珲春河流域径流对降水的响应关系分析

以1960-2005年珲春水文站和气象站径流、降水的监测资料为图们江下游流域的代表,首先分析珲春河流域径流和降水年际、年内变化,其次以年代和汛期、非汛期降水径流的变化为主要对象,分析两者的响应关系.结果表明:1)降水的年际变化不大,且比较稳定,降水量的年内分配来看,主要集中在5~9月,占年降水总量的80.4%;珲春站的汛期降水表现为下降趋势,非汛期的降水表现为上升趋势.2)珲春河流域近50年的径流和降水的变化规律具有一定的相似性,两者相关系数为0.76,具有很高的相关性.

Hunchun River basin runoff to precipitation's responsive relation analysis

According to the run-off and precipitation data of the hydrological station and weather station in 1960—2005,which represents the data of the downstream of the Tumen Drainage Basin.Analysised the annual change and variation in year of the Hunchun Drainage Basin,and then took the change of the run-off of the precipitation in decade、flood season and non-flood season as research object,analysised the response relationship.The results indicated：1） the annual change of the precipitation was small and steady;the annual distribution was mainly in the May~September and took the 80.4% of total precipitation;the precipitation in flood season of the Hunchun Station was decreasing,howerver the precipitation in the non-flood season was increasing.2） During the lastest 50 years,the variation of run-off and the precipitation in Hun-chun Drainage Basin had greate similarity and the correlation coefficient was 0.76.