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城市消耗着地球最多的资源。目前,城市人口约占全球总人口的50%,却消耗了75%的能源及资源,产生人类活动引起温室效应气体的75%。城市化过程中,由于基础建设需要大量高能源高碳密度原材料产品,如钢材、水泥,消耗了大量能源并产生了无比庞大的废气废水,加之交通废气和固体废物,城市已成为全球气候变暖的主要源头。解决城市问题是降低全球碳排放最重要的途径。世界一些主要城市已对降低碳排放设定了明确目标,如悉尼2030年温室气体排放将较2006年减少70%,哥本哈根将在2025年全部使用无化石燃料。目前,我国城市能源消耗及与碳排
The city consumes the most resources on earth. At present, the urban population accounts for about 50% of the global population, but consumes 75% of the energy and resources, resulting in human activities caused 75% of greenhouse gases. In the process of urbanization, the city has become a global warming source due to the large amount of high-energy and high-carbon density raw material products such as steel and cement consumed in infrastructures, large amounts of energy consumed and huge amounts of waste water and waste generated by transportation and solid waste. The main source. Addressing cities is the most important way to reduce global carbon emissions. Some major cities in the world have set clear targets for reducing carbon emissions. For example, Sydney will reduce greenhouse gas emissions by 70% by 2030 compared with 2006 and Copenhagen will use fossil fuels entirely by 2025. At present, China’s urban energy consumption and carbon emissions