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JRC 2014, p. 75. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Camia et al. 2021, p. 7. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Cowie, Annette L.; Berndes, Göran; Bentsen, Niclas Scott; Brandão, Miguel; Cherubini, Francesco; Egnell, Gustaf; George, Brendan; Gustavsson, Leif; Hanewinkel, Marc; Harris, Zoe M.; Johnsson, Filip; Junginger, Martin; Kline, Keith L.; Koponen, Kati; Koppejan, Jaap (2021). "Applying a science-based systems perspective to dispel misconceptions about climate effects of forest bioenergy". GCB Bioenergy. 13 (8): 1210–1231. Bibcode:2021GCBBi..13.1210C. doi:10.1111/gcbb.12844. hdl:10044/1/89123.
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Correa, Diego F.; Beyer, Hawthorne L.; Fargione, Joseph E.; Hill, Jason D.; Possingham, Hugh P.; Thomas-Hall, Skye R.; Schenk, Peer M. (June 2019). "Towards the implementation of sustainable biofuel production systems". Renewable and Sustainable Energy Reviews. 107: 250–263. Bibcode:2019RSERv.107..250C. doi:10.1016/j.rser.2019.03.005.
Camia et al. 2021, p. 83. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Camia et al. 2021, p. 100. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
JRC 2014, p. 41, table 2. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Lamers & Junginger 2013, p. 380. Lamers, Patrick; Junginger, Martin (July 2013). "The 'debt' is in the detail: A synthesis of recent temporal forest carbon analyses on woody biomass for energy". Biofuels, Bioproducts and Biorefining. 7 (4): 373–385. doi:10.1002/bbb.1407.
JRC 2014, p. 41. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Camia et al. 2021, pp. 32–33. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Stephenson et al. 2014, pp. 2–3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
Camia et al. 2021, p. 107. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Camia et al. 2021, p. 146. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
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Camia et al. 2021, pp. 8–149. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Camia et al. 2021, pp. 125–147. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
Camia et al. 2021, pp. 8–147. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
JRC 2014, pp. 23, 51–52. Note that the JRC use the term "payback time" in the sense of "parity time" as defined in Carbon accounting principles above. See JRC 2014, p. 16. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
JRC 2014, p. 69. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
See for instance Camia et al. 2021, pp. 86, 100. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2.
JRC 2014, p. 75. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Camia et al. 2021, p. 93. Mubareka, Giuntoli & Grassi 2021, pp. 8–9. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2. Mubareka, Sarah; Giuntoli, Jacopo; Grassi, Giacomo (2021). JRC report on forest bioenergy(PDF). European Commission.
JRC 2014, p. 75. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Camia et al. 2021, p. 143. See also JRC 2014, pp. 16–17, 43–44. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
Lamers & Junginger 2013, p. 379. Lamers, Patrick; Junginger, Martin (July 2013). "The 'debt' is in the detail: A synthesis of recent temporal forest carbon analyses on woody biomass for energy". Biofuels, Bioproducts and Biorefining. 7 (4): 373–385. doi:10.1002/bbb.1407.
JRC 2014, p. 17. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
JRC 2014, p. 34. Note that the JRC use the term "payback time" in the sense of "parity time" as defined in Carbon accounting principles above. See JRC 2014, p. 16. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9. Agostini, Alessandro; Giuntoli, Jacopo; Boulamanti, Aikaterini (2014). Marelli, Luisa (ed.). Carbon accounting of forest bioenergy: Conclusions and recommendations from a critical literature review. Publications Office. doi:10.2788/29442. ISBN978-92-79-25100-9.
"Any soil disturbance, such as ploughing and cultivation, is likely to result in short-term respiration losses of soil organic carbon, decomposed by stimulated soil microbe populations (Cheng, 2009; Kuzyakov, 2010). Annual disturbance under arable cropping repeats this year after year resulting in reduced SOC levels. Perennial agricultural systems, such as grassland, have time to replace their infrequent disturbance losses which can result in higher steady-state soil carbon contents (Gelfand et al., 2011; Zenone et al., 2013)." McCalmont et al. 2017, p. 493. McCalmont, Jon P.; Hastings, Astley; McNamara, Niall P.; Richter, Goetz M.; Robson, Paul; Donnison, Iain S.; Clifton-Brown, John (March 2017). "Environmental costs and benefits of growing Miscanthus for bioenergy in the UK". GCB Bioenergy. 9 (3): 489–507. Bibcode:2017GCBBi...9..489M. doi:10.1111/gcbb.12294. PMC5340280. PMID28331551.
Stephenson et al. 2014, p. 3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
In EU legislation, biofuel is defined as: "Liquid or gaseous fuel for transport produced from biomass." See European Commission 2018a. European Commission (2018a). "Biofuel". European Commission Glossary.
fao.org
Recalculated from a total production of 43678925 tonnes wood pellets (FAO 2020), with 17 GJ/t energy content.
Recalculated from a total production of 265212933 m3 wood chips (FAO 2020), with 3.1 GJ/m3 energy content.
Stephenson et al. 2014, pp. 2–3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
Stephenson et al. 2014, p. 3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
Correa, Diego F.; Beyer, Hawthorne L.; Fargione, Joseph E.; Hill, Jason D.; Possingham, Hugh P.; Thomas-Hall, Skye R.; Schenk, Peer M. (June 2019). "Towards the implementation of sustainable biofuel production systems". Renewable and Sustainable Energy Reviews. 107: 250–263. Bibcode:2019RSERv.107..250C. doi:10.1016/j.rser.2019.03.005.
Stephenson et al. 2014, pp. 2–3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
"Any soil disturbance, such as ploughing and cultivation, is likely to result in short-term respiration losses of soil organic carbon, decomposed by stimulated soil microbe populations (Cheng, 2009; Kuzyakov, 2010). Annual disturbance under arable cropping repeats this year after year resulting in reduced SOC levels. Perennial agricultural systems, such as grassland, have time to replace their infrequent disturbance losses which can result in higher steady-state soil carbon contents (Gelfand et al., 2011; Zenone et al., 2013)." McCalmont et al. 2017, p. 493. McCalmont, Jon P.; Hastings, Astley; McNamara, Niall P.; Richter, Goetz M.; Robson, Paul; Donnison, Iain S.; Clifton-Brown, John (March 2017). "Environmental costs and benefits of growing Miscanthus for bioenergy in the UK". GCB Bioenergy. 9 (3): 489–507. Bibcode:2017GCBBi...9..489M. doi:10.1111/gcbb.12294. PMC5340280. PMID28331551.
Stephenson et al. 2014, p. 3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
Camia et al. 2021, p. 93. Mubareka, Giuntoli & Grassi 2021, pp. 8–9. Camia, Andrea; Giuntoli, Jacopo; Jonsson, Ragnar; Robert, Nicolas; Cazzaniga, Noemi E; Jasinevičius, Gedimas; Avitabile, Valerio; Grassi, Giacomo; Barredo, José I; Mubareka, Sarah (2021). The use of woody biomass for energy production in the EU. Publications Office. doi:10.2760/831621. ISBN978-92-76-27867-2. Mubareka, Sarah; Giuntoli, Jacopo; Grassi, Giacomo (2021). JRC report on forest bioenergy(PDF). European Commission.
Stephenson et al. 2014, pp. 2–3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
"Any soil disturbance, such as ploughing and cultivation, is likely to result in short-term respiration losses of soil organic carbon, decomposed by stimulated soil microbe populations (Cheng, 2009; Kuzyakov, 2010). Annual disturbance under arable cropping repeats this year after year resulting in reduced SOC levels. Perennial agricultural systems, such as grassland, have time to replace their infrequent disturbance losses which can result in higher steady-state soil carbon contents (Gelfand et al., 2011; Zenone et al., 2013)." McCalmont et al. 2017, p. 493. McCalmont, Jon P.; Hastings, Astley; McNamara, Niall P.; Richter, Goetz M.; Robson, Paul; Donnison, Iain S.; Clifton-Brown, John (March 2017). "Environmental costs and benefits of growing Miscanthus for bioenergy in the UK". GCB Bioenergy. 9 (3): 489–507. Bibcode:2017GCBBi...9..489M. doi:10.1111/gcbb.12294. PMC5340280. PMID28331551.
Stephenson et al. 2014, p. 3. Stephenson, N. L.; Das, A. J.; Condit, R.; Russo, S. E.; Baker, P. J.; Beckman, N. G.; Coomes, D. A.; Lines, E. R.; Morris, W. K.; Rüger, N.; Álvarez, E.; Blundo, C.; Bunyavejchewin, S.; Chuyong, G.; Davies, S. J.; Duque, á.; Ewango, C. N.; Flores, O.; Franklin, J. F.; Grau, H. R.; Hao, Z.; Harmon, M. E.; Hubbell, S. P.; Kenfack, D.; Lin, Y.; Makana, J.-R.; Malizia, A.; Malizia, L. R.; Pabst, R. J.; Pongpattananurak, N.; Su, S.-H.; Sun, I-F.; Tan, S.; Thomas, D.; van Mantgem, P. J.; Wang, X.; Wiser, S. K.; Zavala, M. A. (March 2014). "Rate of tree carbon accumulation increases continuously with tree size". Nature. 507 (7490): 90–93. Bibcode:2014Natur.507...90S. doi:10.1038/nature12914. hdl:11336/12757. PMID24429523.
"Any soil disturbance, such as ploughing and cultivation, is likely to result in short-term respiration losses of soil organic carbon, decomposed by stimulated soil microbe populations (Cheng, 2009; Kuzyakov, 2010). Annual disturbance under arable cropping repeats this year after year resulting in reduced SOC levels. Perennial agricultural systems, such as grassland, have time to replace their infrequent disturbance losses which can result in higher steady-state soil carbon contents (Gelfand et al., 2011; Zenone et al., 2013)." McCalmont et al. 2017, p. 493. McCalmont, Jon P.; Hastings, Astley; McNamara, Niall P.; Richter, Goetz M.; Robson, Paul; Donnison, Iain S.; Clifton-Brown, John (March 2017). "Environmental costs and benefits of growing Miscanthus for bioenergy in the UK". GCB Bioenergy. 9 (3): 489–507. Bibcode:2017GCBBi...9..489M. doi:10.1111/gcbb.12294. PMC5340280. PMID28331551.