Featured Graphic. Mushrooming Jiedaos, Growing Cities: An Alternative Perspective on Urbanizing China

Abstract

With more than 15 million new urban residents entering its cities every year, China is witnessing one of the greatest socioeconomic and environmental transformations in human history. In addition to these ongoing changes, urbanization in China often involves a significant political dimension, as the government would purposely accord city status to settlements, regardless of their developmental level: Largely rural settlements (eg, Zhen) could be accorded with the city status (eg, Jiedao) overnight by administrative power. Such redesignation is nontrivial as city status often translates into real socioeconomic changes; city status is closely linked to the land-use quota, provision of public services, local governments' legislature power, as well as residents' hukou. While socioeconomic and environmental aspects of Chinese cities have been analyzed extensively with aggregated statistics and/or remote sensing data (Deng et al, 2012), little is known about the shifting political geography of Chinese cities: that is, where new city status is being granted. It is this lacuna that our project aims to fill. We focus on the basic building block of a city proper in China: Jiedao (subdistricts). China has three township-level administrative units: Jiedao in the urban area and its counterparts in the rural side (Xiang, townships; and Zhen, towns). The re-designation of city status often involves Zhen and Jiedao: Zhens are considered as 'next in the pipeline' for city status and turned into Jiedaos when there is a political and/or economic need. We geocoded the 41 871 township-level units based on the Population Census of China, and estimated the spatial extent of individual units with Voronoi diagrams for the years of 2000 and 2010. The end product is a first map of 'mushrooming' Jiedaos in China. The total number of Jiedaos has grown from 5510 to 6923-a 25% increase-during the period 2000-10. Most new cities-proper have been created around major urban regions along the economically more developed eastern coast [eg, Yangtze River Delta, Pearl River Delta, Shandong Peninsula, and Beijing-Tianjin-Hebei (BTH)]. Other regions with noticeable growth are Central Henan in Central China, as well as the Chengdu-Chongqing corridor in West China. We also mapped out the distribution of Zhens: regions in East and Central China (eg, Shandong and Henan) feature predominantly, revealing the potential for future urban expansion. As city status often translates into real urban growth, we conjecture that the uneven geography of mushrooming Jiedaos would entrench the already huge East-West divide in China.

The impact of urban form on commuting in large Chinese cities

“…Our results suggest that spatial planning should be directed towards maintaining or reinforcing high-density clusters. Current developments, fuelled by increasing urbanization and prosperity, seem to lead to more sprawled cities (Deng and Huang 2004;Zhao 2010;Wu et al 2015) and thus pose the risk of increased congestion, traffic-induced emissions and a further deterioration of the urban environment.…”

Understanding urban China with open data

“…More specifically, we geocoded all township-level units based on the Population Census of China, and estimated population densities for the years of 2000 and 2010 using official township boundaries ( Fig. 2; Wu, Long, Mao, & Liu, 2015). Along the same lines, we have produced block-boundaries for all Chinese cities, identified urban blocks based on their functionalities, and simulated urban growth for five year periods at the block level (Long, Wu, & Mao, 2014).…”

Rapid Population Growth in Chinese Floodplains from 1990 to 2015

“…To evaluate the quality of the CTDHD data, a township level census data of 2010 was employed, which was released from the Population Census Office of China [ 32 ]. It is the most detailed dataset that is publicly accessible.…”