skip to main content
Ngôn ngữ:
Giới hạn tìm kiếm: Giới hạn tìm kiếm: Dạng tài nguyên Hiển thị kết quả với: Hiển thị kết quả với: Dạng tìm kiếm Chỉ mục

The occupation of cropland by global urban expansion from 1992 to 2016 and its implications

Environmental research letters, 2020-08, Vol.15 (8), p.84037 [Tạp chí có phản biện]

2020 The Author(s). Published by IOP Publishing Ltd ;Copyright IOP Publishing Aug 2020 ;ISSN: 1748-9326 ;EISSN: 1748-9326 ;DOI: 10.1088/1748-9326/ab858c ;CODEN: ERLNAL

Tài liệu số/Tài liệu điện tử

Trích dẫn Trích dẫn bởi
  • Nhan đề:
    The occupation of cropland by global urban expansion from 1992 to 2016 and its implications
  • Tác giả: Huang, Qingxu ; Liu, Ziwen ; He, Chunyang ; Gou, Siyuan ; Bai, Yansong ; Wang, Yihang ; Shen, Miaogen
  • Chủ đề: Agricultural land ; Confidence intervals ; Developing countries ; Expansion ; Food ; Food intake ; Food security ; land use change ; LDCs ; Net Primary Productivity ; Sustainable development ; sustainable development goals ; Urban areas ; Urban development ; urban expansion ; Urban sprawl ; urban sustainability
  • Là 1 phần của: Environmental research letters, 2020-08, Vol.15 (8), p.84037
  • Mô tả: Large-scale urban expansion worldwide has exerted great impacts on cropland and its net primary productivity (NPP), which can affect whether food security and sustainable development goals will be met at global and local scales. Although important, the impacts at the global scale over the last 25 years remain unclear. Based on the latest long-term dynamic urban expansion data, this study analyzed global urban expansion and its impacts on cropland NPP from 1992 to 2016 at multiple scales. The results showed that the expansion of urban land occupied a total of 159 170 km2 of cropland, accounting for 45.9% of the total expanded urban area. The cropland NPP decreased by 58.71 (56.52 ∼ 59.81, 95% confidence interval) TgC as a result of urban expansion, which represents approximately 0.42% (0.40% ∼ 0.43%) of the multiyear average of total cropland NPP from 2000 to 2015. If the cropland NPP losses were converted to the grain production (i.e. 1.44 × 107 tons), it is equivalent to the minimum annual food intake demands for at least 36 million people. More importantly, urban expansion is exacerbating the risk of food security in developing countries in Asia and Africa, such as China, Vietnam and Egypt. In the future, these countries should balance urban expansion with cropland protection by strictly restricting the occupation of cropland and encouraging smart urban growth.
  • Nơi xuất bản: Bristol: IOP Publishing
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1748-9326
    EISSN: 1748-9326
    DOI: 10.1088/1748-9326/ab858c
    CODEN: ERLNAL
  • Nguồn: Freely Accessible Journals
    AUTh Library subscriptions: ProQuest Central
    IOPscience (Open Access)
    IOP 英国物理学会OA刊
    ROAD: Directory of Open Access Scholarly Resources
    DOAJ Directory of Open Access Journals
Trở lại danh sách kết quả
Về trang trướcTrước Kết quả  19 Tiếp theoTới trang tiếp theo
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Đang tìm Cơ sở dữ liệu bên ngoài...