Soil greenhouse gas emissions reduce the contribution of mangrove plants to the atmospheric cooling effect

Chen, Guangcheng; Chen, Bin; Yu, Dan; Tam, N.F.Y.; Ye, Yong; Chen, Shunyang

doi:10.1088/1748-9326/11/12/124019

Cited by 68 publications

(53 citation statements)

References 37 publications

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“…The K. obovata mangrove swamps in the Pearl River Estuary, which received anthropogenic nutrients from the delta and nearby polluted rivers, had fluxes as high as 23.83 μ mol N 2 O m −2 h −1 , 5168.62 μ mol CH 4 m −2 h −1 , and 20.56 mmol CO 2 m −2 h −1 in the summer (Chen et al ). In the present study, our study sites did not receive direct discharge of wastewater from the adjacent aquaculture pond and the fluxes of the greenhouse gases were low, less than 2.08 mmol CO 2 m −2 h −1 , 2.62 μ mol CH 4 m −2 h −1 , and 0.45 N 2 O μ mol m −2 h −1 , and even lower than other K. obovata mangroves in Jiulong River Estuary (Chen et al ). Actually, the sediment OC and TN concentrations at our sites were also lower than those reported in the above mangroves (Chen et al , ).…”

Section: Discussionmentioning

confidence: 46%

“…). These two sites displayed good conditions and the density and canopy height of the mangroves were 0.9 stems m −2 and 5.5 m, respectively (Chen et al ).…”

Section: Study Area and Methodsmentioning

confidence: 99%

“…As well, numerous studies have recognized mangrove sediments as sources of the potent greenhouse gas nitrous oxide (N 2 O) (Kreuzwieser et al ; Allen et al ; Chen et al ). The greenhouse gas emissions from mangrove sediments thus are worthy of additional researches not only for solving carbon budgets in mangrove forests but also to assess their climate feedbacks (Chen et al ).…”

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confidence: 99%

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Benthic microalgae offset the sediment carbon dioxide emission in subtropical mangrove in cold seasons

Chen

Chmura

Wang

et al. 2019

Limnology & Oceanography

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Our study examined the relationship of microphytobenthos to greenhouse gas fluxes from sediments of a subtropical mangrove forest and adjacent mudflat in the Jiulong River Estuary, South China. The relationship between chlorophyll a concentration at the sediment surface and diatom density confirmed that these microalgae were the important component of the microphytobenthos, which produced an observable biofilm in cold seasons (winter and spring) on both the mangrove and mudflat sediment surfaces. Fluxes of methane and nitrous oxide were not affected by the microalgae film and were similar between the mangrove and mudflat. However, benthic microalgae affected the sediment to atmosphere carbon dioxide (CO 2 ) flux, and the effect was temporally variable with the seasonal change in microalgae abundance. In the cold seasons, the mangrove sediment was a CO 2 sink under light chambers but a source under dark chambers. In summer, when there was no visible microalgae film at the sediment surface, the intertidal sediments had CO 2 emissions and comparable fluxes between the two chambers. The negative daily CO 2 fluxes of the film-covered sediment (as the average of the dark and light fluxes) and positive flux of the sediment without visible biofilm indicated that the occurrence of microalgae film converted the mangrove sediment from a CO 2 source to a sink and that the photosynthesis of the microalgae film offset the sediment respiration during the cold seasons in this study. We also found similar effects of microalgae on CO 2 fluxes on the nonvegetated mudflat.

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Section: Discussionmentioning

confidence: 46%

“…). These two sites displayed good conditions and the density and canopy height of the mangroves were 0.9 stems m −2 and 5.5 m, respectively (Chen et al ).…”

Section: Study Area and Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Benthic microalgae offset the sediment carbon dioxide emission in subtropical mangrove in cold seasons

Chen

Chmura

Wang

et al. 2019

Limnology & Oceanography

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“…We collected global NPP and NEP data from online database resources (Luyssaert et al 2007;Luyssaert 2009) and published literature (Li et al 2006;Yan et al 2006;Huang et al 2007;Yang et al 2007;Ma et al 2008;Xiao et al 2010;Chen et al 2011a;Tan et al 2011;Tang et al 2011Tang et al , 2015bTang et al 2016a, Chen et al 2016aSong et al 2017). These data included location coordinates and meteorological information, such as mean annual temperature (MAT) and mean annual precipitation (MAP).…”

Section: Literature Survey For Npp and Nep Comparisonmentioning

confidence: 99%

Moso bamboo (Phyllostachys pubescens) forests as a significant carbon sink? A case study based on 4‐year measurements in central Taiwan

Lin

Hsieh

Lin

et al. 2017

Ecological Research

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The aggressive expansion of Moso bamboo (Phyllostachys pubescens) forest into adjacent ecosystems which might alter the carbon balance replacement, has been noted recently in East Asian countries such as Taiwan. Moso bamboo has a biennial growth cycle that causes significant inter‐annual variations in net primary productivity (NPP) and net ecosystem productivity (NEP). To our knowledge, only one study has investigated NPP covering biennial cycles in a Moso bamboo forest. Therefore, the aim of the present study was to clarify the NPP and NEP in a Moso bamboo forest in Taiwan by considering above‐ and below‐ground processes over a 4‐year experimental period. The estimated NPP and NEP showed considerable inter‐annual variations (coefficient of variation of 39 and 79%, respectively). Averaged over the 4 years, the NPP and NEP were 8.86 ± 3.46 and 4.32 ± 3.35 Mg C ha−1 year−1, respectively, which were within the ranges (6.53–14.36 and 3.59–7.98 Mg C ha−1 year−1, respectively) reported for Moso bamboo forests in East Asian countries. A global comparison of NPP and NEP among forest ecosystems using data from published literature indicated that the estimated NPP and NEP in the present study, as well as those in Moso bamboo forests from East Asian countries, were within the upper range of the values reported for other forest ecosystem. The results indicate that Moso bamboo forests may have high potential as a carbon sink among forests ecosystems.

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“…Mangrove wetlands are a potential source for atmospheric CH 4 , but there remain considerable uncertainties regarding the importance of mangrove wetlands for contributing climate warming [22]. Through a field study at three tidal zones of two mangrove ecosystems in southeastern China, Zheng et al found highly variable CH 4 emission patterns among the three zones and attributed this phenomenon to the heterogeneity in the mangrove soil environment [23].…”

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confidence: 99%

Disturbance Effects on Soil Carbon and Greenhouse Gas Emissions in Forest Ecosystems

Cai

Chang

2020

Forests

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Forests cover around 30% of the global land area and forest ecosystems can store over 70% of total soil organic carbon (SOC) of all terrestrial ecosystems, but SOC stocks and greenhouse gas (GHG) emissions may be affected by both natural and anthropogenic disturbances. Even though the changes in forest soil C pool can have a significant effect on climate change, there are some contradictory results regarding the role of forest disturbance on SOC sequestration, GHG emissions, and the mitigation of global changes. Therefore, there is a need to better understand the impact of different disturbance regimes on forest soil C storage and GHG emissions. A Special Issue was therefore organized for discussing the responses of soil C storage and GHG emissions to various types of disturbances in forest ecosystems and a total of 15 studies were accepted for this special issue to assess these responses. This Special Issue includes the effects of storms and beetle outbreaks, Karstification, rock desertification, warming, nitrogen addition, land-use change, field tillage, and biochar application on soil C dynamics and/or GHG emissions.Disturbances from natural (e.g., insect outbreaks, geologic processes and wildfires) and anthropogenic (e.g., logging, applying soil amendments and land use change) are important drivers of changes of ecological processes in forest ecosystems, and the impact of disturbances on ecosystem processes may vary with the type and level of disturbances [1-3]. These disturbances are expected to markedly affect the amount, form and stability of soil organic carbon (SOC) and the emission of three major trace greenhouse gases (GHGs) (CO 2 , CH 4 and N 2 O) from forest ecosystems [4,5]. More than 70% of total SOC of all terrestrial ecosystems can be found in forest ecosystems [6] and thus, a minor change in the size of the forest SOC pool can exert a large impact on climate change on a global scale. The assessment of the variability in forest SOC storage and GHG emissions is thus a critical consideration for evaluating regional and global climate change [7]. It is vitally important to improve the understanding of the impact of different disturbance regimes on forest SOC storage and GHG emissions for guiding future research, forest management practices, and policy development. We therefore organized a Special Issue to bring together researchers working on different aspects of forest ecology to share their findings on disturbance effects on SOC storage and GHG emissions in forest ecosystems. We are pleased that we received a strong response from the scientific community to this call for the Special Issue and a total of 15 papers have ultimately been accepted for inclusion in this Special Issue.Three papers in this Special Issue address the effect of natural disturbances on SOC content and GHG emissions. Storms and beetle outbreaks are two major forms of disturbance in European forests,

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Soil greenhouse gas emissions reduce the contribution of mangrove plants to the atmospheric cooling effect

Cited by 68 publications

References 37 publications

Benthic microalgae offset the sediment carbon dioxide emission in subtropical mangrove in cold seasons

Benthic microalgae offset the sediment carbon dioxide emission in subtropical mangrove in cold seasons

Moso bamboo (Phyllostachys pubescens) forests as a significant carbon sink? A case study based on 4‐year measurements in central Taiwan

Disturbance Effects on Soil Carbon and Greenhouse Gas Emissions in Forest Ecosystems

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