Many forecasts suggest that by 2030, the four largest emerging-market economies will have overtaken the G-7 in combined size, and that by 2050, today’s emerging-market economies will represent more than half the global economy and an even larger share of the world’s population. These forecasts all assume that economic growth will be generated in cities.
很多预测表明，到2030年，四个最大的新兴市场经济体整体实力将超过G – 7；到2050年，这些新兴市场经济经济份额将占据全球经济的一半以上，人口所占的比重将更大。这些预测都假定城市发展不会停滞不前。