水资源与水工程学报2016，Vol.27Issue(2)：86-91,6.DOI:10.11705/j.issn.1672-643X.2016.02.16
宝鸡地区降水特征分析
Analysis of precipitation characteristics in Baoji region
摘要
Abstract
Based on the data of monthly precipitation from 1961 to 2013 in Baoji region, the paper used the methods such as cumulative anomaly method, modulus ratio coefficient difference plot curve analysis, trends analysis method to analyze the precipitation characteristics of Baoji region. The conclusions are that:the distribution of annual precipitation of Baoji area is uneven, and the precipitation was relatively more in 1970s and 1990s, the precipitation was relatively less in 1980s, and the precipitation has shown a significant decreasing period since the end of twentieth century. The annual precipitation shows a de-creasing trend, and the volume of decrease is mainly concentrated in spring and autumn,however, the precipitation shows an increasing trend in summer and an small increasing trend in winter. Therefore, the degree of drought in spring and autumn may be more serious ,but the degree of drought in summer will be relatively weak, and winter has basically been in a dry period all the time. The seasonal precipitation dis-tribution is also extremely uneven, and the precipitation in flood season accounts for 63. 27% of the whole year,which easily leads to form the phenomenon of extreme drought or waterlogging. The annual precipitation shows a regular pattern of alternating wet and dry. The dry period is longer than the wet peri-od,and it's easy to occur the phenomenon of unusual drought.关键词
降水量/年际降水量/季节降水量/变化特征/宝鸡地区Key words
precipitation/annual precipitation/seasonal precipitation/change characteristics/Baoji re-gion分类
天文与地球科学引用本文复制引用
徐盼盼,王海科,钱会..宝鸡地区降水特征分析[J].水资源与水工程学报,2016,27(2):86-91,6.基金项目
水利部公益性行业科研专项经费项目(201301084) （201301084）
