1951-2006年丹东地区旱涝特征初步分析  

An Initial Analysis of the Characteristics of Droughts and Floods for Dandong during the Period from 1951 to 2006

作　　者：崔磊[1] 迟道才[1] 赵宏兴[2] 

机构地区：[1]沈阳农业大学水利学院,沈阳110161 [2]辽宁省水利水电勘测设计研究院,沈阳110003

出　　处：《中国农村水利水电》2009年第7期58-60,共3页China Rural Water and Hydropower

基　　金：水利部"948"科技创新项目(CT200516);辽宁省教育厅科技公关项目(05L385)

摘　　要：通过对丹东地区4个雨量站1951-2006年降水资料的统计和分析,探讨了丹东地区降水的时空分布特征及其变化趋势。在此基础上,分别运用降水距平百分率、Z指数和降水温度均一化指标3种方法对丹东地区的旱涝特征进行了初步分析。结果表明:丹东地区的多年平均降雨量为1006.8 mm,雨量充沛,但降水年际、年内变化均较大,分配不均匀。运用三种旱涝指标对丹东地区的旱涝特征进行分析,结果可以看出,尽管三种指标的计算结果均能体现出丹东地区的旱涝等级的变化趋势,但Z指标法的计算结果更为接近实际情况。Through a statistic calculation and analysis of the data from 4 rainfall gauge stations in Dandong from 1951 to 2006 , the spatiotemporal distribution characteristics of the precipitation in Dandong and its trend are analyzed. On this basis, the anomalous percentages of precipitation, Z index, homogenization of precipitation and temperature are used to analyze the characteristics of droughts and floods for Dandong. The result shows that the average annual precipitation of Dandong is 1 006.8 mm, the precipitation is abundant, but it varies asymmetrically inside the year and between the years, its distribution is uneven. By using the three types of indicators on the characteristics of drought and flood analysis for Dandong, the results can be seen, although the results of the three indicators can reflect the changes in the level of droughts and floods for Dandong, but the calculation results by Z index is more closer to the actual situation.

关 键 词：丹东市 降水 旱涝特征 

分 类 号：P333.1[天文地球—水文科学]