A study On the variation and forecasting m odels of groundwater level an d draining waterlogging in cultivated soil layersin the Jianghuai Valley
江淮流域地下水位变化规律及预报模型与耕作层排渍模型研究

The annual and interannual variances of groundwater level and the relationships among the groundwater level and the initial soil moisture,the initial groundwater level,temperature,sunshine,reference crop evapotranspiration,evaporation,precipitation in the Jianghuai Valley were analyzed.The forecasting models of groundwater level were built with step regression method,the degrees of providing water were calculated with relative analyses method and the draining waterlogging model in cultivated soil layers was built.