And cropland is often the loser .

受损的往往是农田。

Corn ethanol is environmentally damaging ; it puts more carbon emissions into the atmosphere over the course of its production and consumption cycle than it takes out , and it uses up cropland that would otherwise be producing food for human or animal consumption .

玉米乙醇正在对环境造成破坏；与它去除的碳排放相比，它在生产和消费环节上向大气释出更多的碳排放，而且它占用了原本要用来生产人类或动物食物的田地。

Certainly , cropland requires a great deal more fertilizer and other agricultural chemicals than do animal farms .

当然，和动物饲养场比，农田需要更大量的化肥和其他农药。

Furthermore as the cold qinghai tibet plateau warms china should look to develop cropland reserves there for emergency use .

此外，由于寒冷的青藏高原日益变暖，中国应该在那建设农田保护区以备不时之需。

Pakistan derives about a fifth of its output from agriculture , and much of its most productive cropland is submerged or turned to bog .

巴基斯坦五分之一的产出来自于农业，但其高产量农田中已有许多被淹没或变成了沼泽。