Читать книгу Groundwater Geochemistry - Группа авторов - Страница 73

Secondary salinity is also referred to as dryland salinity and it is a major problem in the world. It is caused by the rising of the water table due to the evaporation of water from the soil. In drylands, the water loss is reduced due to the removal of vegetation and change in land use patterns that allows accumulation of more salts into the soil and groundwater, which have adverse effects on plant growth and lead to low crop yield (Zaman et al. 2018). The other causes that induce water table rise are restricted drainage systems, excessive recharge of groundwater due to heavy rains and floods, and replacement of deep‐rooted perennial plants with shallow‐rooted annual plants.