CAJ | 학술논문

本研究旨在运用历史文献资料和降水资料恢复重建陕西省各气象站1470—2008年旱涝等级，分析其变化的基本特征及其演变趋势，为将来的旱涝预测提供依据。选取榆林、延安、西安、汉中、安康5个有代表性的站点，分析这5个站1470—2008年长达539年的旱涝等级序列发现：榆林和延安有由旱向正常发展的趋势；宝鸡和西安旱涝交替阶段性变化显著，存在偏旱向偏涝转变的趋势；而陕南的汉中和安康539年来主要以偏涝为主。17世纪40年代前后陕北、关中和陕南先后出现了旱涝突变点，其中，陕北1640年前后有由偏旱转为正常的突变；1643年前后宝鸡和西安发生偏旱转为偏涝的突变；而汉中和安康在1648年前后发生了正常向偏涝的突变。对陕西5个站点539年的旱涝级别的时间序列进行EOF分解，前三模态方差贡献达91％，反映了陕西全省旱涝时空分布的主要特征；第一模态方差贡献为60．3％，这539年陕西全省旱涝一致型占主导地位；第二模态方差贡献为19．8％，即南北旱涝相反型；第三模态方差贡献较小，为10．9％。
본연구지재운용역사문헌자료화강수자료회복중건합서성각기상참1470—2008년한로등급，분석기변화적기본특정급기연변추세，위장래적한로예측제공의거。선취유림、연안、서안、한중、안강5개유대표성적참점，분석저5개참1470—2008년장체539년적한로등급서렬발현：유림화연안유유한향정상발전적추세；보계화서안한로교체계단성변화현저，존재편한향편로전변적추세；이협남적한중화안강539년래주요이편로위주。17세기40년대전후협북、관중화협남선후출현료한로돌변점，기중，협북1640년전후유유편한전위정상적돌변；1643년전후보계화서안발생편한전위편로적돌변；이한중화안강재1648년전후발생료정상향편로적돌변。대협서5개참점539년적한로급별적시간서렬진행EOF분해，전삼모태방차공헌체91％，반영료협서전성한로시공분포적주요특정；제일모태방차공헌위60．3％，저539년협서전성한로일치형점주도지위；제이모태방차공헌위19．8％，즉남북한로상반형；제삼모태방차공헌교소，위10．9％。
This article rebuilds the drought and floods grade of Shaanxi province’s stations from 1470 to 2008 ,by using the historical documents and precipitation data .It analysis the basic features and evolution trend ,and provides ba-sis for forecast of drought and floods .There are five typical stations picked up that are Yulin ,Yan’ an ,Xi’ an , Hanzhong ,Ankang .By analyzing 539 years drought and floods grade of five stations from 1470 to 2008 ,Yulin and Yan’ an have the trend which is from drought to normal .Baoji and Xi’an has significant alternating of droughts and floods and the trend which is from drought to floods .The trend of Hanzhong and Ankang is mainly floods .The change points of drought and floods came out in southern , northern Shaanxi and Guanzhong in about 1640s . The change of southern Shaanxi is from drought to normal in about 1640 .The change of Baoji and Xi’an is from drought to floods in about 1648 . The change of Hanzhong and Ankang is from normal to floods .The time sequences of 539 years’ drought and flood in 5 Shaanxi stations are decomposed by EOX .The first three EOF modes make a contribution accounting for 91% of the total variance .The first EOF makes a contribution accounting for 60 .3% .The concordant form takes the leading position of all these years .The second EOF contributes 19 .8% ,it is the opposite type of drought and flood between south and north .The third EOF contributes 10 .9% .