topsoil erosion 中文意思是什麼
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If the topsoil is taken away by erosion, plants can no longer grow in the soil left behind.
如果因水土流失而沖掉了表土，植物不能再在留下的土壤中生長。 -
In the absence of successful efforts to stem the loss of topsoil, the social effects of erosion will probably first be seen in africa.
在控製表土流失的努力缺乏成效的情況下，土壤侵蝕的社會影響將可能首先出現在非洲。 -
If the vegetation is damaged on account of the mining or construction, measures must be taken to rehabilitate the topsoil and vegetation, thereby preventing soil erosion
因采礦和建設使植被受到破壞的，必須採取措施恢復表土層和植被，防止水土流失。 -
Loss of topsoil by erosion and a reduction in soil fertility by not replacing nutrients, turn a renewable resource into a non - renewable one
侵蝕造成的表土流失以及不補充養分造成的土壤肥力下降使一種可再生資源變成不可再生的資源。 -
Experiments of artificial rainfall showed that sediment is the main body of total nutrient loss and runoff is the main body of available nutrient loss when erosion is slight, but sediment become the main body of total and available nutrient synchronously while erosion is intense. concentration of nutrient in runoff is most likely to be affected by concentration in topsoil. the higher concentration in topsoil is, the more possible nutrient loss by runoff is
人工降雨實驗結果表明，在降雨強度和侵蝕強度不大時，侵蝕泥沙是全量養分流失的主體，地表徑流則是速效養分流失的主體；而當在降雨強度和侵蝕強度極為劇烈時，侵蝕泥沙成為全量養分和速效養分二者流失的主要載體；地表徑流中的養分含量很大程度上受土壤中養分含量的影響，土壤中養分含量越高，養分徑流流失的可能性越大。
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