摘要
利用松花江哈尔滨水文站1961—2008年降水量观测资料,采用一元线性回归和累积距平分析法,分析了松花江哈尔滨水文站月降水量的季节性变化特征。结果表明:松花江流域夏季和秋季降水量随时间变化呈递减趋势,而春季和冬季降水量则呈递增趋势;春季降水变化趋势和冬季基本相似,变化幅度较小,而夏季降水变化与秋季降水、年平均降水波动均较大。
The seasonal variation characteristic of monthly precipitation for Harbin Hydrological Station in Songhua River is analyzed using the precipitation observation data from 1961 to 2008 based on the linear regression analysis method and cumulative anomalies method. The results show that the precipitation in summer and autumn presents decreasing tendency as the time change in the Songhua River basin, however, the precipitation in spring and autumn is an opposite tendency. The precipitation change trend in spring is similar to that in winter, which has a less change. And the summer precipitation, the autumn precipitation and the average annual precipitation all show a big fluctuation.
出处
《黑龙江水利科技》
2012年第10期5-8,共4页
Heilongjiang Hydraulic Science and Technology
关键词
松花江流域
降水
趋势分析
一元线型回归法
累积距平法
变化较小
Songhua river basin
precipitation
tendency analysis
one-dimension linear regression method
small variation
