中文摘要：

城市水文要素复杂性研究是一个较新的研究方向。尝试应用Hilbert谱熵法对哈尔滨市区降水序列复杂性进行测度分析,并采用不同最大幅值随机噪声干扰法对Hilbert谱熵法测度结果稳定性进行误差分析。结果表明：1977-2011年该地区逐月降水序列复杂性随时间推移有一些波动,同时具有明显的增强趋势,而人类在该地区的活动是其降水序列复杂性渐强特征的重要驱动因子。同时也验证了运用Hilbert谱熵法的测度结果是稳定可靠的。研究成果揭示了哈尔滨市区降水序列复杂性时间差异及演化规律,同时为区域水文要素复杂性研究提供了一种新的研究模式。

英文摘要：

The urban hydrological element complexity is a new research field.This paper is an attempt to use Hilbert spectrum entropy to calculate and analyze the complexity of Harbin urban district precipitation series.And the stability of Hilbert spectrum entropy is tested with different amplitude random noise.It turned out that the complexity of the rainfall series of 1977-2011 years in this area had some fluctuation and an obvious increasing trend.And the result that has been measured by Hilbert spectrum entropy method is stable and reliable.A further analysis shows that the human urbanization activity in this area is a major driving factor of local rainfall series complexity changes.It also serves as a new research model of hydrological complexity.