Urban expansion and its consumption of high-quality farmland in Beijing, China
文献类型：SCI/SSCI论文
| 作者 | Song W.; Pijanowski, B. C.; Tayyebi, A. |
| 发表日期 | 2015 |
| 关键词 | Urban expansion High-quality farmland Land evaluation Land transformation model Beijing tianjin-hebei region land-use economic-growth cellular-automata spatial dynamics national scale united-states urbanization model environment |
| 英文摘要 | 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. |
| 出处 | Ecological Indicators |
| 卷 | 54 |
| 页 | 60-70 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1470-160X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38852]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Song W.,Pijanowski, B. C.,Tayyebi, A.. Urban expansion and its consumption of high-quality farmland in Beijing, China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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