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1城市化对水循环系统的影响我国正经历着快速的城市化过程,1978年以来,我国城镇常住人口从1.7亿人增加到7.3亿人,城镇化率从17.9%提升到53.7%,城市数量从193个增加到658个,形成了武汉、成都、南京、东莞、西安、沈阳、杭州、哈尔滨、香港、佛山等11座特大城市以及上海、北京、重庆、天津、广州、深圳6个人口超过1000万的超大城市。长三角、珠三角、京津冀、长江中游、成渝、海峡西岸、中原、哈长、辽中南、关中、
1 The Impact of Urbanization on the Water Cycle System China is experiencing rapid urbanization. Since 1978, the population of urban residents in China has increased from 170 million to 730 million. The urbanization rate has risen from 17.9% to 53.7% 193 to 658, forming 11 megacities in Wuhan, Chengdu, Nanjing, Dongguan, Xi’an, Shenyang, Hangzhou, Harbin, Hong Kong and Foshan as well as over 6 cities in Shanghai, Beijing, Chongqing, Tianjin, Guangzhou and Shenzhen Million in mega-cities. Yangtze River Delta, Pearl River Delta, Beijing-Tianjin-Hebei, the middle reaches of the Yangtze River, Chengdu-Chongqing, the west bank of the Straits, the Central Plains, Ha Chang, Liao Zhongnan, Guanzhong,