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基于安徽省五道沟水文水资源实验站监测数据,采用小波分析、记忆能力分析法、时间序列分析法和经典统计学方法分析了1997~2005年不同地下水埋深下的土壤湿度。结果表明,研究区土壤湿度的季节变化显著,有两干两湿期;年际变化各层基本一致,有3~5年和1.5~2.5年的时间周期规律;土壤湿度变化除受上边界条件影响外,受下边界条件潜水埋深影响也显著,深层土壤湿度与潜水埋深一直保持显著的非线性幂函数负相关关系。
Based on the monitoring data of Wudaogou Hydrology and Water Resources Experimental Station in Anhui Province, the soil moisture under different groundwater depths from 1997 to 2005 was analyzed by wavelet analysis, memory ability analysis, time series analysis and classical statistical methods. The results showed that the seasonal variation of soil moisture in the study area was significant, with two dry periods and two wet periods. The interannual variations were basically the same, with 3-5 years and 1.5-2.5 years time-period regularity. The soil moisture changes except the upper boundary conditions The impact of submerged depth of buried depth under the lower boundary conditions is also significant. The deep soil moisture has a significant negative linear relationship with the buried depth of submergence.