Small precipitation events enhance the Eurasian grassland carbon sink

Different sizes of precipitation are specifically essential in controlling plant physiological processes in ecosystems and extremely important for predicting the effects of precipitation on arid and semiarid region carbon cycle. However, the sizes of precipitation events and their role in carbon flu...

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Autores principales:	Tsegaye Gemechu Legesse, Gang Dong, Shicheng Jiang, Jingyan Chen, Xiaobing Dong, Nano Alemu Daba, Eba Muluneh Sorecha, Luping Qu, Li Tian, Changliang Shao
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ecosystem carbon flux Eddy-covariance Grassland Mongolian Plateau Small size precipitation Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/5f40e89889bb4a7eadd0a8600be1058e
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id	oai:doaj.org-article:5f40e89889bb4a7eadd0a8600be1058e
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spelling	oai:doaj.org-article:5f40e89889bb4a7eadd0a8600be1058e2021-12-01T05:01:09ZSmall precipitation events enhance the Eurasian grassland carbon sink1470-160X10.1016/j.ecolind.2021.108242https://doaj.org/article/5f40e89889bb4a7eadd0a8600be1058e2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21009079https://doaj.org/toc/1470-160XDifferent sizes of precipitation are specifically essential in controlling plant physiological processes in ecosystems and extremely important for predicting the effects of precipitation on arid and semiarid region carbon cycle. However, the sizes of precipitation events and their role in carbon flux processes remain unclear. A consecutive three years (2014–2016) eddy covariance flux measurements were conducted to investigate the changes in carbon fluxes under different sizes of precipitation in Mongolia – typical steppe (TPL), meadow steppe (MDW) and shrubland (SHB). Most of the precipitation distributions were dominated by small size events over all sites of the study area. Gross primary productivity reached highest on days with 2 mm d−1 and 5 mm d−1 of precipitation in 2015 and 2014, respectively in TPL, whereas the highest gross primary productivity observed at 10–25 mm d−1 precipitation size in both MDW and SHB. The ecosystem respiration changed positively with different sizes of precipitation events, except for the 5 mm d−1 and 10 mm d−1 precipitation size in the study sites. There existed positive relationship between net ecosystem CO2 exchange (NEE) and small size precipitation event in both TPL and MDW. The slight association was detected between NEE and small size precipitation (<2 mm) events in SHB during the study years. By contrast, the strong relationship was observed between large precipitation sizes and NEE (p < 0.01) in SHB. Overall, this study highlights the different responses of carbon flux to changes in the event size distribution of precipitation in grassland ecosystems which may help to predict how grassland structure and characteristic will respond to climatic change.Tsegaye Gemechu LegesseGang DongShicheng JiangJingyan ChenXiaobing DongNano Alemu DabaEba Muluneh SorechaLuping QuLi TianChangliang ShaoElsevierarticleEcosystem carbon fluxEddy-covarianceGrasslandMongolian PlateauSmall size precipitationEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108242- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecosystem carbon flux Eddy-covariance Grassland Mongolian Plateau Small size precipitation Ecology QH540-549.5
spellingShingle	Ecosystem carbon flux Eddy-covariance Grassland Mongolian Plateau Small size precipitation Ecology QH540-549.5 Tsegaye Gemechu Legesse Gang Dong Shicheng Jiang Jingyan Chen Xiaobing Dong Nano Alemu Daba Eba Muluneh Sorecha Luping Qu Li Tian Changliang Shao Small precipitation events enhance the Eurasian grassland carbon sink
description	Different sizes of precipitation are specifically essential in controlling plant physiological processes in ecosystems and extremely important for predicting the effects of precipitation on arid and semiarid region carbon cycle. However, the sizes of precipitation events and their role in carbon flux processes remain unclear. A consecutive three years (2014–2016) eddy covariance flux measurements were conducted to investigate the changes in carbon fluxes under different sizes of precipitation in Mongolia – typical steppe (TPL), meadow steppe (MDW) and shrubland (SHB). Most of the precipitation distributions were dominated by small size events over all sites of the study area. Gross primary productivity reached highest on days with 2 mm d−1 and 5 mm d−1 of precipitation in 2015 and 2014, respectively in TPL, whereas the highest gross primary productivity observed at 10–25 mm d−1 precipitation size in both MDW and SHB. The ecosystem respiration changed positively with different sizes of precipitation events, except for the 5 mm d−1 and 10 mm d−1 precipitation size in the study sites. There existed positive relationship between net ecosystem CO2 exchange (NEE) and small size precipitation event in both TPL and MDW. The slight association was detected between NEE and small size precipitation (<2 mm) events in SHB during the study years. By contrast, the strong relationship was observed between large precipitation sizes and NEE (p < 0.01) in SHB. Overall, this study highlights the different responses of carbon flux to changes in the event size distribution of precipitation in grassland ecosystems which may help to predict how grassland structure and characteristic will respond to climatic change.
format	article
author	Tsegaye Gemechu Legesse Gang Dong Shicheng Jiang Jingyan Chen Xiaobing Dong Nano Alemu Daba Eba Muluneh Sorecha Luping Qu Li Tian Changliang Shao
author_facet	Tsegaye Gemechu Legesse Gang Dong Shicheng Jiang Jingyan Chen Xiaobing Dong Nano Alemu Daba Eba Muluneh Sorecha Luping Qu Li Tian Changliang Shao
author_sort	Tsegaye Gemechu Legesse
title	Small precipitation events enhance the Eurasian grassland carbon sink
title_short	Small precipitation events enhance the Eurasian grassland carbon sink
title_full	Small precipitation events enhance the Eurasian grassland carbon sink
title_fullStr	Small precipitation events enhance the Eurasian grassland carbon sink
title_full_unstemmed	Small precipitation events enhance the Eurasian grassland carbon sink
title_sort	small precipitation events enhance the eurasian grassland carbon sink
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5f40e89889bb4a7eadd0a8600be1058e
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Small precipitation events enhance the Eurasian grassland carbon sink

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