论文部分内容阅读
据联合国粮农组织估计,到2050年,全球粮食需增产超过70%才能满足地球上90亿人口的刚性需求。但是,实现这一增长目标受到了诸多限制:一方面,为解决人口增长带来的食物需求问题,粮食产量年增幅需达到37%以上,而这一问题在贫穷的发展中国家尤为突出。另一方面,强降水、热浪、海平面升高等现象在世界多地发生,产生了洪水、干旱、盐碱化等严重后果,这些极端天气频发严重制约了粮食的持续增产,继而威胁到全
According to the UN Food and Agriculture Organization (FAO), it is estimated that by 2050, more than 70% of global food needs will be boosted to meet the rigid demand of 9 billion people on Earth. However, there are many constraints to this growth goal: on the one hand, to tackle the food demand caused by population growth, the annual increase in food production needs to reach more than 37%, a problem that is particularly prominent in poor developing countries. On the other hand, phenomena such as heavy rainfall, heat waves and sea level rise occur more frequently in the world, causing severe consequences of floods, droughts and salinization. These extremely frequent weather conditions have seriously hampered the continuous increase of grain output, which in turn threatens all