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Soil salinity. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. It can also come about through artificial processes such as irrigation
It most often attempts to ensure that soil does not erode and wash into streams and lakes or blow away in the wind, but it also involves the protection of the soil from damage by machinery (e.g., compaction) or by harmful changes to its chemistry (e.g., acidification or salinization).