CAJ | 학술논문

本文基于新疆喀什地区1952-2008年近57气象资料，分别运用标准化降水指数SPI、降水百分位指数PDECI以及干旱侦测指数RDIst三种干旱指标定量评价了新疆喀什地区的干旱情况，并结合研究区2000-2008年实际干旱情况进行验证分析，从而评价出较适合于研究区的干旱指标计算方法，研究结果表明：在新疆喀什地区，在三种干旱指标中， SPI和RDIst的相关性较好，在月尺度上，其相关系数高达0.9725，由于RDIst考虑蒸散发对区域干旱的影响，与喀什地区实际发生的干旱情况比较吻合，且RDIst指标具有较稳定的计算结果，整体计算结果略优于在国内运用较好的标准化降水指数SPI，而PDECI对于降水量的变化最为敏感，其月尺度和季尺度的干旱指标均不适合于喀什地区的干旱判定，研究成果可以为新疆地区的干旱评价和水资源保护提供参考价值。
본문기우신강객십지구1952-2008년근57기상자료，분별운용표준화강수지수SPI、강수백분위지수PDECI이급간한정측지수RDIst삼충간한지표정량평개료신강객십지구적간한정황，병결합연구구2000-2008년실제간한정황진행험증분석，종이평개출교괄합우연구구적간한지표계산방법，연구결과표명：재신강객십지구，재삼충간한지표중， SPI화RDIst적상관성교호，재월척도상，기상관계수고체0.9725，유우RDIst고필증산발대구역간한적영향，여객십지구실제발생적간한정황비교문합，차RDIst지표구유교은정적계산결과，정체계산결과략우우재국내운용교호적표준화강수지수SPI，이PDECI대우강수량적변화최위민감，기월척도화계척도적간한지표균불괄합우객십지구적간한판정，연구성과가이위신강지구적간한평개화수자원보호제공삼고개치。
Based on the the climate data during 1952 to 2008 in the kashar area in Xijiang province ,the stan-dardized precipitation index (SPI)、the precipitation percentile index (PDECI) and the drought detection index (RDIst) were used to evaluate the drought in the Xinjiang area ,and the actual drought in Kashar area during 2000 year to 2008 year were used to evaluate the three drought index.The outputs shows that the SPI have a good relation with RDIst,itsrelation coefficient can be 0.9725 at the month scale.Since the RDIst can take the evaporation into account,it is the most consistent with actual drought situation in Kashar area,and the index have a more stable result,it overall result is better than SPI which is used better in the country,the PDECI is the most sensitive to precipitation ,and it is not suit for drought evaluation in Kashar area in month and season scale.The outputs can take reference to drought evaluation and water resources protection in Xinjiang area.