| Records |
| Author |
Bennetzen, E.H.; Smith, P.; Soussana, J.-F.; Porter, J.R. |
| Title |
Identity-based estimation of greenhouse gas emissions from crop production: case study from Denmark |
Type |
Journal Article |
| Year |
2012 |
Publication |
European Journal of Agronomy |
Abbreviated Journal |
European Journal of Agronomy |
| Volume |
41 |
Issue |
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Pages |
66-72 |
| Keywords |
kaya identity; kaya-porter identity; crop production; greenhouse gas emission; energy intensity; mitigation; food system; agriculture; mitigation; energy; opportunities; inventory; europe; policy; land |
| Abstract |
In order to feed the world we need innovative thinking on how to increase agricultural production whilst also mitigating climate change. Agriculture and land-use change are responsible for approximately one-third of total anthropogenic greenhouse gas (GHG) emissions but hold potential for climate change mitigation but are only tangentially included in UNFCCC mitigation policies. To get a full estimate of GHG emissions from agricultural crop production both energy-based emissions and land-based emissions need to be accounted for. Furthermore, the major mitigation potential is likely to be indirect reduction of emissions i.e. reducing emissions per unit of agricultural product rather than the absolute emissions per se. Hence the system productivity must be included in the same analysis. This paper presents the Kaya-Porter identity, derived from the Maya identity, as a new way to calculate GHG emissions from agricultural crop production by deconstructing emissions into five elements; the GHG intensity of the energy used for production (kg CO2-eq./MJ), energy intensity of the production (MJ/kg dry matter), areal productivity (kg dry matter/ha), areal land-based GHG emissions (CO2-eq./ha) and area (ha). These separate elements in the identity can be targeted in emissions reduction and mitigation policies and are useful to analyse past and current trends in emissions and to explore future scenarios. Using the Kaya-Porter identity we have performed a case study on Danish crop production and find emissions to have been reduced by 12% from 1992 to 2008, whilst yields per unit area have remained constant. Both land-based emissions and energy-based emissions have decreased, mainly due to a 41% reduction in nitrogen fertilizer use. The initial identity based analysis for crop production presented here needs to be extended to include livestock to reflect the entire agricultural production and food demand sectors, thereby permitting analysis of the trade-offs between animal and plant food production, human dietary preferences and population and resulting GHG emissions. (C) 2012 Elsevier B.V. All rights reserved. |
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2016-07-22 |
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| Language |
English |
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| ISSN |
1161-0301 |
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| Notes |
CropM, ftnotmacsur |
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no |
| Call Number |
MA @ admin @ |
Serial |
4581 |
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| Author |
Świerk, W. |
| Title |
Changes in the quality of surface water bodies against the background of the implementation of the sustainable development program of rural areas in the catchment |
Type |
Book Whole |
| Year |
2012 |
Publication |
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Ph.D. thesis |
| Publisher |
Institute of Technology and Life Science at Falenty |
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PhD |
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PhD |
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no |
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MA @ admin @ |
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5143 |
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| Author |
Rötter, P.; Höhn, J.; Fronzek, S. |
| Title |
Projections of climate change impacts on crop production – a global and a Nordic perspective |
Type |
Conference Article |
| Year |
2012 |
Publication |
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CropM |
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Agriculture and greenhouse gases, NJF (Association of Nordic Agronomists) seminar 453. Oslo, Norway, 2012-11-05 to 2012-11-06 |
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no |
| Call Number |
MA @ admin @ |
Serial |
2763 |
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| Author |
Semenov, M.A.; Pilkington-Bennett, S. |
| Title |
Validation of ELPIS baseline scenarios using ECA&D observed data |
Type |
Conference Article |
| Year |
2012 |
Publication |
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Issue |
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Pages |
4151-4152 |
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CropM |
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Geophysical Research Abstracts |
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14 |
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European GeoSciences Union (EGU), General Assembly 2012, 2012-04-22 to 2012-04-27 |
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no |
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MA @ admin @ |
Serial |
2820 |
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| Author |
Semenov, M.A.; Stratonovitch, P. |
| Title |
Application of evolutionary algorithms for model calibration |
Type |
Conference Article |
| Year |
2012 |
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CropM |
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Genetic and Evolutionary Computation Conference (GECCO 2012), Philadelphia, USA., 2012-07-07 to 2012-07-11 |
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Approved |
no |
| Call Number |
MA @ admin @ |
Serial |
2821 |
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