| 1. | With the fast increase of the population , the food demand was increased . it resulted in the cultivation of much rangeland , which led to the meadow desertification because of overload in grassland . and after population increases , for keeping their live hood people who raise domestic animals increase their livestock , which is not only the cause of the desertification , but also the general mode of desertification developing 由于人口的增加,加大了粮食的需求,从而不断的以草地为代价来扩大耕地面,草场面积的减少,单位牲畜占有草场的量不断下降,就会导致超载,引发草原退化、沙化,人口的增加也会刺激对肉类的需求,为了满足种种需求,牲畜的数量不断增加,最终导致土地沙化。 |