Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status
Soil moisture plays a vital role in regulating the direction and magnitude of methane (CH4) fluxes. However, it remains unclear whether the responses of CH4 fluxes to climate warming exhibit difference between dry and moist ecosystems. Based on standardized manipulative experiments (i.e., consistent...
Published in: | Agricultural and Forest Meteorology |
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Language: | English |
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Online Access: | http://ir.ibcas.ac.cn/handle/2S10CLM1/21720 https://doi.org/10.1016/j.agrformet.2020.107988 |
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ftchiacadscibcas:oai:ir.ibcas.ac.cn:2S10CLM1/21720 2023-05-15T17:54:53+02:00 Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status Li, Fei Yang, Guibiao Peng, Yunfeng Wang, Guanqin Qin, Shuqi Song, Yutong Fang, Kai Wang, Jun Yu, Jianchun Liu, Li Zhang, Dianye Chen, Kelong Zhou, Guoying Yang, Yuanhe 2020 http://ir.ibcas.ac.cn/handle/2S10CLM1/21720 https://doi.org/10.1016/j.agrformet.2020.107988 英语 eng ELSEVIER AGRICULTURAL AND FOREST METEOROLOGY http://ir.ibcas.ac.cn/handle/2S10CLM1/21720 doi:10.1016/j.agrformet.2020.107988 cn.org.cspace.api.content.CopyrightPolicy@23604648 Alpine ecosystems Carbon cycle Carbon-climate feedback Climate warming Methane emission Methane uptake Agronomy Forestry Meteorology & Atmospheric Sciences GREENHOUSE-GAS EMISSIONS PERMAFROST THAW NITROGEN-FERTILIZATION CARBON-DIOXIDE CLIMATE-CHANGE TIBETAN PLATEAU GHG FLUX TEMPERATURE PEAT CH4 Agriculture Article 期刊论文 2020 ftchiacadscibcas https://doi.org/10.1016/j.agrformet.2020.107988 2022-06-12T18:14:13Z Soil moisture plays a vital role in regulating the direction and magnitude of methane (CH4) fluxes. However, it remains unclear whether the responses of CH4 fluxes to climate warming exhibit difference between dry and moist ecosystems. Based on standardized manipulative experiments (i.e., consistent experimental design and measurement protocols), here we explored warming effects on growing season CH4 fluxes in two alpine grasslands with contrasting water status on the Tibetan Plateau. We observed that experimental warming enhanced CH4 uptake in the relatively arid alpine steppe, but had no significant effects on CH4 emission in the moist swamp meadow. The distinct responses of CH4 fluxes were associated with the different warming effects on biotic and abiotic factors related to CH4 oxidation and production processes. Warming decreased soil water-filled pore space (WFPS) and increased the pmoA gene abundance and CH4 oxidation potential in the alpine steppe, which together led to a significant increase in CH4 uptake at this alpine steppe site. However, warming-induced enhancement in CH4 oxidation potential might be counteracted by the simultaneously increased CH4 production potential in the swamp meadow, which could then result in insignificant warming effects on CH4 emission at this swamp meadow site. Based on a meta-analysis of warming effects on CH4 fluxes across the entire Tibetan Plateau, we found that the entire alpine grasslands could absorb an extra 0.042 Tg CH4 (1 Tg = 10(12) g) per growing season if soil temperature increased by 1 degrees C. These findings demonstrate that warming effects on CH4 fluxes differ between two alpine grasslands with contrasting moisture conditions and the entire alpine grasslands may not trigger a positive CH4 feedback to climate system with moderate warming. Article in Journal/Newspaper Peat permafrost Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) Agricultural and Forest Meteorology 290 107988 |
institution |
Open Polar |
collection |
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) |
op_collection_id |
ftchiacadscibcas |
language |
English |
topic |
Alpine ecosystems Carbon cycle Carbon-climate feedback Climate warming Methane emission Methane uptake Agronomy Forestry Meteorology & Atmospheric Sciences GREENHOUSE-GAS EMISSIONS PERMAFROST THAW NITROGEN-FERTILIZATION CARBON-DIOXIDE CLIMATE-CHANGE TIBETAN PLATEAU GHG FLUX TEMPERATURE PEAT CH4 Agriculture |
spellingShingle |
Alpine ecosystems Carbon cycle Carbon-climate feedback Climate warming Methane emission Methane uptake Agronomy Forestry Meteorology & Atmospheric Sciences GREENHOUSE-GAS EMISSIONS PERMAFROST THAW NITROGEN-FERTILIZATION CARBON-DIOXIDE CLIMATE-CHANGE TIBETAN PLATEAU GHG FLUX TEMPERATURE PEAT CH4 Agriculture Li, Fei Yang, Guibiao Peng, Yunfeng Wang, Guanqin Qin, Shuqi Song, Yutong Fang, Kai Wang, Jun Yu, Jianchun Liu, Li Zhang, Dianye Chen, Kelong Zhou, Guoying Yang, Yuanhe Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
topic_facet |
Alpine ecosystems Carbon cycle Carbon-climate feedback Climate warming Methane emission Methane uptake Agronomy Forestry Meteorology & Atmospheric Sciences GREENHOUSE-GAS EMISSIONS PERMAFROST THAW NITROGEN-FERTILIZATION CARBON-DIOXIDE CLIMATE-CHANGE TIBETAN PLATEAU GHG FLUX TEMPERATURE PEAT CH4 Agriculture |
description |
Soil moisture plays a vital role in regulating the direction and magnitude of methane (CH4) fluxes. However, it remains unclear whether the responses of CH4 fluxes to climate warming exhibit difference between dry and moist ecosystems. Based on standardized manipulative experiments (i.e., consistent experimental design and measurement protocols), here we explored warming effects on growing season CH4 fluxes in two alpine grasslands with contrasting water status on the Tibetan Plateau. We observed that experimental warming enhanced CH4 uptake in the relatively arid alpine steppe, but had no significant effects on CH4 emission in the moist swamp meadow. The distinct responses of CH4 fluxes were associated with the different warming effects on biotic and abiotic factors related to CH4 oxidation and production processes. Warming decreased soil water-filled pore space (WFPS) and increased the pmoA gene abundance and CH4 oxidation potential in the alpine steppe, which together led to a significant increase in CH4 uptake at this alpine steppe site. However, warming-induced enhancement in CH4 oxidation potential might be counteracted by the simultaneously increased CH4 production potential in the swamp meadow, which could then result in insignificant warming effects on CH4 emission at this swamp meadow site. Based on a meta-analysis of warming effects on CH4 fluxes across the entire Tibetan Plateau, we found that the entire alpine grasslands could absorb an extra 0.042 Tg CH4 (1 Tg = 10(12) g) per growing season if soil temperature increased by 1 degrees C. These findings demonstrate that warming effects on CH4 fluxes differ between two alpine grasslands with contrasting moisture conditions and the entire alpine grasslands may not trigger a positive CH4 feedback to climate system with moderate warming. |
format |
Article in Journal/Newspaper |
author |
Li, Fei Yang, Guibiao Peng, Yunfeng Wang, Guanqin Qin, Shuqi Song, Yutong Fang, Kai Wang, Jun Yu, Jianchun Liu, Li Zhang, Dianye Chen, Kelong Zhou, Guoying Yang, Yuanhe |
author_facet |
Li, Fei Yang, Guibiao Peng, Yunfeng Wang, Guanqin Qin, Shuqi Song, Yutong Fang, Kai Wang, Jun Yu, Jianchun Liu, Li Zhang, Dianye Chen, Kelong Zhou, Guoying Yang, Yuanhe |
author_sort |
Li, Fei |
title |
Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
title_short |
Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
title_full |
Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
title_fullStr |
Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
title_full_unstemmed |
Warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
title_sort |
warming effects on methane fluxes differ between two alpine grasslands with contrasting soil water status |
publisher |
ELSEVIER |
publishDate |
2020 |
url |
http://ir.ibcas.ac.cn/handle/2S10CLM1/21720 https://doi.org/10.1016/j.agrformet.2020.107988 |
genre |
Peat permafrost |
genre_facet |
Peat permafrost |
op_relation |
AGRICULTURAL AND FOREST METEOROLOGY http://ir.ibcas.ac.cn/handle/2S10CLM1/21720 doi:10.1016/j.agrformet.2020.107988 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@23604648 |
op_doi |
https://doi.org/10.1016/j.agrformet.2020.107988 |
container_title |
Agricultural and Forest Meteorology |
container_volume |
290 |
container_start_page |
107988 |
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1766162752485720064 |