each hectare (2.47 acres) of corn planted in the united states will yield enough utilizable protein to feed 12 people 60 grams of protein per day for one year.
在美国,每公顷(2.47英亩)种植的玉米,一年可以生产出足够给12人每天吃60g的可利用蛋白质。
fifty years from now, according to some projections, each hectare will have to cater[2] for 43.
据预测,50年后每公顷稻田将必须为43个人供应口粮。
「we pay 4000 rupees (93 dollars) for each hectare of crops lost so i don「t know who came up with that silly figure, 」 parihar said.
「我们付四千卢比(九十三美元)给每公顷受损的农作物,因此我不知道是谁提出那个愚蠢的金额,」帕里哈说。
compared to the 1960s, each hectare of intact african forest has trapped an extra 0.6 tonnes of carbon a year.
和六十年代相比,每年每公顷原始森林额外多吸收了0.6吨碳排放。
however, proper accounting shows that for each hectare government subsidies formed $8,412 of this figure and there were costs, too: $1,000 for pollution and $12,392 for losses to ecosystem services.
但是,在会计角度进行更加严格的成本核算表明,在这种由红树林向虾场的转换带来的$9632的商业收益中,由政府给予的补贴就占了$8412。 而这种转换的成本为$1000的污染和$12392生态破坏。
trees can」t be planted too many, and should be maintained between 150 and 250 plants for each hectare to leave more sunshine and space for the shrubs.
乔木数量不宜太多,每公顷宜在150-250株,以便给灌木提供充足的空间与光照条件;
fifty years from now, according to some projections, each hectare will have to cater for 43.
据预测,50年后每公顷稻田将必须为43个人供应口粮。
this is sufficient to remove 100 tonnes of co2 from the atmosphere for each hectare of land.
而这就足以使每公顷土地从大气中吸除100吨co2。