：2005-01-26 修订日期：2005-11-07
中文摘要: 对浙江省气候业务中经常使用的距平百分率指标、Z指数指标、干燥度指标三种干旱指标进行比较分析，认为Z指数指标能较确切反映出干旱程度，距平百分率指标反映干旱程度较轻，干燥度指标反映干旱程度过于敏感。在此基础上，基于Z指数指标建立了浙江省干旱监测评价的强度指数、面积指数，对浙江省自1952年以来的干旱进行了逐年分析，发现浙江省夏秋连旱几率较高，干旱具有阶段性特征，1990年以来发生干旱频率有增多趋势，且旱情也加重，其中秋旱更为明显。
中文关键词: 干旱指标，Z指数，干旱强度指数，干旱面积指数
Abstract:Three kinds of drought indexes are introduced and assessed, these indexes are all able to be used for abnormal dryness calculating and drought monitoring. But to the actual, the anomalous precipitation index reflect more lighter, and the dryness degree index reflects too sensitive, Z index can be more accurate to reflect the drought disaster. So a drought intensity index and a drought area index are developed based on the Z index, and these two indexes are used to analyze the dryness year by year from 1952 to 2004 in Zhejiang Province. It indicates that there is a increases of drought frequency since 1990′s in Zhejiang Province, the drought is heavier also, and drought in autumn occurred more frequently especially. 2003 is the second severe drought year after 1967 since 1950′s.
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引用文本：
樊高峰,苗长明,毛裕定,2006.干旱指标及其在浙江省干旱监测分析中的应用[J].气象,32(2):70-74.
,2006.Application of Drought Indexes to Dryness Assessment in Zhejiang Province[J].Meteor Mon,32(2):70-74.
樊高峰,苗长明,毛裕定,2006.干旱指标及其在浙江省干旱监测分析中的应用[J].气象,32(2):70-74.
,2006.Application of Drought Indexes to Dryness Assessment in Zhejiang Province[J].Meteor Mon,32(2):70-74.