Abstract
Developing countries account for about 86.5% of the world’s population and are experiencing rapid urbanization. Globally, the increase in the urban population is generally accompanied by the expansion of the latter and construction lands, as well as the reduction in the rural population and rural construction lands. However, with the rapid development of urbanization in China, the rural population has decreased, while the proportion of rural construction lands has increased, resulting in a significant waste of land resources. In order to quantitatively characterize the degree of deviation between the permanent rural population and rural construction lands based on the 2009–2016 demographic data and land survey data in China, we comprehensively used the decoupling model and the coordination degree model to analyze the temporal change characteristics, spatial distribution law, and the degree of deviation of rural construction land areas and the number of rural permanent residents. Firstly, according to the decoupling model, the type of decoupling between the area of rural construction lands and the number of rural permanent residents at the national scale was strongly negative. Secondly, according to the coordination degree model, the coordination type between rural construction land areas and the rural resident population was uncoordinated; at the provincial scale, the coordination system involved one city and one district (Beijing and the Tibet Autonomous Region) and the basic coordination of two cities (Tianjin and Shanghai). Xinjiang and Qinghai belonged to the reconcilable type, and the other 25 provinces belonged to the uncoordinated type. Finally, according to the comprehensive measurement model, the number of rural permanent residents and rural construction lands showed two types of decoupling: highly strong negative decoupling incoordination and moderately and weakly strong negative decoupling incoordination.
Highlights
Introduction published maps and institutional affilBetween 1950 and 2015, the urbanization rate of less-developed countries and regions increased from 17.7 to 49.0%
This study reveals the dynamic relationship between permanent residents and construction lands in rural areas of China and quantitatively measured the degree of deviation between them, which is conducive to providing a scientific basis for scientifically formulating land-management policies
P(n+1) − Pn /Pn where n is the nth year; n + 1 is the decoupling coefficient in the n + 1 year; L(n+1) is the area of rural construction lands in the n + 1 year; Ln is the area of rural construction lands in the n year; P(n+1) is the number of rural permanent residents in the n + 1 year; and Pn is the number of rural permanent residents in the nth year
Summary
Between 1950 and 2015, the urbanization rate of less-developed countries and regions increased from 17.7 to 49.0%. China had made the greatest contribution to the increase in urbanization, and China’s urbanization had become an important factor affecting the world’s population and economic development [1]. 1978 to 2018, the number of cities in China increased from 193 to 657, and the urbanization rate increased from 17.9 to 58.5% [2]. Urbanization has played an important role in promoting economic development and social progress. Urbanization has transformed much of the rural population into urban residents [3,4], delivering huge social benefits. China’s rural construction land areas have not decreased with the transfer of the rural permanent resident population, and the phenomenon of iations
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