第二松花江流域1956—2006年降水量时空变化特征分析  

Temporal and spatial characteristics of precipitation over second tributary of Songhua River Basin from 1956 to 2006

作　　者：汤洁[1] 王宪泽[1] 李青山[2] 续衍雪[1] 卞建民[1] 李昭阳[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130012 [2]松辽流域水资源保护局,吉林长春130012

出　　处：《水资源保护》2011年第6期14-18,共5页Water Resources Protection

基　　金：水体污染控制与治理科技重大专项(2008ZX07207-006-01-02)

摘　　要：利用滑动平均法分析第二松花江流域降水量的变化与趋势,并分别运用Mann-Kendall秩次相关检验法和高斯权重法进行趋势性检验和空间插值。结果表明,第二松花江流域的降水量1956—2006年整体呈现小幅下降和丰枯交替现象,丰水年周期年数少于枯水年周期年数。降水主要集中在夏季,变化幅度较大;其次为春季和秋季,变化幅度较小。从年内变化看,春季和夏季降水呈平稳状态,秋季呈下降趋势,冬季几乎无变化。在空间分布上,流域内降水量呈现由东南至西北逐渐递减的趋势,白山水库和丰满水库处于高值区。The moving average method was used to study the precipitation change and trend in the second tributary of the Songhua River Basin.The Mann-Kendall rank correlation test and the Gaussian weighting method were used for trend testing and spatial interpolation,respectively.The results show that the precipitation over the second tributary of the Songhua River Basin from 1956 to 2006 had a slight downward trend in general and a characteristic of alternation in wet and dry seasons,and that the wet season period was shorter than the dry season period.Precipitation was mainly concentrated in summer,with a large amount of variation,followed by the spring and autumn,with a small amount variation.In terms of the annual variation,the precipitation remained in a stable state in spring and autumn,had a decreasing trend in autumn,and remained unchanged in winter.In terms of the spatial distribution,the precipitation over the basin had a decreasing trend from southeast to northwest.The White Mountain Reservoir and the Fengman Reservoir were the areas with high precipitation values.

关 键 词：第二松花江 降水量 滑动平均 Mann-Kendall秩次相关检验 

分 类 号：P426.614[天文地球—大气科学及气象学]