LiaoningNormalUniversity（2011届）本科生毕业论文(设计)题目：辽宁省农业干旱时空特性分析学院：城市与环境学院专业：水文与水资源工程班级序号：4班6号学号：20071136020021学生姓名：常静指导教师：曹永强2011年5月目录摘要（关键词）.........................................................................................................................1Abstract（Keywords）..............................................................................................................11绪论..........................................................................................................................................21.1研究背景及目的............................................................................................................21.2国内外研究现状............................................................................................................21.2.1国外研究现状......................................................................................................21.2.2国内研究现状......................................................................................................31.3主要研究内容................................................................................................................31.4论文的结构框架图........................................................................................................42辽宁省农业干旱概述..............................................................................................................52.1农业干旱概述................................................................................................................52.1.1干旱的概念和分类..............................................................................................52.1.2农业干旱及干旱的影响......................................................................................52.1.3农业干旱指标......................................................................................................62.2辽宁省农业干旱概况....................................................................................................72.2.1辽宁省农业干旱的成因（以2000年和2001年为例）..................................82.2.2辽宁省农业干旱的特点......................................................................................92.2.3辽宁省农业干旱的分区....................................................................................102.2.4辽宁省农业干旱的影响....................................................................................113理论基础................................................................................................................................123.1AWTP指数.................................................................................................................123.1.2基本原理............................................................................................................123.1.2含义....................................................................................................................123.2Morlet小波分析方法..................................................................................................134应用实例................................................................................................................................144.1时间分布特征...................................
