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Nitrogen addition may promote soil organic carbon storage and CO2 emission but reduce dissolved organic carbon in Zoige peatland

Luo Ling, Yu Jianlan, Zhu Lingyao, Gikas Petros, He Yan, Xiao Yinlong, Deng Shihuai, Zhang Yanzong, Zhang Shirong, Zhou Wei, Deng Ouping

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URIhttp://purl.tuc.gr/dl/dias/52EC27BC-A871-4AA5-9F94-23EE32513BC6-
Αναγνωριστικόhttps://doi.org/10.1016/j.jenvman.2022.116376-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S0301479722019491-
Γλώσσαen-
Μέγεθος10 pagesen
ΤίτλοςNitrogen addition may promote soil organic carbon storage and CO2 emission but reduce dissolved organic carbon in Zoige peatlanden
ΔημιουργόςLuo Lingen
ΔημιουργόςYu Jianlanen
ΔημιουργόςZhu Lingyaoen
ΔημιουργόςGikas Petrosen
ΔημιουργόςΓκικας Πετροςel
ΔημιουργόςHe Yanen
ΔημιουργόςXiao Yinlongen
ΔημιουργόςDeng Shihuaien
ΔημιουργόςZhang Yanzongen
ΔημιουργόςZhang Shirongen
ΔημιουργόςZhou Weien
ΔημιουργόςDeng Oupingen
ΕκδότηςElsevieren
ΠερίληψηWith the increase of nitrogen (N) deposition, N input can affect soil C cycling since microbes may trigger a series of activities to balance the supply and demand of nutrients. However, as one of the largest C sinks on earth, the role of extra N addition in affecting peatland soil C and its potential mechanism remains unclear and debated. Therefore, this study chose the largest peatland in China (i.e., Zoige, mostly N-limited) to systematically explore the potential changes of soil C, microbes, and ecoenzymes caused by extra N input at the lab scale incubation. Three different types of soils were collected and incubated with different levels of NH4NO3 solution for 45 days. After incubation, N input generally increased soil organic C (SOC) but decreased dissolved organic carbon (DOC) in Zoige peatland soils. Moreover, CO2 and CH4 emissions were significantly increased after high N input (equal to 5 mg NH4NO3 g−1 dry soils). Through a series of analyses, it was observed that microbial communities and ecoenzyme activities mainly influenced the changes of different C components. Collectively, this study implied that the increasing N deposition might help C sequestration in N-limited peatland soils; simultaneously, the risk of increased CO2 and CH4 by N input in global warming should not be ignored.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2024-01-04-
Ημερομηνία Δημοσίευσης2022-
Θεματική ΚατηγορίαEcoenzymeen
Θεματική ΚατηγορίαLife strategyen
Θεματική ΚατηγορίαMicrobial communitiesen
Θεματική ΚατηγορίαNutrient availabilityen
Θεματική ΚατηγορίαNutrient requirementen
Βιβλιογραφική ΑναφοράL. Luo, J. Yu, L. Zhu, P. Gikas, Y. He, Y. Xiao, S. Deng, Y. Zhang, S. Zhang, W. Zhou, and O. Deng, “Nitrogen addition may promote soil organic carbon storage and CO2 emission but reduce dissolved organic carbon in Zoige peatland,” J. Environ. Manage., vol. 324, Dec. 2022, doi: 10.1016/j.jenvman.2022.116376.en

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