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Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China
Phytolith‐occluded carbon (PhytOC) is an important long‐term stable carbon fraction in grassland ecosystems and plays a promising role in global carbon sequestration. Determination of the PhytOC traits of different plants in major grassland types is crucial for precisely assessing their phytolith ca...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7863665/ https://www.ncbi.nlm.nih.gov/pubmed/33598143 http://dx.doi.org/10.1002/ece3.7155 |
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author | Qi, Limin Sun, Tingyu Guo, Xudong Guo, Ying Li, Frank Yonghong |
author_facet | Qi, Limin Sun, Tingyu Guo, Xudong Guo, Ying Li, Frank Yonghong |
author_sort | Qi, Limin |
collection | PubMed |
description | Phytolith‐occluded carbon (PhytOC) is an important long‐term stable carbon fraction in grassland ecosystems and plays a promising role in global carbon sequestration. Determination of the PhytOC traits of different plants in major grassland types is crucial for precisely assessing their phytolith carbon sequestration potential. Precipitation is the predominant factor in controlling net primary productivity (NPP) and species composition of the semiarid steppe grasslands. We selected three representative steppe communities of the desert steppe, the dry typical steppe, and the wet typical steppe in Northern Grasslands of China along a precipitation gradient, to investigate their species composition, biomass production, and PhytOC content for quantifying its long‐term carbon sequestration potential. Our results showed that (a) the phytolith and PhytOC contents in plants differed significantly among species, with dominant grass and sedge species having relatively high contents, and the contents are significantly higher in the below‐ than the aboveground parts. (b) The phytolith contents of plant communities were 16.68, 17.94, and 15.85 g/kg in the above‐ and 86.44, 58.73, and 76.94 g/kg in the belowground biomass of the desert steppe, the dry typical steppe, and the wet typical steppe, respectively; and the PhytOC contents were 0.68, 0.48, and 0.59 g/kg in the above‐ and 1.11, 0.72, and 1.02 g/kg in the belowground biomass of the three steppe types. (c) Climatic factors affected phytolith and PhytOC production fluxes of steppe communities mainly through altering plant production, whereas their effects on phytolith and PhytOC contents were relatively small. Our study provides more evidence on the importance of incorporating belowground PhytOC production for estimating phytolith carbon sequestration potential and suggests it crucial to quantify belowground PhytOC production taking into account of plant perenniality and PhytOC deposition over multiple years. |
format | Online Article Text |
id | pubmed-7863665 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-78636652021-02-16 Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China Qi, Limin Sun, Tingyu Guo, Xudong Guo, Ying Li, Frank Yonghong Ecol Evol Original Research Phytolith‐occluded carbon (PhytOC) is an important long‐term stable carbon fraction in grassland ecosystems and plays a promising role in global carbon sequestration. Determination of the PhytOC traits of different plants in major grassland types is crucial for precisely assessing their phytolith carbon sequestration potential. Precipitation is the predominant factor in controlling net primary productivity (NPP) and species composition of the semiarid steppe grasslands. We selected three representative steppe communities of the desert steppe, the dry typical steppe, and the wet typical steppe in Northern Grasslands of China along a precipitation gradient, to investigate their species composition, biomass production, and PhytOC content for quantifying its long‐term carbon sequestration potential. Our results showed that (a) the phytolith and PhytOC contents in plants differed significantly among species, with dominant grass and sedge species having relatively high contents, and the contents are significantly higher in the below‐ than the aboveground parts. (b) The phytolith contents of plant communities were 16.68, 17.94, and 15.85 g/kg in the above‐ and 86.44, 58.73, and 76.94 g/kg in the belowground biomass of the desert steppe, the dry typical steppe, and the wet typical steppe, respectively; and the PhytOC contents were 0.68, 0.48, and 0.59 g/kg in the above‐ and 1.11, 0.72, and 1.02 g/kg in the belowground biomass of the three steppe types. (c) Climatic factors affected phytolith and PhytOC production fluxes of steppe communities mainly through altering plant production, whereas their effects on phytolith and PhytOC contents were relatively small. Our study provides more evidence on the importance of incorporating belowground PhytOC production for estimating phytolith carbon sequestration potential and suggests it crucial to quantify belowground PhytOC production taking into account of plant perenniality and PhytOC deposition over multiple years. John Wiley and Sons Inc. 2021-01-04 /pmc/articles/PMC7863665/ /pubmed/33598143 http://dx.doi.org/10.1002/ece3.7155 Text en © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Qi, Limin Sun, Tingyu Guo, Xudong Guo, Ying Li, Frank Yonghong Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title | Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title_full | Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title_fullStr | Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title_full_unstemmed | Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title_short | Phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China |
title_sort | phytolith‐occluded carbon sequestration potential in three major steppe types along a precipitation gradient in northern china |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7863665/ https://www.ncbi.nlm.nih.gov/pubmed/33598143 http://dx.doi.org/10.1002/ece3.7155 |
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