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Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations
BACKGROUND AND AIMS: Bioenergy is central for the future energy mix to mitigate climate change impacts; however, its intricate link with the water cycle calls for an evaluation of the carbon–water nexus in biomass production. The great challenge is to optimize trade-offs between carbon harvest and w...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821185/ https://www.ncbi.nlm.nih.gov/pubmed/30759181 http://dx.doi.org/10.1093/aob/mcz006 |
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author | Richard, Benjamin Richter, Goetz M Cerasuolo, Marianna Shield, Ian |
author_facet | Richard, Benjamin Richter, Goetz M Cerasuolo, Marianna Shield, Ian |
author_sort | Richard, Benjamin |
collection | PubMed |
description | BACKGROUND AND AIMS: Bioenergy is central for the future energy mix to mitigate climate change impacts; however, its intricate link with the water cycle calls for an evaluation of the carbon–water nexus in biomass production. The great challenge is to optimize trade-offs between carbon harvest and water use by choosing cultivars that combine low water use with high productivity. METHODS: Regional scenarios were simulated over a range of willow genotype × environment interactions for the major UK soil × climate variations with the process-based model LUCASS. Soil available water capacity (SAWC) ranged from 51 to 251 mm and weather represented the north-west (wet, cool), north-east (dry, cool), south-west (wet, warm) and south-east (dry, warm) of the UK. Scenario simulations were evaluated for small/open narrow-leaf (NL) versus large/closed broad-leaf (BL) willow canopy phenotypes using baseline (1965–89) and warmer recent (1990–2014) weather data. KEY RESULTS: The low productivity under baseline climate in the north could be compensated by choosing BL cultivars (e.g. ‘Endurance’). Recent warmer climate increased average productivity by 0.5–2.5 t ha(−1), especially in the north. The modern NL cultivar ‘Resolution’ had the smallest and most efficient water use. On marginal soils (SAWC <100 mm), yields remained below an economic threshold of 9 t ha(−1) more frequently under baseline than recent climate. In the drought-prone south-east, ‘Endurance’ yielded less than ‘Resolution’, which consumed on average 17 mm year(−1) less water. Assuming a planting area of 10 000 ha, in droughty years between 1.3 and 4.5 × 10(6) m(3) of water could be saved, with a small yield penalty, for ‘Resolution’. CONCLUSIONS: With an increase in air temperature and occasional water scarcities expected with climate change, high-yielding NL cultivars should be the preferred choice for sustainable use of marginal lands and reduced competition with agricultural food crops. |
format | Online Article Text |
id | pubmed-6821185 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-68211852019-11-04 Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations Richard, Benjamin Richter, Goetz M Cerasuolo, Marianna Shield, Ian Ann Bot Research In Context BACKGROUND AND AIMS: Bioenergy is central for the future energy mix to mitigate climate change impacts; however, its intricate link with the water cycle calls for an evaluation of the carbon–water nexus in biomass production. The great challenge is to optimize trade-offs between carbon harvest and water use by choosing cultivars that combine low water use with high productivity. METHODS: Regional scenarios were simulated over a range of willow genotype × environment interactions for the major UK soil × climate variations with the process-based model LUCASS. Soil available water capacity (SAWC) ranged from 51 to 251 mm and weather represented the north-west (wet, cool), north-east (dry, cool), south-west (wet, warm) and south-east (dry, warm) of the UK. Scenario simulations were evaluated for small/open narrow-leaf (NL) versus large/closed broad-leaf (BL) willow canopy phenotypes using baseline (1965–89) and warmer recent (1990–2014) weather data. KEY RESULTS: The low productivity under baseline climate in the north could be compensated by choosing BL cultivars (e.g. ‘Endurance’). Recent warmer climate increased average productivity by 0.5–2.5 t ha(−1), especially in the north. The modern NL cultivar ‘Resolution’ had the smallest and most efficient water use. On marginal soils (SAWC <100 mm), yields remained below an economic threshold of 9 t ha(−1) more frequently under baseline than recent climate. In the drought-prone south-east, ‘Endurance’ yielded less than ‘Resolution’, which consumed on average 17 mm year(−1) less water. Assuming a planting area of 10 000 ha, in droughty years between 1.3 and 4.5 × 10(6) m(3) of water could be saved, with a small yield penalty, for ‘Resolution’. CONCLUSIONS: With an increase in air temperature and occasional water scarcities expected with climate change, high-yielding NL cultivars should be the preferred choice for sustainable use of marginal lands and reduced competition with agricultural food crops. Oxford University Press 2019-10 2019-02-13 /pmc/articles/PMC6821185/ /pubmed/30759181 http://dx.doi.org/10.1093/aob/mcz006 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research In Context Richard, Benjamin Richter, Goetz M Cerasuolo, Marianna Shield, Ian Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title | Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title_full | Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title_fullStr | Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title_full_unstemmed | Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title_short | Optimizing the bioenergy water footprint by selecting SRC willow canopy phenotypes: regional scenario simulations |
title_sort | optimizing the bioenergy water footprint by selecting src willow canopy phenotypes: regional scenario simulations |
topic | Research In Context |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821185/ https://www.ncbi.nlm.nih.gov/pubmed/30759181 http://dx.doi.org/10.1093/aob/mcz006 |
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