Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study
The potential of modified spring barley crops with improved nitrogen (N) use efficiency to reduce nitrogen (N) leaching and to increase soil organic carbon (SOC) storage was assessed at the regional scale. This was done using simulation model applications designed for reporting according to the Helc...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2017-10-01
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| Series: | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/09064710.2017.1324041 |
| _version_ | 1827817144332582912 |
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| author | Henrik Eckersten Martin Bolinder Holger Johnsson Thomas Kätterer Kristina Mårtensson Dennis Collentine Pernilla Tidåker Håkan Marstorp |
| author_facet | Henrik Eckersten Martin Bolinder Holger Johnsson Thomas Kätterer Kristina Mårtensson Dennis Collentine Pernilla Tidåker Håkan Marstorp |
| author_sort | Henrik Eckersten |
| collection | DOAJ |
| description | The potential of modified spring barley crops with improved nitrogen (N) use efficiency to reduce nitrogen (N) leaching and to increase soil organic carbon (SOC) storage was assessed at the regional scale. This was done using simulation model applications designed for reporting according to the Helcom (Helsinki Commission) and Kyoto protocols. Using model simulations based on modified crops N dynamics and SOC were assessed for three agro-ecological regions (latitudes ranging 55°20′–60°40′ N) in Sweden over a 20-year period. The modified N use properties of spring barley were implemented in the SOILNDB model (simulating soil C, N, water and heat, and plant N dynamics) by changing the parameters for root N uptake efficiency and plant N demand within a range given by previous model applications to different crops. A doubling of the daily N uptake efficiency and increased N demand (by ca 30%) reduced N leaching by 24%–31%, increased plant N content by 9%–12%, depending on region. The effects of the modified crop on SOC was simulated with the ICBM model, resulting in an increased SOC content (0–25 cm depth) by 57–79 kg C ha−1 y−1. The results suggest that a modified crop might reduce N leaching from spring barley area, in a range similar to the targets of relevant environmental protection directives, a result which held more in the northern than southern regions. The simulated SOC increase on a hectare basis was highest for the central region and least for the most northern region. For the total agricultural area the share of spring barley area was small and more crops would need to be modified to reach the emission reduction targets. |
| first_indexed | 2024-03-12T00:30:14Z |
| format | Article |
| id | doaj.art-7683ec23a2a54861aa8a1ef1593319ef |
| institution | Directory Open Access Journal |
| issn | 0906-4710 1651-1913 |
| language | English |
| last_indexed | 2024-03-12T00:30:14Z |
| publishDate | 2017-10-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| spelling | doaj.art-7683ec23a2a54861aa8a1ef1593319ef2023-09-15T10:21:31ZengTaylor & Francis GroupActa Agriculturae Scandinavica. Section B, Soil and Plant Science0906-47101651-19132017-10-0167761562710.1080/09064710.2017.13240411324041Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case studyHenrik Eckersten0Martin Bolinder1Holger Johnsson2Thomas Kätterer3Kristina Mårtensson4Dennis Collentine5Pernilla Tidåker6Håkan Marstorp7Swedish University of Agricultural SciencesSwedish University of Agricultural SciencesSwedish University of Agricultural SciencesSwedish University of Agricultural SciencesSwedish University of Agricultural SciencesSwedish University of Agricultural SciencesSwedish Institute of Agricultural and Environmental Engineering, Research Institutes of Sweden (RISE)Swedish University of Agricultural SciencesThe potential of modified spring barley crops with improved nitrogen (N) use efficiency to reduce nitrogen (N) leaching and to increase soil organic carbon (SOC) storage was assessed at the regional scale. This was done using simulation model applications designed for reporting according to the Helcom (Helsinki Commission) and Kyoto protocols. Using model simulations based on modified crops N dynamics and SOC were assessed for three agro-ecological regions (latitudes ranging 55°20′–60°40′ N) in Sweden over a 20-year period. The modified N use properties of spring barley were implemented in the SOILNDB model (simulating soil C, N, water and heat, and plant N dynamics) by changing the parameters for root N uptake efficiency and plant N demand within a range given by previous model applications to different crops. A doubling of the daily N uptake efficiency and increased N demand (by ca 30%) reduced N leaching by 24%–31%, increased plant N content by 9%–12%, depending on region. The effects of the modified crop on SOC was simulated with the ICBM model, resulting in an increased SOC content (0–25 cm depth) by 57–79 kg C ha−1 y−1. The results suggest that a modified crop might reduce N leaching from spring barley area, in a range similar to the targets of relevant environmental protection directives, a result which held more in the northern than southern regions. The simulated SOC increase on a hectare basis was highest for the central region and least for the most northern region. For the total agricultural area the share of spring barley area was small and more crops would need to be modified to reach the emission reduction targets.http://dx.doi.org/10.1080/09064710.2017.1324041soilndb modelicbm modelnational assessmentcarbon and nitrogen cyclinggmo |
| spellingShingle | Henrik Eckersten Martin Bolinder Holger Johnsson Thomas Kätterer Kristina Mårtensson Dennis Collentine Pernilla Tidåker Håkan Marstorp Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study Acta Agriculturae Scandinavica. Section B, Soil and Plant Science soilndb model icbm model national assessment carbon and nitrogen cycling gmo |
| title | Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study |
| title_full | Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study |
| title_fullStr | Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study |
| title_full_unstemmed | Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study |
| title_short | Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency – A regional case study |
| title_sort | nitrogen leaching and soil organic carbon sequestration of a barley crop with improved n use efficiency a regional case study |
| topic | soilndb model icbm model national assessment carbon and nitrogen cycling gmo |
| url | http://dx.doi.org/10.1080/09064710.2017.1324041 |
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