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利用精河水文站1964~2012年径流数据,采用变异系数、集中度、集中期和小波分析方法,对艾比湖流域精河的径流量在多时间尺度上进行分析。结果显示,精河径流年际变化较平稳,增长趋势不明显;精河流域径流主要集中在6~8月,季节上主要集中在夏季。径流集中期主要集中在6月下旬至7月中旬之间。应用小波分析发现精河年径流集中度变化具有明显的阶段性与周期性。径流集中度呈现15年、8年、4年、2年左右的显著周期性变化。
Based on the runoff data of Jinghe Hydrological Station from 1964 to 2012, the runoff of Jinghe in the Aibi Lake Basin was analyzed on a multi-time scale using the method of variation coefficient, concentration degree, concentration period and wavelet analysis. The results showed that the interannual variation of Jinghe River runoff was relatively stable and the growth trend was not obvious. The runoff of Jinghe River was mainly concentrated in June to August and mainly concentrated in summer. The concentration of runoff mainly concentrated in late June to mid-July. Using wavelet analysis, it is found that the concentration of annual runoff in Jinghe River has obvious stage and periodicity. The concentration of runoff shows a significant cyclical change of 15 years, 8 years, 4 years and 2 years.