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Urban Expansion and Farmland Loss in Beijing during 1980-2015

Author:
Hu, Yingjie  Kong, Xiangbin  Zheng, Ji  Sun, Jin  Wang, Linlin  Min, Mingzhe  


Journal:
SUSTAINABILITY


Issue Date:
2018


Abstract(summary):

The analysis of urban land expansion and farmland loss is essential to adequately understand the land use change in a rapidly urbanizing China. We found that both urban expansion and farmland loss in Beijing experienced high- and low-speed stages and their spatial patterns were consistent during the past 35 years as most of the newly expanded urban land was converted from farmland. The area of farmland loss by urban expansion in Beijing is 12.6 km(2)/year, 39.86 km(2)/year, 23.38 km(2)/year, and 41.11 km(2)/year during the period of 1980-1990, 1990-2000, 2000-2010, and 2010-2015, respectively. The urban expansion in Beijing continuously preferred to consume above average quality farmland during 1980-2015. Meanwhile, although the urban expansion in Beijing was highly dependent on occupying farmland, the dependence of urban expansion on farmland consumption has declined over time. However, the contribution of urban expansion on farmland loss increased during 1980-2010 and decreased afterward. In order to protect the farmland from urban expansion, we call for more effort to improve the urban land use efficiency with rigid controls over areas of urban expansion.


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