Multiple cropping systems of the world and the potential for increasing cropping intensity

Autor: Jan Philipp Dietrich, Mario Herrero, Katharina Waha, Philip K. Thornton, Felix T. Portmann, Alberte Bondeau, Stefan Siebert
Přispěvatelé: CSIRO Agriculture and Food (CSIRO), Potsdam Institute for Climate Impact Research (PIK), Goethe-University Frankfurt am Main, Centre for Biodiversity and Sustainable Land-use, University of Göttingen, Göttingen, Germany, Georg-August-University [Göttingen], International Livestock Research Institute [CGIAR, Nairobi] (ILRI), International Livestock Research Institute [CGIAR, Ethiopie] (ILRI), Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU), Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), Georg-August-University = Georg-August-Universität Göttingen, Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Global Environmental Change
Global Environmental Change, Elsevier, 2020, 64, pp.102131. ⟨10.1016/j.gloenvcha.2020.102131⟩
Global Environmental Change, 2020, 64, pp.102131. ⟨10.1016/j.gloenvcha.2020.102131⟩
ISSN: 0959-3780
DOI: 10.1016/j.gloenvcha.2020.102131⟩
Popis: Highlights • Global area of different multiple cropping systems quantified for the first time. • Twelve percent of global cropland are used for growing two or three crops in a sequence. • Potential for increasing harvest frequency smaller than previously estimated.
Multiple cropping, defined as harvesting more than once a year, is a widespread land management strategy in tropical and subtropical agriculture. It is a way of intensifying agricultural production and diversifying the crop mix for economic and environmental benefits. Here we present the first global gridded data set of multiple cropping systems and quantify the physical area of more than 200 systems, the global multiple cropping area and the potential for increasing cropping intensity. We use national and sub-national data on monthly crop-specific growing areas around the year 2000 (1998–2002) for 26 crop groups, global cropland extent and crop harvested areas to identify sequential cropping systems of two or three crops with non-overlapping growing seasons. We find multiple cropping systems on 135 million hectares (12% of global cropland) with 85 million hectares in irrigated agriculture. 34%, 13% and 10% of the rice, wheat and maize area, respectively are under multiple cropping, demonstrating the importance of such cropping systems for cereal production. Harvesting currently single cropped areas a second time could increase global harvested areas by 87–395 million hectares, which is about 45% lower than previous estimates. Some scenarios of intensification indicate that it could be enough land to avoid expanding physical cropland into other land uses but attainable intensification will depend on the local context and the crop yields attainable in the second cycle and its related environmental costs.
Databáze: OpenAIRE
Externí odkaz: