CAJ | 학술논문

利用烟台地区11个气象观测站的近30年（1981～2010）降水资料，采用标准化降水指数得到了烟台地区近30年的年度干旱指数和季节干旱指数，并根据干旱标准中干旱发生频率、干旱站次比和干旱强度三项指标分析了烟台地区近30 a干旱的演变特征。结果表明，近30 a来，烟台地区以轻旱为主，中旱和重旱比例持平，有干旱发生频率逐渐减少而发生强度有所增强的趋势；春旱和夏旱有增加趋势，冬旱和秋旱有减少趋势；西部和北部地区发生干旱的次数明显多于东部和中间地带地区。与灾情对比时发现，年SPI能够较好的对长期的干旱进行描述，但在年内发生短期干旱时，效果欠佳。尽管烟台地区近几年来没有重旱出现，仍需注意做好对干旱特别是重旱的预防工作。
이용연태지구11개기상관측참적근30년（1981～2010）강수자료，채용표준화강수지수득도료연태지구근30년적년도간한지수화계절간한지수，병근거간한표준중간한발생빈솔、간한참차비화간한강도삼항지표분석료연태지구근30 a간한적연변특정。결과표명，근30 a래，연태지구이경한위주，중한화중한비례지평，유간한발생빈솔축점감소이발생강도유소증강적추세；춘한화하한유증가추세，동한화추한유감소추세；서부화북부지구발생간한적차수명현다우동부화중간지대지구。여재정대비시발현，년SPI능구교호적대장기적간한진행묘술，단재년내발생단기간한시，효과흠가。진관연태지구근궤년래몰유중한출현，잉수주의주호대간한특별시중한적예방공작。
Data at 11 observatory stations in Yantai for 30-yr (1981~2010) precipitation was utilized to obtain annual drought index and seasonal drought index in Yantai district based on standardization precipitation index (SPI). The characteristics of drought events in 30-yr period in Yantai have been analyzed based on three indices of drought events: drought frequency, drought station time ratio, drought intensity. The results showed that in the 30-yr period, light drought events dominate in Yantai, middle and heavy drought events were comparable. Drought frequency was gradually decreasing and drought intensity was gradually increasing. Spring and summer drought events were increasing, whereas Autumn and Winter drought events were decreasing. In the western and northern region, the drought events were more significant than those in the eastern and middle region. Compared with real drought events, annual SPI could describe long term drought event characteristics. However, it could not describe short term seasonal drought events. Although there did not happen heavy drought events in Yantai district, it was still necessary to pay attention to the drought events, especially heavy drought events.