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Critical carbon input to maintain current soil organic carbon stocks in global wheat systems
Soil organic carbon (SOC) dynamics in croplands is a crucial component of global carbon (C) cycle. Depending on local environmental conditions and management practices, typical C input is generally required to reduce or reverse C loss in agricultural soils. No studies have quantified the critical C...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4725856/ https://www.ncbi.nlm.nih.gov/pubmed/26759192 http://dx.doi.org/10.1038/srep19327 |
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author | Wang, Guocheng Luo, Zhongkui Han, Pengfei Chen, Huansheng Xu, Jingjing |
author_facet | Wang, Guocheng Luo, Zhongkui Han, Pengfei Chen, Huansheng Xu, Jingjing |
author_sort | Wang, Guocheng |
collection | PubMed |
description | Soil organic carbon (SOC) dynamics in croplands is a crucial component of global carbon (C) cycle. Depending on local environmental conditions and management practices, typical C input is generally required to reduce or reverse C loss in agricultural soils. No studies have quantified the critical C input for maintaining SOC at global scale with high resolution. Such information will provide a baseline map for assessing soil C dynamics under potential changes in management practices and climate, and thus enable development of management strategies to reduce C footprint from farm to regional scales. We used the soil C model RothC to simulate the critical C input rates needed to maintain existing soil C level at 0.1° × 0.1° resolution in global wheat systems. On average, the critical C input was estimated to be 2.0 Mg C ha(−1) yr(−1), with large spatial variability depending on local soil and climatic conditions. Higher C inputs are required in wheat system of central United States and western Europe, mainly due to the higher current soil C stocks present in these regions. The critical C input could be effectively estimated using a summary model driven by current SOC level, mean annual temperature, precipitation, and soil clay content. |
format | Online Article Text |
id | pubmed-4725856 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47258562016-01-28 Critical carbon input to maintain current soil organic carbon stocks in global wheat systems Wang, Guocheng Luo, Zhongkui Han, Pengfei Chen, Huansheng Xu, Jingjing Sci Rep Article Soil organic carbon (SOC) dynamics in croplands is a crucial component of global carbon (C) cycle. Depending on local environmental conditions and management practices, typical C input is generally required to reduce or reverse C loss in agricultural soils. No studies have quantified the critical C input for maintaining SOC at global scale with high resolution. Such information will provide a baseline map for assessing soil C dynamics under potential changes in management practices and climate, and thus enable development of management strategies to reduce C footprint from farm to regional scales. We used the soil C model RothC to simulate the critical C input rates needed to maintain existing soil C level at 0.1° × 0.1° resolution in global wheat systems. On average, the critical C input was estimated to be 2.0 Mg C ha(−1) yr(−1), with large spatial variability depending on local soil and climatic conditions. Higher C inputs are required in wheat system of central United States and western Europe, mainly due to the higher current soil C stocks present in these regions. The critical C input could be effectively estimated using a summary model driven by current SOC level, mean annual temperature, precipitation, and soil clay content. Nature Publishing Group 2016-01-13 /pmc/articles/PMC4725856/ /pubmed/26759192 http://dx.doi.org/10.1038/srep19327 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Wang, Guocheng Luo, Zhongkui Han, Pengfei Chen, Huansheng Xu, Jingjing Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title | Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title_full | Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title_fullStr | Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title_full_unstemmed | Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title_short | Critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
title_sort | critical carbon input to maintain current soil organic carbon stocks in global wheat systems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4725856/ https://www.ncbi.nlm.nih.gov/pubmed/26759192 http://dx.doi.org/10.1038/srep19327 |
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