干旱程度度量方法研究  

Studies on drought degree measures

作　　者：董侬生[1] 苏志诚[2] 

机构地区：[1]国家防汛抗旱总指挥部办公室,北京100053 [2]中国水利水电科学研究院,北京100038

出　　处：《中国水利》2012年第19期40-43,共4页China Water Resources

基　　金：水利部公益性行业科研专项经费项目"抗旱减灾管理应用系统关键技术及示范研究"(201001041)

摘　　要：以宏观的方法分析干旱现象,论述了干旱概念的相对性定义,提出了度量干旱程度的水量供需平衡指数,阐述了构建水量供需平衡指数依据的原理,描述了水量供需平衡指数的构建方法及公式。区域水量供需平衡指数的数学模型及算法程序已在重庆市做过验证。水量供需平衡指数全面反映了干旱状态的基本特征,完整可靠。采用此指数作为干旱程度的度量指标,简单易行,对于指导全国抗旱工作有多方面的意义。Macro methods are employed for the evaluation of drought. The relativity definition of drought is discussed. The index of water balance is proposed for levering degree of drought with an explanation of principle for the formation of water balance index and description of formation method and formula. The mathematical model and calculation procedure of regional water balance index have been tested in Chongqing Municipality. It is found that the index can reflect the basic feature of drought and reliable. It is easy and applicable to use the index for measuring drought, which can he used as guidance for drought relief all over the country.

关 键 词：干旱指标 度量方法 平衡指数 鸡鸣原理 方法研究 

分 类 号：S423[农业科学—植物保护]