What environmental factor can lead to salt accumulation in soil?

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Low rainfall is a significant environmental factor that can lead to salt accumulation in soil because it limits the leaching process. In regions with low precipitation, there is less water available to dissolve and transport salts away from the root zone, resulting in higher concentrations of salts in the soil. When water evaporates from the soil surface, it can also leave behind dissolved salts, which contribute to the salinity of the soil.

In contrast, higher rainfall or proper irrigation practices facilitate the movement of water through the soil profile, effectively washing away excess salts. Therefore, when rainfall is limited, the salts are not adequately leached away, leading to accumulation over time. Understanding these dynamics is essential for managing soil health and agricultural practices.

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