Document Type
Paper Presentation
Start Date
6-10-2023 2:30 PM
End Date
6-10-2023 3:15 PM
Abstract
Rapid urbanization has resulted in widespread loss of cropland, but the spatial-temporal patterns and key stages of this transformation have not been clearly understood. In this study, we mapped cropland loss caused by urban expansion in rural-urban continuum since 2000 based on multiple global land maps. Results show a total 3.35 × 106 ha cropland loss resulting from urban expansion and about 70 % of this land use change occurred in Asia. However, there is a trend of reducing cropland loss area caused by urbanization over the years. In a detailed view of urbanization stages, most cropland losses occurred in the stage of further urbanization of towns. Such land use change patterns are relatively rare in urban centers with a high degree of urbanization or in rural areas that have not yet begun urbanization. Especially in Asia, where nearly 60% of cropland loss occurs in densely clustered towns. These findings identify the global spatial-temporal patterns and key regions in which cropland loss caused by urban expansion occurs, and further highlight the implicit link between urbanization stages and land-use change patterns, which could provide data and analytical support for more sustainable land use in the future.
DOI
10.5703/1288284317681
Included in
Different Stages of Urbanization Lead to Cropland Loss: Geospatial Data Analysis in a Global Rural-Urban Continuum Perspective
Rapid urbanization has resulted in widespread loss of cropland, but the spatial-temporal patterns and key stages of this transformation have not been clearly understood. In this study, we mapped cropland loss caused by urban expansion in rural-urban continuum since 2000 based on multiple global land maps. Results show a total 3.35 × 106 ha cropland loss resulting from urban expansion and about 70 % of this land use change occurred in Asia. However, there is a trend of reducing cropland loss area caused by urbanization over the years. In a detailed view of urbanization stages, most cropland losses occurred in the stage of further urbanization of towns. Such land use change patterns are relatively rare in urban centers with a high degree of urbanization or in rural areas that have not yet begun urbanization. Especially in Asia, where nearly 60% of cropland loss occurs in densely clustered towns. These findings identify the global spatial-temporal patterns and key regions in which cropland loss caused by urban expansion occurs, and further highlight the implicit link between urbanization stages and land-use change patterns, which could provide data and analytical support for more sustainable land use in the future.