| environ. |
soil salinity Measurement of the quantity of mineral salts found in a soil. Many semi-arid and arid areas are naturally salty. By definition they are areas of substantial water deficit where evapotranspiration exceeds precipitation. Thus, whereas in humid areas there is sufficient water to percolate through the soil and to leach soluble materials from the soil and the rocks into the rivers and hence into the sea, in deserts this is not the case. Salts therefore tend to accumulate (土壤中矿物盐量的测量。许多半干旱和干旱地区是天然含盐的。根据定义，这是一些水分蒸发量超过降水量的地区。因此，即使在潮湿地区有足够的水渗入土壤，滤出土壤中的可溶解物质和石块进入河流入海，而在沙漠情况并非如此，因此盐会积累。) |
