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Suburban sprawl measurement and landscape analysis of cropland and ecological land: A case study of Jiangsu Province, China

Yasi Tian and Junyi Chen

Growth and Change, 2022, vol. 53, issue 3, 1282-1305

Abstract: Suburban sprawl occurs when suburban construction exceeds the need for urban–rural development. This phenomenon has garnered considerable attention and criticism due to the outcomes of land resource wastage, environmental pollution, loss of green space, and farmland degradation. However, due to the complexity of suburbs, suburban boundaries remain unclear, which increases the difficulty and uncertainty in the assessment of suburban sprawl. To fill the research gap, this study conducted an empirical study of Jiangsu Province to identify the suburban boundaries in 1998 and 2018 using a logistic‐geographically weighted regression model. By constructing a suburban sprawl index, this study estimates the suburban sprawl at a city scale. This study obtained the following findings: first, from 2000 to 2018, the proportion of suburban areas in Jiangsu increased from 14.36% to 23.29%. Second, the ratio of suburban expansion areas to suburban sprawl areas revealed the efficiency of suburban land use. As results, Nantong had the highest ratio value of 4.49, and Nanjing had the smallest ratio value of 0.58. Finally, this study demonstrated the effects of suburban sprawl on cropland and ecological landscape fragmentation. The present study contributes to a new perspective of identifying suburbs and provides suggestions for cropland and ecological land protection.

Date: 2022
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