Tendency and mechanism analysis of total hardness in shallow groundwater in the suburb of Beijing

As the most obvious factor leading to poor groundwater quality,total hardness is important in groundwater evaluation.Based on the monitoring data of groundwater quality,the representative wells were chosen to analyze the tendency of total hardness.The results show that there is an increasing tendency of the total hardness.According to the analysis of fundamental mechanism,a conclusion is drawn that the increase of total hardness is attributed to the unreasonable development and protection and th...