Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.biocon.2021.108963
Title: Global hotspots of conversion risk from multiple crop expansion
Authors: Zhang, Y
Pang, M
DICKENS, BORAME SUE LEE 
Edwards, DP
CARRASCO TORRECILLA,LUIS R 
Keywords: Agricultural expansion
Intensification
Agricultural rent
Species extinction
Scenarios
Issue Date: 1-Feb-2021
Publisher: Elsevier BV
Citation: Zhang, Y, Pang, M, DICKENS, BORAME SUE LEE, Edwards, DP, CARRASCO TORRECILLA,LUIS R (2021-02-01). Global hotspots of conversion risk from multiple crop expansion. Biological Conservation 254 : 108963-108963. ScholarBank@NUS Repository. https://doi.org/10.1016/j.biocon.2021.108963
Abstract: Habitat loss caused by agricultural expansion is a major threat to global biodiversity. A key question is which specific crops will lead to future hotspots of crop conversion. We develop a spatially explicit land-rent contagion model of agricultural conversion for the top crops in terms of global area and value of production, and evaluate crop-specific threats under scenarios of current yields and closed yield gaps. We show that the ecoregions of the Western Congolian swamp forests (coconut), Northwestern Congolian lowland forests (oil palm, maize, rice), and Southern American Pacific mangroves (oil palm) present the highest extinction potential for birds and mammals. Closing yield gaps is able to reduce bird and mammal extinctions by 20% and 6%, respectively, and is most effective for rice, soybean and wheat. This provides direction of which crops to be targeted by future intensification policies. Corruption and one-party states appear to protect many of the remaining tropical natural habitats from crop expansion. Once corruption is improved, protected area network planning prior to conversion threats is crucial to preserve global biodiversity.
Source Title: Biological Conservation
URI: https://scholarbank.nus.edu.sg/handle/10635/190903
ISSN: 0006-3207
DOI: 10.1016/j.biocon.2021.108963
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