14
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Impacts of land use, population, and climate change on global food security

      1 , 2 , 2 , 3
      Food and Energy Security
      Wiley

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references46

          • Record: found
          • Abstract: not found
          • Article: not found

          Food in the Anthropocene: the EAT–Lancet Commission on healthy diets from sustainable food systems

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Food security: the challenge of feeding 9 billion people.

            Continuing population and consumption growth will mean that the global demand for food will increase for at least another 40 years. Growing competition for land, water, and energy, in addition to the overexploitation of fisheries, will affect our ability to produce food, as will the urgent requirement to reduce the impact of the food system on the environment. The effects of climate change are a further threat. But the world can produce more food and can ensure that it is used more efficiently and equitably. A multifaceted and linked global strategy is needed to ensure sustainable and equitable food security, different components of which are explored here.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Global food demand and the sustainable intensification of agriculture.

              Global food demand is increasing rapidly, as are the environmental impacts of agricultural expansion. Here, we project global demand for crop production in 2050 and evaluate the environmental impacts of alternative ways that this demand might be met. We find that per capita demand for crops, when measured as caloric or protein content of all crops combined, has been a similarly increasing function of per capita real income since 1960. This relationship forecasts a 100-110% increase in global crop demand from 2005 to 2050. Quantitative assessments show that the environmental impacts of meeting this demand depend on how global agriculture expands. If current trends of greater agricultural intensification in richer nations and greater land clearing (extensification) in poorer nations were to continue, ~1 billion ha of land would be cleared globally by 2050, with CO(2)-C equivalent greenhouse gas emissions reaching ~3 Gt y(-1) and N use ~250 Mt y(-1) by then. In contrast, if 2050 crop demand was met by moderate intensification focused on existing croplands of underyielding nations, adaptation and transfer of high-yielding technologies to these croplands, and global technological improvements, our analyses forecast land clearing of only ~0.2 billion ha, greenhouse gas emissions of ~1 Gt y(-1), and global N use of ~225 Mt y(-1). Efficient management practices could substantially lower nitrogen use. Attainment of high yields on existing croplands of underyielding nations is of great importance if global crop demand is to be met with minimal environmental impacts.
                Bookmark

                Author and article information

                Journal
                Food and Energy Security
                Food Energy Secur
                Wiley
                2048-3694
                2048-3694
                February 2021
                November 05 2020
                February 2021
                : 10
                : 1
                Affiliations
                [1 ]Department of Environment and Geography Stockholm Environment Institute York University of York York UK
                [2 ]Institute of Biological and Environmental Sciences University of Aberdeen Aberdeen UK
                [3 ]Department of Geography King's College London London UK
                Article
                10.1002/fes3.261
                b11f409d-7a3b-4f20-b4f0-a4d7c07eee22
                © 2021

                http://creativecommons.org/licenses/by/4.0/

                http://doi.wiley.com/10.1002/tdm_license_1.1

                History

                Comments

                Comment on this article