谈到水土流失,人们往往联想到大片土地被水冲失。不错,这是水土流失,但并不止于此。它们的广义的理解包括着土壤和水分两个方面。土壤除随水流失外,还可以被风吹失,亦即通常所说的“土壤侵蚀”。而水分的流失则是说降到地面上的水不全部渗入土壤或者不含蓄在土壤里,而大部分沿着地面流失。 When it comes to soil erosion, people often think of large areas of land being washed away by water. Yes, this is soil erosion, but it does not stop there. Their broad understanding includes both soil and moisture. In addition to the loss of water with the water, the soil can also be lost by the wind, which is commonly referred to as “soil erosion.” The loss of water means that water that has fallen to the ground does not completely penetrate the soil or is not contained in the soil, but most of it is lost along the ground.