灾害学Issue(1)：120-127,8.DOI:10.3969/j.issn.1000-811X.2016.01.023
1960－2012年宁夏强干旱时空格局及影响因素分析
Spatial and Temporal Pattern of Strong Drought and Its Influence Factors in Ningxia from 1960 -2012
摘要
Abstract
Based on data of monthly rainfall and temperature of 19 weather stations in Ningxia from 1960 to 2012,we use the SPEI to detect the drought trend.Spatial and temporal pattern of strong drought and the influ-enced factors in Ningxia and its 4 climate zone are analyzed and the following conclusions are got:the climate tend-ency rate of SPEI-12 was less than 0.It showed that drought trend were obvious in Ningxia and its 4 climate zone from 1960 -2012.The drought trend in arid zones was more obvious than semi-arid climate zone which was more obvious than in semi humid climate zone.The strong drought years confirmed by intensity indicators had a good cor-respondence with strong drought events noted by Ningxia Disaster Bulletin and Ningxia Water Resources Bulletin. Strong drought area was from regional scale to the scale of province from 1980s.Warming and drying climate was the main reason for the increased strong drought.Strong drought events were mainly influenced by temperature in-creased in ⅡC and ⅡB Zone,ⅠB zone was influenced by temperature rising and precipitation decrease,ⅠA was mainly affected by precipitation reduction.The corresponding relationship between ENSO and strong drought was well,effect of EL Nino events was over effect of LA Nina events,ⅡB and ⅡC zone was no significantly influ-enced by ENSO events,EL Nino and LA Nina events occurred alternately had important influence on strong drought events.关键词
宁夏/干旱强度/时空格局/SPEI/影响因素Key words
Ningxia/drought intensity/spatial and temporal pattern/SPEI/influenced factors分类
资源环境引用本文复制引用
张耀宗,张勃,刘艳艳,张多勇,周丹..1960－2012年宁夏强干旱时空格局及影响因素分析[J].灾害学,2016,(1):120-127,8.基金项目
高校博士学科点专项科研基金项目（20136203110002）；国家自然科学基金资助项目（31460090）；生态经济学省级重点学科（5002－021）；国家社科基金一般项目（13BZS084）；陇东学院青年科技创新项目 （）
