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1当前城市面临的问题当今世界,一半以上的人口生活在城市,地球已经成为一个庞大的城市网络和城市联盟,目前城市化已经成为全球最显著的经济特征之一。然而星罗棋布、快速扩张的城市也给人类生活带来一系列的问题:交通拥堵、能源短缺、环境污染、自然灾害和突发事件频发等,这不仅降低了城市居民的生活质量,而且令地球的安全面临挑战。城市的可持续发展也面临着巨大挑战,如城市消耗了75%的能源;消耗了60%的水资源;排放了80%的温室气体。为应对城市化和人口结构变化带来的严峻挑战,城市
1 Current Problems Faced by Cities Today, more than half of the population lives in cities. The Earth has become a huge urban network and urban alliance. At present, urbanization has become one of the most prominent economic characteristics in the world. However, the rapidly expanding cities also bring a series of problems to human life: traffic congestion, energy shortage, environmental pollution, natural disasters and frequent accidents, which not only reduce the quality of life of urban residents, but also make the earth The security is facing challenges. Urban sustainability also poses significant challenges such as cities that consume 75% of their energy, 60% consume water and 80% of their greenhouse gases. In response to the severe challenges posed by urbanization and demographic changes, cities