Large areas of croplands are lost year after year, due mainly to soil erosion, waterdepletion and urbanization.
大面积的农田损失年复一年,这主要是由于土壤侵蚀,水源枯竭和城市化进程。
2
Advantages claimed for no-till are that it decreases water evaporation and runoff, soil erosion and topsoil depletion.
免耕模式的优点被强调为减少水分蒸发与逃逸,减少土壤侵蚀与表面土壤衰竭。
3
Based on an assumption that the depletion of soilwater is proportional to soilwater storage, the exponential depletion relation of soilwater is obtained.