中国西南易旱地区识别的探讨  

Identification of drought-prone areas in southwest China

作　　者：张家发[1] 唐文坚[1,2] 李少龙[1] 

机构地区：[1]长江科学院水利部岩土力学与工程重点实验室,武汉430010 [2]河海大学水文水资源学院,南京210098

出　　处：《中国水利》2012年第5期18-21,39,共5页China Water Resources

基　　金：中央级公益性科研院所基本科研业务费资助(CKSF2011019/YT)

摘　　要：利用中国西南地区13个气象站56年以上的长系列月降雨量资料,统计分析了降雨的多年变化、季节变化特征,以及连续少雨时间段事件,探讨了易旱区识别的定性定量分析方法,初步建立了气象易旱区识别指标及标准,将5个地区识别为易旱地区,5个地区识别为较易旱地区,3个地区识别为不易旱地区,将6个地区识别为易发长时间干旱地区,并对识别方法进行了讨论,为进一步的易旱区综合识别研究提出了建议。Based on monthly rainfall data of long series over 56 years from 13 weather stations in the southwest China, annual and seasonal rainfall variation characteristics, events of periods with little rainfall were statistically analyzed. Qualitative and quantitative methods are employed to identify drought-prone areas, and index and standard system have been established. According to the proposed method, it was found that among the thirteen research areas five are most prone to drought, five areas more prone to drought, three areas less prone to drought and six areas prone to long-term drought. The proposed recognition method was discussed and the suggestions for further research of comprehensive recognition were given.

关 键 词：湿润气候区 干旱 降雨量 事件 统计 

分 类 号：P426.616[天文地球—大气科学及气象学]