Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary

Temperature sensitivity (Q10) is important to reveal carbon decomposition responding to climate change. It’s remains limited to understand how Q10 of anaerobic soil organic matter (SOM) decomposition is regulated by soil property in various wetlands with distinct hydrological characteristics. In the...

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Autores principales: Yue Liu, Jisong Yang, Kai Ning, Andong Wang, Qiuxian Wang, Xuehong Wang, Shuwen Wang, Zhenbo Lv, Yajie Zhao, Junbao Yu
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:c98229808887400fb08aa206c8380fa22021-12-01T04:45:42ZTemperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary1470-160X10.1016/j.ecolind.2021.107409https://doaj.org/article/c98229808887400fb08aa206c8380fa22021-05-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21000741https://doaj.org/toc/1470-160XTemperature sensitivity (Q10) is important to reveal carbon decomposition responding to climate change. It’s remains limited to understand how Q10 of anaerobic soil organic matter (SOM) decomposition is regulated by soil property in various wetlands with distinct hydrological characteristics. In the present study, samples of soil at the depths of 0–10 cm, 10–20 cm and 20–30 cm were collected in three typical Phragmites australis marshes, including a freshwater marsh (FPa), a no-tidal salt marsh (NTPa) and a tidal salt marsh (TPa), in the Yellow River estuary. The soil samples were incubated at 10 °C, 20 °C and 30 °C, respectively, to determine the rates of anaerobic CO2 production, Q10 values, and their relations to soil properties. Over 70-d incubation, temperature rise significantly increased the mean rates by 70%–136% (from 10 °C to 20 °C) and 64%–142% (from 20 °C to 30 °C) among the marshes, with the mean Q10 values ranging from 1.61 to 2.66. The rates of CO2 production and Q10 values were significantly affected by wetland type and soil depth. Among marshes, the Q10 of the FPa and NTPa soils was higher than that of the TPa soil (for 0–10 cm and 10–20 cm but for 20–30 cm); along soil depths, the Q10 of the top soil was higher than that of the subsoil (for FPa and NTPa but for TPa). Q10 was affected by total organic carbon (TOC), salinity and pH, and the effects were different with marshes. TOC was a main factor regulating Q10 for the freshwater and the no-tidal salt marshes, while salinity and pH were main factors for the tidal salt marsh. The findings highlight an interactive mechanism of soil property and tidal underlying the response of SOM decomposition to temperature change in estuarine wetlands.Yue LiuJisong YangKai NingAndong WangQiuxian WangXuehong WangShuwen WangZhenbo LvYajie ZhaoJunbao YuElsevierarticleTemperature sensitivityAnaerobic SOM decompositionPhragmites australis marshSoil propertyEstuarine wetlandEcologyQH540-549.5ENEcological Indicators, Vol 124, Iss , Pp 107409- (2021)
institution DOAJ
collection DOAJ
language EN
topic Temperature sensitivity
Anaerobic SOM decomposition
Phragmites australis marsh
Soil property
Estuarine wetland
Ecology
QH540-549.5
spellingShingle Temperature sensitivity
Anaerobic SOM decomposition
Phragmites australis marsh
Soil property
Estuarine wetland
Ecology
QH540-549.5
Yue Liu
Jisong Yang
Kai Ning
Andong Wang
Qiuxian Wang
Xuehong Wang
Shuwen Wang
Zhenbo Lv
Yajie Zhao
Junbao Yu
Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
description Temperature sensitivity (Q10) is important to reveal carbon decomposition responding to climate change. It’s remains limited to understand how Q10 of anaerobic soil organic matter (SOM) decomposition is regulated by soil property in various wetlands with distinct hydrological characteristics. In the present study, samples of soil at the depths of 0–10 cm, 10–20 cm and 20–30 cm were collected in three typical Phragmites australis marshes, including a freshwater marsh (FPa), a no-tidal salt marsh (NTPa) and a tidal salt marsh (TPa), in the Yellow River estuary. The soil samples were incubated at 10 °C, 20 °C and 30 °C, respectively, to determine the rates of anaerobic CO2 production, Q10 values, and their relations to soil properties. Over 70-d incubation, temperature rise significantly increased the mean rates by 70%–136% (from 10 °C to 20 °C) and 64%–142% (from 20 °C to 30 °C) among the marshes, with the mean Q10 values ranging from 1.61 to 2.66. The rates of CO2 production and Q10 values were significantly affected by wetland type and soil depth. Among marshes, the Q10 of the FPa and NTPa soils was higher than that of the TPa soil (for 0–10 cm and 10–20 cm but for 20–30 cm); along soil depths, the Q10 of the top soil was higher than that of the subsoil (for FPa and NTPa but for TPa). Q10 was affected by total organic carbon (TOC), salinity and pH, and the effects were different with marshes. TOC was a main factor regulating Q10 for the freshwater and the no-tidal salt marshes, while salinity and pH were main factors for the tidal salt marsh. The findings highlight an interactive mechanism of soil property and tidal underlying the response of SOM decomposition to temperature change in estuarine wetlands.
format article
author Yue Liu
Jisong Yang
Kai Ning
Andong Wang
Qiuxian Wang
Xuehong Wang
Shuwen Wang
Zhenbo Lv
Yajie Zhao
Junbao Yu
author_facet Yue Liu
Jisong Yang
Kai Ning
Andong Wang
Qiuxian Wang
Xuehong Wang
Shuwen Wang
Zhenbo Lv
Yajie Zhao
Junbao Yu
author_sort Yue Liu
title Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
title_short Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
title_full Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
title_fullStr Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
title_full_unstemmed Temperature sensitivity of anaerobic CO2 production in soils of Phragmites australis marshes with distinct hydrological characteristics in the Yellow River estuary
title_sort temperature sensitivity of anaerobic co2 production in soils of phragmites australis marshes with distinct hydrological characteristics in the yellow river estuary
publisher Elsevier
publishDate 2021
url https://doaj.org/article/c98229808887400fb08aa206c8380fa2
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