Читать книгу Groundwater Geochemistry - Группа авторов - Страница 85

Extensive withdrawal of groundwater in the upstream side of the river may reduce the groundwater level in the coastal areas that allows the intrusion of seawater. Hence, crop cultivation is quite difficult in coastal areas due to the presence of saltwater. In order to reduce the salinity effects in coastal areas, leaching of salts has to be reduced. Hence, it is necessary to maintain a proper drainage system to lower the water table at least 1.5 m from the surface of the soil to prevent salt accumulation (Alam et al. 2017).