新研究发现许多关键资源已经过了高峰期

       GLOBAL - As the worlds resources face enormous challenges, researchers from the US and Denmark have analysed the production and extraction rates of 27 global renewable and non-renewable resources (including fish, meat and milk) and found that many of the resources reached their peak a few years ago.

       The 20 renewable resources, such as maize, rice, wheat or soya, which represent around 45 per cent of the global calorie intake according to the Food and Agriculture Organisation of the United Nations (FAO), as well as animal products, such as fish, meat, milk and egg. For 18 of these renewable resources the annual growth rate (for example the increase in meat production or in fish catch) reached its peak a few years ago.

　　全球——世界资源面临巨大的挑战，美国和丹麦的研究人员分析了27种全球可再生资源和不可再生资源(包括鱼类，肉类和奶) 的生产和萃取率，发现许多种资源几年前就达到了峰值。

　　这20种可再生资源，如玉米、大米、小麦和大豆， 根据联合国粮食及农业组织(粮农组织)的说法，和动物产品如鱼类、肉类、牛奶和鸡蛋一样，代表着全球约45%的卡路里摄入量。其中18种可再生资源的年增长率(例如肉类生产的增加或鱼类捕捞)在几年前达到顶峰。