Abstract
Abstract: The suitability of natural environment for human settlements is assessed by human settlements environment index (HEI) at the grid scale in China. Population agglomeration and shrinking (PAS) is indicated by population density at the county level. Combining HEI and PAS, this paper established the sustainable human settlements functional division evaluation system and division model using GIS. Taking into consideration environmental carrying capacity and economic development levels and potentials, this work brings forward a feasible division scheme at the county level in China. The results show that: sustainable human settlements functions generally decrease from the southeast to the northwest, which reflects the most significant regional difference in China. Highly sustainable region, with a total area of 139.75×104 km2 and a population of 430.84 million, is mainly located in the southeastern coast of China, the middle and lower reaches of the Yangtze River, Sichuan Basin, Huanghe-Huaihe-Haihe Ri...
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