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Author |
Pirttioja, N.; Fronzek, S.; Rötter, R.P.; Carter, T.R. |
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Title |
Probabilistic assessment of crop adaptation options under a changing climate |
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Year |
2012 |
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CropM |
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Second Nordic International Conference on Climate Change Adaptation, 2012-08-29 to 2012-08-30 |
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Call Number |
MA @ admin @ |
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2724 |
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Author |
Pirttioja, N.; Fronzek, S.; Rötter, R.P.; Carter, T.R. |
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Title |
Simulating Adaptive Management Using Impact Models in a Risk Framework |
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2012 |
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CropM |
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Adaptation Futures. Tucson, AZ, USA, 2012-05-29 to 2012-05-31 |
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MA @ admin @ |
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2725 |
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Author |
Porter, J.R.; Soussana, J.-F.; Fereres, E.; Long, S.; Mohren, F.; Peltonen-Sainio, P.; von Braun, J. |
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Title |
European Perspectives: An Agronomic Science Plan for Food Security in a Changing Climate |
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Book Chapter |
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Year |
2012 |
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CropM |
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Co-Published With Imperial College Press |
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Hillel, D.; Rosenzweig, C. |
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Handbook of Climate Change and Agroecosystems: Global and Regional Aspects and Implications |
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ICP Series on Climate Change Impacts, Adaptation, |
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MA @ admin @ |
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2732 |
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Mueller, L.; Schindler, U.; Shepherd, T.G.; Ball, B.C.; Smolentseva, E.; Hu, C.; Hennings, V.; Schad, P.; Rogasik, J.; Zeitz, J.; Schlindwein, S.L.; Behrendt, A.; Helming, K.; Eulenstein, F. |
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Title |
A framework for assessing agricultural soil quality on a global scale |
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Journal Article |
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2012 |
Publication |
Archives of Agronomy and Soil Science |
Abbreviated Journal |
Archives of Agronomy and Soil Science |
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58 |
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sup1 |
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S76-S82 |
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Keywords |
soil quality; indicators; muencheberg soil quality rating |
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Abstract |
This paper provides information about a novel approach of rating agricultural soil quality (SQ) and crop yield potentials consistently over a range of spatial scales. The Muencheberg Soil Quality Rating is an indicator-based straightforward overall assessment method of agricultural SQ. It is a framework covering aspects of soil texture, structure, topography and climate which is based on 8 basic indicators and more than 12 hazard indicators. Ratings are performed by visual methods of soil evaluation. A field manual is then used to provide ratings from tables based on indicator thresholds. Finally, overall rating scores are given, ranging from 0 (worst) to 100 (best) to characterise crop yield potentials. The current approach is valid for grassland and cropland. Field tests in several countries confirmed the practicability and reliability of the method. At field scale, soil structure is a crucial, management induced criterion of agricultural SQ. At the global scale, climate controlled hazard indicators of drought risk and soil thermal regime are crucial for SQ and crop yield potentials. Final rating scores are well correlated with crop yields. We conclude that this system could be evolved for ranking and controlling agricultural SQ on a global scale. |
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English |
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ISSN |
0365-0340 |
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Notes |
CropM, TradeM, ftnotmacsur |
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Call Number |
MA @ admin @ |
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4589 |
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Author |
Bennetzen, E.H.; Smith, P.; Soussana, J.-F.; Porter, J.R. |
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Title |
Identity-based estimation of greenhouse gas emissions from crop production: case study from Denmark |
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Journal Article |
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Year |
2012 |
Publication |
European Journal of Agronomy |
Abbreviated Journal |
European Journal of Agronomy |
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Volume |
41 |
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66-72 |
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Keywords |
kaya identity; kaya-porter identity; crop production; greenhouse gas emission; energy intensity; mitigation; food system; agriculture; mitigation; energy; opportunities; inventory; europe; policy; land |
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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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English |
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Series Volume |
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ISSN |
1161-0301 |
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Notes |
CropM, ftnotmacsur |
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MA @ admin @ |
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4581 |
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