Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China
The alterations of plant composition and diversity pose a threat to the stability of the carbon pool in boreal peatland under climate change. We collected the samples of three plant functional types (deciduous shrubs, evergreen shrubs, and sedge) in seven permafrost peatlands of the Great Hing’an Mo...
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ftdoajarticles:oai:doaj.org/article:d039c0b2859e4a24beb9168c2c925db8 2023-05-15T17:57:43+02:00 Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China Shujie Wang Xianwei Wang Xiaoxin Sun Guobao Ma Yu Du Jingyi Jiang 2022-12-01T00:00:00Z https://doi.org/10.3389/fevo.2022.1071947 https://doaj.org/article/d039c0b2859e4a24beb9168c2c925db8 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fevo.2022.1071947/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.1071947 https://doaj.org/article/d039c0b2859e4a24beb9168c2c925db8 Frontiers in Ecology and Evolution, Vol 10 (2022) boreal peatland ecological stoichiometry plant functional types stable carbon isotopic 15N natural abundance Evolution QH359-425 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.3389/fevo.2022.1071947 2022-12-30T20:55:25Z The alterations of plant composition and diversity pose a threat to the stability of the carbon pool in boreal peatland under climate change. We collected the samples of three plant functional types (deciduous shrubs, evergreen shrubs, and sedge) in seven permafrost peatlands of the Great Hing’an Mountains, China, and measured the properties of total carbon (TC), nitrogen (TN), and phosphorus (TP), their stoichiometric ratios (C:N, C:P, and N:P), and the stable isotope values (δ13C and δ15N) of six tissues (ranging from leaves to roots). For TC, TN, and TP, the contents had an average of 470.69 ± 1.56, 8.03 ± 0.23, and 1.71 ± 0.61 mg·g−1, respectively. TC contents of sedge were lower than those of shrubs for the whole plant. The allocations of N and P to shrub leaves were higher than to stems and roots. There was a similar trend of TN and TP contents, and stoichiometric ratios from leaves to roots between deciduous shrubs and evergreen shrubs. Shrubs and sedge have similar C: N in leaves and fine roots, while leaves of sedge C:P and N:P ratios were higher than shrubs, mainly showed that sedge is N and P co-limitation and shrubs are N limitation. The values of δ13C and δ15N were significantly higher in leaves and roots of sedge than those of shrubs, which means shrubs have higher nutrient acquisition strategies. These results support the shrubs are expanding in the boreal peatland under climate warming through nutrient competition. TC contents of all deciduous shrubs and sedge tissues were positively linear correlated to MAT and the values of δ13C and δ15N in sedge had significant relationships with MAT and MAP. Our results imply warming can increase plant photosynthesis in boreal peatland, and sedge was more sensitive to climate change. These findings would be helpful to understanding the responses of different plant tissues to climate changes in permafrost peatland. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Frontiers in Ecology and Evolution 10 |
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ftdoajarticles |
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English |
topic |
boreal peatland ecological stoichiometry plant functional types stable carbon isotopic 15N natural abundance Evolution QH359-425 Ecology QH540-549.5 |
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boreal peatland ecological stoichiometry plant functional types stable carbon isotopic 15N natural abundance Evolution QH359-425 Ecology QH540-549.5 Shujie Wang Xianwei Wang Xiaoxin Sun Guobao Ma Yu Du Jingyi Jiang Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
topic_facet |
boreal peatland ecological stoichiometry plant functional types stable carbon isotopic 15N natural abundance Evolution QH359-425 Ecology QH540-549.5 |
description |
The alterations of plant composition and diversity pose a threat to the stability of the carbon pool in boreal peatland under climate change. We collected the samples of three plant functional types (deciduous shrubs, evergreen shrubs, and sedge) in seven permafrost peatlands of the Great Hing’an Mountains, China, and measured the properties of total carbon (TC), nitrogen (TN), and phosphorus (TP), their stoichiometric ratios (C:N, C:P, and N:P), and the stable isotope values (δ13C and δ15N) of six tissues (ranging from leaves to roots). For TC, TN, and TP, the contents had an average of 470.69 ± 1.56, 8.03 ± 0.23, and 1.71 ± 0.61 mg·g−1, respectively. TC contents of sedge were lower than those of shrubs for the whole plant. The allocations of N and P to shrub leaves were higher than to stems and roots. There was a similar trend of TN and TP contents, and stoichiometric ratios from leaves to roots between deciduous shrubs and evergreen shrubs. Shrubs and sedge have similar C: N in leaves and fine roots, while leaves of sedge C:P and N:P ratios were higher than shrubs, mainly showed that sedge is N and P co-limitation and shrubs are N limitation. The values of δ13C and δ15N were significantly higher in leaves and roots of sedge than those of shrubs, which means shrubs have higher nutrient acquisition strategies. These results support the shrubs are expanding in the boreal peatland under climate warming through nutrient competition. TC contents of all deciduous shrubs and sedge tissues were positively linear correlated to MAT and the values of δ13C and δ15N in sedge had significant relationships with MAT and MAP. Our results imply warming can increase plant photosynthesis in boreal peatland, and sedge was more sensitive to climate change. These findings would be helpful to understanding the responses of different plant tissues to climate changes in permafrost peatland. |
format |
Article in Journal/Newspaper |
author |
Shujie Wang Xianwei Wang Xiaoxin Sun Guobao Ma Yu Du Jingyi Jiang |
author_facet |
Shujie Wang Xianwei Wang Xiaoxin Sun Guobao Ma Yu Du Jingyi Jiang |
author_sort |
Shujie Wang |
title |
Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
title_short |
Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
title_full |
Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
title_fullStr |
Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
title_full_unstemmed |
Stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, Northeast China |
title_sort |
stoichiometry and stable isotopes of plants and their response to environmental factors in boreal peatland, northeast china |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fevo.2022.1071947 https://doaj.org/article/d039c0b2859e4a24beb9168c2c925db8 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Frontiers in Ecology and Evolution, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fevo.2022.1071947/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.1071947 https://doaj.org/article/d039c0b2859e4a24beb9168c2c925db8 |
op_doi |
https://doi.org/10.3389/fevo.2022.1071947 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
10 |
_version_ |
1766166206208802816 |