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城市作为人类文明发展的标志,其人口将在新世纪初首次超过农村人口。目前,中国的城镇化水平已达到了36％,城镇人口达到了4.5亿,再过30年,我国的城市人口将达到9亿,城市生态保护面临着巨大的压力和挑战。 首先,近20年来,中国经济高速发展,城市化进程超过世界上任何国家。随着城市规模的不断扩大,人类活动日益频繁,与之同时,相应的产生了大量垃圾。就目前而言,我国垃圾的产生量约每年1亿吨,并且还在以每年8％-10％的速度递增,到2000年
As a sign of the development of human civilization, the city will surpass the rural population for the first time in the new century. At present, the urbanization level in China has reached 36%, and the urban population has reached 450 million. In another 30 years, the urban population in China will reach 900 million. The urban ecological protection is under enormous pressure and challenges. First of all, in the recent 20 years, China has enjoyed rapid economic growth and urbanization over other countries in the world. As the size of the city continues to expand, human activities are increasingly frequent, and at the same time a corresponding amount of rubbish is generated. For now, the amount of rubbish generated in our country is about 100 million tons per year, and it is still increasing at the rate of 8% -10% per year by the year 2000