Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab6669 |
Trends in urban land expansion, density, and land transitions from 1970 to 2010: a global synthesis | |
Guneralp, Burak1; Reba, Meredith2; Hales, Billy U.1; Wentz, Elizabeth A.3; Seto, Karen C.2 | |
2020-04-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2020 |
卷号 | 15期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The physical expansion of urban areas lead to lasting impacts on landscapes and livelihoods. Here, we conduct a global synthesis of trends in urban land expansion, in urban population densities, and lands converted into urban from 1970 to 2010. We find that small-medium urban areas lead their larger counterparts in both rates of urban land expansion and decreases in urban population densities. Urban population densities have consistently declined only in India, China, North America, and Europe with significant exceptions across city sizes. Over 60% of the reported urban expansion was formerly agricultural land with China, Southeast Asia, and Europe in the lead. Counterfactual analysis suggests that, due to the decrease in urban population densities, an estimated 125 000 km(2) land was converted to urban land uses that could have otherwise remained in cultivation or as natural vegetation. In particular, in India and Nigeria, with much of their populations dependent on agriculture, 85% and 30% more land, respectively, was converted to urban land due to decreasing urban population densities. With increasing urbanization, proactive management of urban land expansion, especially in small and medium cities, will be critical for saving agricultural lands in peri-urban regions while creating equitable and affordable urban landscapes. |
英文关键词 | urban sustainability urban planning land use efficiency land use land change science global environmental change |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000521471000001 |
WOS关键词 | TOWN DEVELOPMENT ; CHINA ; URBANIZATION ; GROWTH ; SUSTAINABILITY ; BIODIVERSITY ; PROJECTIONS ; CHALLENGES ; PROTECTION ; COUNTRIES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279267 |
专题 | 气候变化 |
作者单位 | 1.Texas A&M Univ, College Stn, TX 77843 USA; 2.Yale Univ, New Haven, CT 06520 USA; 3.Arizona State Univ, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Guneralp, Burak,Reba, Meredith,Hales, Billy U.,et al. Trends in urban land expansion, density, and land transitions from 1970 to 2010: a global synthesis[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(4). |
APA | Guneralp, Burak,Reba, Meredith,Hales, Billy U.,Wentz, Elizabeth A.,&Seto, Karen C..(2020).Trends in urban land expansion, density, and land transitions from 1970 to 2010: a global synthesis.ENVIRONMENTAL RESEARCH LETTERS,15(4). |
MLA | Guneralp, Burak,et al."Trends in urban land expansion, density, and land transitions from 1970 to 2010: a global synthesis".ENVIRONMENTAL RESEARCH LETTERS 15.4(2020). |
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