Estimating global warming potential for agricultural landscapes with minimal field data and cost
Greenhouse gas (GHG) emissions from agriculture comprise 10-12% of anthropocentric global emissions; and 76% of the agricultural emissions are generated in the developing world. Landscape GHG accounting is an effective way to efficiently develop baseline emissions and appropriate mitigation approach...
| Main Authors: | , , , |
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| Format: | Artículo preliminar |
| Language: | Inglés |
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CGIAR Research Program on Climate Change, Agriculture and Food Security
2015
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| Online Access: | https://hdl.handle.net/10568/69447 |
| _version_ | 1855537012060192768 |
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| author | Ingraham, P. Bhatta, Gopal Datt Salas W Wollenberg, Eva Karoline |
| author_browse | Bhatta, Gopal Datt Ingraham, P. Salas W Wollenberg, Eva Karoline |
| author_facet | Ingraham, P. Bhatta, Gopal Datt Salas W Wollenberg, Eva Karoline |
| author_sort | Ingraham, P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Greenhouse gas (GHG) emissions from agriculture comprise 10-12% of anthropocentric global emissions; and 76% of the agricultural emissions are generated in the developing world. Landscape GHG accounting is an effective way to efficiently develop baseline emissions and appropriate mitigation approaches. In a 9,736-hectare case study area dominated by rice and wheat in the Karnal district of Haryana state, India, the authors used a low-cost landscape agricultural GHG accounting method with limited fieldwork, remote sensing, and biogeochemical modeling. We used the DeNitrification-DeComposition (DNDC) model software to simulate crop growth and carbon and nitrogen cycling to estimate net GHG emissions, with information based on the mapping of cropping patterns over time using multi- resolution and multi-temporal optical remote sensing imagery. We estimated a mean net emission of 78,620 tCO2e/yr (tons of carbon dioxide equivalents per year) with a 95% confidence interval of 51,212-106,028 tCO2e/yr based on uncertainties in our crop mapping and soil data. A modeling sensitivity analysis showed soil clay fraction, soil organic carbon fraction, soil density, and nitrogen amendments to be among the most sensitive factors, and therefore critical to capture in field surveys. We recommend a multi-phase approach to increase efficiency and reduce cost in GHG accounting. Field campaigns and aspects of remote sensing image characteristics can be optimized for targeted landscapes through solid background research. An appropriate modeling approach can be selected based on crop and soil characteristics. Soil data in developing world landscapes remain a significant source of uncertainty for studies like these and should remain a key research and data development effort. |
| format | Artículo preliminar |
| id | CGSpace69447 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | CGIAR Research Program on Climate Change, Agriculture and Food Security |
| publisherStr | CGIAR Research Program on Climate Change, Agriculture and Food Security |
| record_format | dspace |
| spelling | CGSpace694472024-01-23T12:04:52Z Estimating global warming potential for agricultural landscapes with minimal field data and cost Ingraham, P. Bhatta, Gopal Datt Salas W Wollenberg, Eva Karoline remote sensing climate change mitigation biochemical greenhouse gases Greenhouse gas (GHG) emissions from agriculture comprise 10-12% of anthropocentric global emissions; and 76% of the agricultural emissions are generated in the developing world. Landscape GHG accounting is an effective way to efficiently develop baseline emissions and appropriate mitigation approaches. In a 9,736-hectare case study area dominated by rice and wheat in the Karnal district of Haryana state, India, the authors used a low-cost landscape agricultural GHG accounting method with limited fieldwork, remote sensing, and biogeochemical modeling. We used the DeNitrification-DeComposition (DNDC) model software to simulate crop growth and carbon and nitrogen cycling to estimate net GHG emissions, with information based on the mapping of cropping patterns over time using multi- resolution and multi-temporal optical remote sensing imagery. We estimated a mean net emission of 78,620 tCO2e/yr (tons of carbon dioxide equivalents per year) with a 95% confidence interval of 51,212-106,028 tCO2e/yr based on uncertainties in our crop mapping and soil data. A modeling sensitivity analysis showed soil clay fraction, soil organic carbon fraction, soil density, and nitrogen amendments to be among the most sensitive factors, and therefore critical to capture in field surveys. We recommend a multi-phase approach to increase efficiency and reduce cost in GHG accounting. Field campaigns and aspects of remote sensing image characteristics can be optimized for targeted landscapes through solid background research. An appropriate modeling approach can be selected based on crop and soil characteristics. Soil data in developing world landscapes remain a significant source of uncertainty for studies like these and should remain a key research and data development effort. 2015-12-31 2015-12-31T11:14:05Z 2015-12-31T11:14:05Z Working Paper https://hdl.handle.net/10568/69447 en Open Access application/pdf CGIAR Research Program on Climate Change, Agriculture and Food Security Ingraham P, Bhatta G, Salas W, Wollenberg E. 2015. Estimating Global warming potential for agricultural landscapes with minimal field data and cost. Working Paper No.142. Copenhagen, Denmark: CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS). |
| spellingShingle | remote sensing climate change mitigation biochemical greenhouse gases Ingraham, P. Bhatta, Gopal Datt Salas W Wollenberg, Eva Karoline Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title | Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title_full | Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title_fullStr | Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title_full_unstemmed | Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title_short | Estimating global warming potential for agricultural landscapes with minimal field data and cost |
| title_sort | estimating global warming potential for agricultural landscapes with minimal field data and cost |
| topic | remote sensing climate change mitigation biochemical greenhouse gases |
| url | https://hdl.handle.net/10568/69447 |
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