Urban expansion and its consumption of high-quality farmland in Beijing, China
By Wei Song, Bryan C. Pijanowski, A. Tayyebi. 2015
188 citations recorded by the source corpus.
China faces the challenge of using limited farmland to feed more than 1.3 billion people. Accelerated urbanization has exacerbated this challenge by consuming a large quantity of high-quality farmland (HQF). It is therefore essential to assess the degree to which urban expansion has preferentially consumed HQF, and discern the mechanism behind this. We found urban areas in Beijing to expand at speeds of 48.97 km(2)/year, 21.89 km(2)/year, 62.30 km(2)/year and 20.32 km(2)/year during the periods 1986-1995, 1995-2000, 2000-2005 and 2005-2020, respectively. We developed an indicator of HQF consumption due to urban expansion, representing the ratio of HQF consumed to its proportion of overall farmland, and found its values were 2.21, 1.57, 1.99 and 1.10 for 1986-1995, 1995-2000, 2000-2005 and 2005-2020, respectively. Thus, although HQF has been overrepresented in the farmland consumed by Beijing's urbanization, this phenomenon has decreased overtime. Centralized expansion has contributed greatly to consumption of HQF. Topography and distances to urban and water bodies determine the relative consumption of HQF in urbanization. (C) 2015 Elsevier Ltd. All rights reserved.
Subfields: Global and Planetary Change, Health, Toxicology and Mutagenesis, Plant Science
View Paper: https://www.semanticscholar.org/paper/f45068be6e5a485f2c2cb4ab132a9774d8f9bf6f
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Citations in the corpus
- Strategic adjustment of land use policy under the economic transformation (2018, background): “Urban proportion of the world population is projected to be 67.2% in 2050 based on a forecast by the United Nations (2012) (Song et al., 2015).”
- Analysis of the spatial mismatch of grain production and farmland resources in China based on the potential crop rotation system. (2017, background): “Grain production is not only affected y certain specific natural factors, such as the location of farmland He et al., 2013; Song et al., 2015; Xu and Zhu, 2015), crop rotation ystems (Cornish et al., 2015a,b; Rigolot et al., 2016), climate change Bandara and Cai, 2014; Cheeseman, 2016; Rutten et…”