Journal
SUSTAINABILITY
Volume 11, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/su11051242
Keywords
cultivated land; spatial heterogeneity; global; agro-ecological zone; land use changesgeopolitical
Funding
- Major State Basic Research Development Program of China [2015CB954101, 2015CB954103]
- National Science Foundation of China [41671385, 41622108, 41871178]
- surveying mapping and geoinformation research project of Jiangsu Province [JSCHKY201814]
- QingLan Project of Nanjing Normal University
- Priority Academic Program Development of Jiangsu Higher Education Institutions [164320H116]
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Food security requires a thorough understanding of the spatial characteristics of cultivated land changes on a global scale. In particular, the spatial heterogeneity of global cultivated land changes needs to be evaluated with high spatial resolution data. This study aims to analyse the spatial distribution of global cultivated land and the characteristics of its variation, by using GlobeLand30 data for 2000 and 2010 with a 30-m spatial resolution. The cultivated land percentage and rate of cultivated land use change are calculated based on 18 agro-ecological zones (AEZs), 32 geopolitical and socioeconomic regions, and 283 world regions. The results show that (1) more cultivated land is located in regions under a temperate climate and moderate moisture conditions; (2) the percentage of cultivated land is related to the gross domestic product (GDP) and population, while increases and decreases in cultivated land are related to the rural population, policy encouragement, urbanization, and economic development; and (3) the percentage of cultivated land and rate of land use change within an AEZ vary greatly due to the different socioeconomic conditions, and the values within a geopolitical area also vary, due to different natural conditions.
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