Warming Increases Nitrous Oxide Emission from the Littoral Zone of Lake Poyang, China

Cheng, Jinhua; Xu, Ligang; Jiang, Meiqin; Jiang, Jiahu; Xu, Yanxue

doi:10.3390/su12145674

Cited by 9 publications

(5 citation statements)

References 51 publications

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“…Comparison of N 2 O flux between ambient and warming (a), between ambient and acidification (b) across global estuaries and sea waters. ,,,− Asterisk indicates significant difference between ambient and warming and between ambient and acidification ( P < 0.05). Bule shade area represents the data of seawater.…”

Section: Discussionmentioning

confidence: 99%

Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments

Li,

Qi,

et al. 2024

Environ. Sci. Technol.

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Global warming and acidification, induced by a substantial increase in anthropogenic CO 2 emissions, are expected to have profound impacts on biogeochemical cycles. However, underlying mechanisms of nitrous oxide (N 2 O) production in estuarine and coastal sediments remain rarely constrained under warming and acidification. Here, the responses of sediment N 2 O production pathways to warming and acidification were examined using a series of anoxic incubation experiments. Denitrification and N 2 O production were largely stimulated by the warming, while N 2 O production decreased under the acidification as well as the denitrification rate and electron transfer efficiency. Compared to warming alone, the combination of warming and acidification decreased N 2 O production by 26 ± 4%, which was mainly attributed to the decline of the N 2 O yield by fungal denitrification. Fungal denitrification was mainly responsible for N 2 O production under the warming condition, while bacterial denitrification predominated N 2 O production under the acidification condition. The reduced site preference of N 2 O under acidification reflects that the dominant pathways of N 2 O production were likely shifted from fungal to bacterial denitrification. In addition, acidification decreased the diversity and abundance of nirS-type denitrifiers, which were the keystone taxa mediating the low N 2 O production. Collectively, acidification can decrease sediment N 2 O yield through shifting the responsible production pathways, partly counteracting the warming-induced increase in N 2 O emissions, further reducing the positive climate warming feedback loop.

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Section: Discussionmentioning

confidence: 99%

Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments

Li,

Qi,

et al. 2024

Environ. Sci. Technol.

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“…Some of them are related to ongoing global climate warming which in lacustrine ecosystems will translate into the increase in surface water temperatures, decrease in duration and thickness of winter ice, decline in lake water levels, reduced vertical circulation as well as more frequent harmful cyanobacterial blooms (Woolway et al., 2020, 2022). One of the most important far‐reaching effects of the warming will also be enhanced release of greenhouse gases (GHG) (Bartosiewicz et al., 2019; Cheng et al., 2020; Guo et al., 2020; Tanentzap et al., 2019; Yang et al., 2012). However, in many (if not most) lakes, climate impact is superimposed on direct anthropogenic influences.…”

Section: Introductionmentioning

confidence: 99%

Methane and Nitrous Oxide Emissions From an Anthropogenically Transformed Lake (Lake Licheńskie, Poland)

Woszczyk,

Schubert

2023

JGR Biogeosciences

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For over 50 years Lake Licheńskie (LLi), central Poland, has been involved in the cooling system of two power plants (PP). Owing to the discharge of cooling waters the lake was prone to considerable environmental changes which involved its thermal structure, mixing regime and water parameters. In this study we investigated how the man‐made transformations affected greenhouse gas emissions (GHG; CH4 and N2O) from the lake. The GHG emissions in Lake Licheńskie were monitored at the deepest site from December 2014 to November 2015 and between March 2022 and February 2023. The values obtained were compared to reference lakes encompassing 10 natural and undisturbed inland and coastal lakes in Poland. Our results revealed that LLi was a net source of CH4 and N2O to the atmosphere but the fluxes were low. The mean annual diffusive fluxes were 0.21–0.38 mmol·m−2 d−1 for CH4 and 4.90–7.40 μmol·m−2 d−1 for N2O. The CH4 emissions were significantly lower than in most of reference lakes, while the N2O emissions were comparable. Therefore, the human intervention resulted in reduction of CH4 release from LLi but it had minor effect on the N2O. The most likely reason for the low direct fluxes of GHGs from the surface waters was the high flushing rate of the lake and export of dissolved gases to adjacent lakes and canals. Hence, the overall emission from the connected lake and canal system was not mitigated by the man‐made changes to the lake system.

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“…The first strategy is to use hydrological data (e.g., water level data) to analyze the water body changes in Poyang Lake, which cannot reveal the specific spatial location of water body changes and water level data are difficult to obtain [9,10]. With the rapid development of remote sensing technologies and the free availability of open-access satellite datasets, satellite imagery has provided a superior solution to traditional methods for monitoring surface water areas [11,12]. The second strategy is to monitor surface water changes in Poyang Lake using remote sensing data from various sensors and different water indices.…”

Section: Introductionmentioning

confidence: 99%

A Long-Term Analysis of Spatiotemporal Change and Driving Factors on Poyang Lake during 1987-2019

Zhu¹,

Xing²,

Dong-yang³

et al. 2021

Pol. J. Environ. Stud.

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As the largest freshwater Lake in China, Poyang Lake plays an important role in regulating the water level of Yangtze River and maintaining the ecological balance of surrounding areas. Therefore, this study utilizes Google Earth Engine (GEE) geospatial technology to acquire 124 remotely sensed images to explore the spatial and temporal changes of the four seasons of Poyang Lake from 1987 to 2019. The official statistics from relevant cities are used to quantitatively reveal the main driving factors of water body changes in Poyang Lake. Temporally, the water body area of Poyang Lake shows an obvious downward trend in general. Spatially, the water body area of Poyang Lake shows a gradual decrease from the center of the lake to the surroundings. In 1987-1998, the water body area of Poyang Lake showed an increasing trend, with an increase of about 727.90km 2 . From 1998 to 2006, the water body area of Poyang Lake mainly showed a decreasing trend, with a decrease of 401.58km 2 . The water body area of Poyang Lake increased slowly during 2006-2017. Anthropogenic factors and natural factors have influenced the changes in water body area of Poyang Lake to a certain extent. This study can provide valuable supporting data for the comprehensive environmental management and flood hazard monitoring of Poyang Lake.

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Warming Increases Nitrous Oxide Emission from the Littoral Zone of Lake Poyang, China

Cited by 9 publications

References 51 publications

Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments

Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments

Methane and Nitrous Oxide Emissions From an Anthropogenically Transformed Lake (Lake Licheńskie, Poland)

A Long-Term Analysis of Spatiotemporal Change and Driving Factors on Poyang Lake during 1987-2019

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Warming Increases Nitrous Oxide Emission from the Littoral Zone of Lake Poyang, China

Cited by 9 publications

References 51 publications

Acidification Offset Warming-Induced Increase in N2O Production in Estuarine and Coastal Sediments

Acidification Offset Warming-Induced Increase in N2O Production in Estuarine and Coastal Sediments

Methane and Nitrous Oxide Emissions From an Anthropogenically Transformed Lake (Lake Licheńskie, Poland)

A Long-Term Analysis of Spatiotemporal Change and Driving Factors on Poyang Lake during 1987-2019

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Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments

Acidification Offset Warming-Induced Increase in N₂O Production in Estuarine and Coastal Sediments