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正如大家所知,可持续发展的观念从提出到实践已经数十年了,现已成为世界各国的共识。当今,危及人类社会可持续发展的有诸多问题,但从人类居住的范围来说,人口剧增与不可再生的土地资源的短缺成为最尖锐的矛盾,是人类社会所面临的最直接、最急迫的问题。据联合国预测到,2050年世界人口将达到93亿,至2070年将相对稳定在100亿左右。在中国尽管人口出生率已有明显回落,到2050年预测还将达到15亿,占世界人口的1/6。我们不但要认真解决好今天城市建设中的人口与土地这一矛盾,而且还要切实为子孙后代在未来的居住问题做好规划,留有发展余地。
As everyone knows, the concept of sustainable development has been proposed and practiced for decades. Now it has become the consensus of all countries in the world. Today, there are many problems jeopardizing the sustainable development of human society. However, from the perspective of the extent of human habitation, the sharp increase in population and the shortage of non-renewable land resources are the most acute contradictions and the most direct and urgent challenges facing human society. The problem. According to prediction by the United Nations, the world population will reach 9.3 billion in 2050 and will be relatively stable at about 10 billion by 2070. In China, despite the fact that the birth rate has dropped significantly, by 2050, it is predicted that it will reach 1.5 billion, accounting for 1/6 of the world’s population. We must not only seriously resolve the contradiction between the population and land in today’s urban construction, but also do a good job of planning for future generations of future generations and leave room for development.