The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea

Jian’an LIU; Xueqing YU; Xinyi LIN; Tong PENG; Liming XUE; Jinzhou DU

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The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea

Chemistry | Updated：2025-02-19

- The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea
- The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea
- 海洋湖沼学报(英文) 2025年43卷第1期页码：90-102
- Affiliations：
  
  1.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
  2.State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
- Author bio：
  
  jzdu@sklec.ecnu.edu.cn
- Funds：
  
  the National Key R&D Program of China(2022YFE0209300);the National Natural Science Foundation of China(42106043;42141016)
- DOI：
  中图分类号：
- 收稿：2023-12-05，
  
  纸质出版：2025-01-01
- Accepted：
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The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea[J]. 海洋湖沼学报(英文), 2025,43(1):90-102.

LIU Jian’an,YU Xueqing,LIN Xinyi,et al.The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea[J].Journal of Oceanology and Limnology,2025,43(01):90-102.
The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea[J]. 海洋湖沼学报(英文), 2025,43(1):90-102. DOI：

LIU Jian’an,YU Xueqing,LIN Xinyi,et al.The importance of porewater exchange process on carbon lateral export from saltmarsh creek to coastal sea[J].Journal of Oceanology and Limnology,2025,43(01):90-102. DOI：

摘要

Abstract

Saltmarsh is one of the blue carbon ecosystems for the highest carbon burial efficiency. However

the buried carbon in saltmarsh may still be exported to coastal water through porewater exchange

a process that has often been overlooked in previous studies. A typical tidal creek of the Dongtan saltmarsh wetland in Chongming Island

Shanghai

China

was studied. The

224

Ra and

223

Ra activities were measured and the hydrological parameters such as water flow were determined

from which the porewater exchange rate in the tidal creek was estimated to be 1.78±1.73 cm/d. Meanwhile

the carbon concentrations in porewater were determined

based on which the fluxes of dissolved inorganic carbon (DIC)

dissolved organic carbon (DOC)

and CO

exported from porewater exchange were derived to be 60±17

6.6±4.0

0.082±0.079

and 16±11 mmol/(m

·d)

respectively. In addition

analysis on different species of carbon in the creek water showed that

the fluxes of DIC

DOC

and CO

exported laterally from tidal creek to coastal sea were 58±14

7.6±2.3

0.001 1±0.000 63

and 1.5±0.68 mmol/(m

·d)

respectively

indicating that the porewater exchange-derived carbon fluxes accounted for a large portion of the lateral carbon outwelling

and even much higher than those in CH

and CO

fluxes. Furthermore

the carbon exported from porewater exchange accounted for 50% of the carbon burial in the tidal creek system

of which DIC accounted for 73% of the total carbon flux transported by porewater exchange. Therefore

this study indicated that the porewater exchange-derived carbon fluxes to the tidal creek water may cause an overestimation in the carbon sequestration capacity of saltmarsh wetlands

and revealed the importance of porewater exchange for the carbon cycle of tidal creek system of saltmarsh wetlands.

关键词

Keywords

references

Adyasari D , Dimova N T , Dulai H et al . 2023 . Radon-222 as a groundwater discharge tracer to surface waters . Earth-Science Reviews , 238 : 104321 , http://doi.‍org/10.1016/j.earscirev.2023.104321 http://doi.‍org/10.1016/j.earscirev.2023.104321 . https://do 10.1016/j.earscirev.2023.104321 http://dx.doi.org/10.1016/j.earscirev.2023.104321

Alongi D M . 2009 . The Energetics of Mangrove Forests . Springer, Dordrecht , http://doi.org/10.1007/978-1-4020-4271-3 http://doi.org/10.1007/978-1-4020-4271-3 .

Atkins M L , Santos I R , Ruiz-Halpern S et al . 2013 . Carbon dioxide dynamics driven by groundwater discharge in a coastal floodplain creek . Journal of Hydrology , 493 : 30 - 42 , http://doi.org/10.1016/j.jhydrol.2013.04.008 http://doi.org/10.1016/j.jhydrol.2013.04.008 .

Bouchard V , Lefeuvre J C . 2000 . Primary production and macro-detritus dynamics in a European salt marsh: carbon and nitrogen budgets . Aquatic Botany , 67 ( 1 ): 23 - 42 , http://doi.org/10.1016/S0304-3770(99)00086-8 http://doi.org/10.1016/S0304-3770(99)00086-8 .

Bouillon S , Borges A V , Castañeda-Moya E et al . 2008 . Mangrove production and carbon sinks: a revision of global budget estimates . Global Biogeochemical Cycles , 22 ( 2 ): GB 2013 , http://doi.org/10.1029/2007gb003052 http://doi.org/10.1029/2007gb003052 .

Call M , Maher D T , Santos I R et al . 2015 . Spatial and temporal variability of carbon dioxide and methane fluxes over semi-diurnal and spring-neap-spring timescales in a mangrove creek . Geochimica et Cosmochimica Acta , 150 : 211 - 225 , http://doi.org/10.1016/j.gca.2014.11.023 http://doi.org/10.1016/j.gca.2014.11.023 .

Chen X G , Santos I R , Hu D F et al . 2022 . Pore-water exchange flushes blue carbon from intertidal saltmarsh sediments into the sea . Limnology and Oceanography Letters , 7 ( 4 ): 312 - 320 , http://doi.org/10.1002/lol2.10236 http://doi.org/10.1002/lol2.10236 .

Chen X G , Zhu P Y , Zhang Y et al . 2023 . Plum rain enhances porewater greenhouse gas fluxes and weakens the acidification buffering potential in saltmarshes . Journal of Hydrology , 616 : 128686 , http://doi.‍org/10.1016/j.jhydrol.2022.128686 http://doi.‍org/10.1016/j.jhydrol.2022.128686 . https://do 10.1016/j.jhydrol.2022.128686 http://dx.doi.org/10.1016/j.jhydrol.2022.128686

Childers D L , Jr Day J W , Jr McKellar H N . 2002 . Twenty More Years of Marsh and Estuarine Flux Studies: Revisiting Nixon . In: Weinstein M P, Kreeger D A eds. Concepts and Controversies in Tidal Marsh Ecology . Springer, Dordrecht . p. 391 - 423 , http://doi.‍org/10.‍1007/0-306-47534-0_18 http://doi.‍org/10.‍1007/0-306-47534-0_18 . https://do 10.1007/0-306-47534-0_18 http://dx.doi.org/10.1007/0-306-47534-0_18

Crump B C , Bowen J L . 2024 . The microbial ecology of estuarine ecosystems . Annual Review of Marine Science , 16 : 335 - 360 , http://doi.‍org/10.1146/annurev-marine-022123-101845 http://doi.‍org/10.1146/annurev-marine-022123-101845 . https://do 10.1146/annurev-marine-022123-101845 http://dx.doi.org/10.1146/annurev-marine-022123-101845

Cui Y L , Tang Y N , Yang S et al . 2023 . Changes in wintering Hooded Cranes and their habitats at Chongming Dongtan over the past 20 years . Avian Research , 14 : 100083 , http://doi.org/10.1016/j.avrs.2023.100083 http://doi.org/10.1016/j.avrs.2023.100083 .

Dittmar T , Hertkorn N , Kattner G et al . 2006 . Mangroves, a major source of dissolved organic carbon to the oceans . Global Biogeochemical Cycles , 20 ( 1 ): GB 1012 , http://doi.org/10.1029/2005gb002570 http://doi.org/10.1029/2005gb002570 .

Garcia-Orellana J , Rodellas V , Tamborski J et al . 2021 . Radium isotopes as submarine groundwater discharge (SGD) tracers: review and recommendations . Earth-Science Reviews , 220 : 103681 , http://doi.‍org/10.‍1016/j.‍earscirev.2021.103681 http://doi.‍org/10.‍1016/j.‍earscirev.2021.103681 . https://do 10.1016/j.earscirev.2021.103681 http://dx.doi.org/10.1016/j.earscirev.2021.103681

Gatland J R , Santos I R , Maher D T et al . 2014 . Carbon dioxide and methane emissions from an artificially drained coastal wetland during a flood: implications for wetland global warming potential . Journal of Geophysical Research : Biogeosciences , 119 ( 8 ): 1698 - 1716 , http://doi.org/10.1002/2013JG002544 http://doi.org/10.1002/2013JG002544 .

Guimond J , Tamborski J . 2021 . Salt marsh hydrogeology: a review . Water , 13 ( 4 ): 543 , http://doi.org/10.3390/w13040543 http://doi.org/10.3390/w13040543 .

Ho D T , Law C S , Smith M J et al . 2006 . Measurements of air-sea gas exchange at high wind speeds in the Southern Ocean: implications for global parameterizations . Geophysical Research Letters , 33 ( 16 ): L16611 , http://doi.‍org/10.1029/2006GL026817 http://doi.‍org/10.1029/2006GL026817 . https://do 10.1029/2006gl026817 http://dx.doi.org/10.1029/2006gl026817

Hu X P , Cai W J . 2011 . An assessment of ocean margin anaerobic processes on oceanic alkalinity budget . Global Biogeochemical Cycles , 25 ( 3 ): GB 3003 , http://doi.org/10.1029/2010GB003859 http://doi.org/10.1029/2010GB003859 .

Jiang W Z , Wang G Z , Li Q et al . 2023 . The fate of carbon resulting from pore water exchange in a mangrove and Spartina alterniflora ecozone . Acta Oceanologica Sinica , 42 ( 8 ): 61 - 76 , http://doi.org/10.1007/s13131-023-2234-2 http://doi.org/10.1007/s13131-023-2234-2 .

Li Y L , Wang L , Zhang W Q et al . 2010 . Variability of soil carbon sequestration capability and microbial activity of different types of salt marsh soils at Chongming Dongtan . Ecological Engineering , 36 ( 12 ): 1754 - 1760 , http://doi.org/10.1016/j.ecoleng.2010.07.029 http://doi.org/10.1016/j.ecoleng.2010.07.029 .

Liu J A , Yu X Q , Chen X G et al . 2021 . Utility of radium quartet for evaluating porewater-derived carbon to a saltmarsh nearshore water: implications for blue carbon export . Science of the Total Environment , 764 : 144238 , http://doi.org/10.1016/j.scitotenv.2020.144238 http://doi.org/10.1016/j.scitotenv.2020.144238 .

Liu Q , Charette M A , Henderson P B et al . 2014 . Effect of submarine groundwater discharge on the coastal ocean inorganic carbon cycle . Limnology and Oceanography , 59 ( 5 ): 1529 - 1554 , http://doi.org/10.4319/lo.2014.59.5.1529 http://doi.org/10.4319/lo.2014.59.5.1529 .

Mac Dowell N , Fennell P S , Shah N et al . 2017 . The role of CO 2 capture and utilization in mitigating climate change . Nature Climate Change , 7 ( 4 ): 243 - 249 , http://doi.‍org/10.1038/nclimate3231 http://doi.‍org/10.1038/nclimate3231 . https://do 10.1038/nclimate3231 http://dx.doi.org/10.1038/nclimate3231

Macreadie P I , Costa M D P , Atwood T B et al . 2021 . Blue carbon as a natural climate solution . Nature Reviews Earth & Environment , 2 ( 12 ): 826 - 839 , http://doi.org/10.1038/s43017-021-00224-1 http://doi.org/10.1038/s43017-021-00224-1 .

Maher D T , Santos I R , Golsby-Smith L et al . 2013 . Groundwater-derived dissolved inorganic and organic carbon exports from a mangrove tidal creek: the missing mangrove carbon sink? Limnology and Oceanography , 58 ( 2 ): 475 - 488 , http://doi.org/10.4319/lo.2013.58.2.0475 http://doi.org/10.4319/lo.2013.58.2.0475 .

Mason V G , Burden A , Epstein G et al . 2023 . Blue carbon benefits from global saltmarsh restoration . Global Change Biology , 29 ( 23 ): 6517 - 6545 , http://doi.org/10.1111/gcb.16943 http://doi.org/10.1111/gcb.16943 .

Millero F J . 2005 . Chemical Oceanography, 3 rd edn . CRC Press , https://doi.org/10.1201/9780429258718 https://doi.org/10.1201/9780429258718 .

Mulligan A E , Charette M A . 2006 . Intercomparison of submarine groundwater discharge estimates from a sandy unconfined aquifer . Journal of Hydrology , 327 ( 3-4 ): 411 - 425 , http://doi.org/10.1016/j.jhydrol.2005.11.056 http://doi.org/10.1016/j.jhydrol.2005.11.056 .

Neubauer S C , Megonigal J P . 2015 . Moving beyond global warming potentials to quantify the climatic role of ecosystems . Ecosystems , 18 ( 6 ): 1000 - 1013 , http://doi.org/10.1007/s10021-015-9879-4 http://doi.org/10.1007/s10021-015-9879-4 .

O'Connor D J , Dobbins W E . 1958 . Mechanism of reaeration in natural streams . Transactions of the American Society of Civil Engineers , 123 ( 1 ): 641 - 666 , http://doi.org/10.1061/TACEAT.00076 http://doi.org/10.1061/TACEAT.00076 .

Odum E P . 1968 . A research challenge: evaluating the productivity of coastal and estuarine water . In: Proceedings of the Second Sea Grant Conference . University of Rhode Island, Kingston, Rhode Island, USA . p. 63 - 64 .

Panneer Selvam B , Natchimuthu S , Arunachalam L et al . 2014 . Methane and carbon dioxide emissions from inland waters in India-implications for large scale greenhouse gas balances . Global Change Biology , 20 ( 11 ): 3397 - 3407 , http://doi.org/10.1111/gcb.12575 http://doi.org/10.1111/gcb.12575 .

Sadat-Noori M , Maher D T , Santos I R . 2016 . Groundwater discharge as a source of dissolved carbon and greenhouse gases in a subtropical estuary . Estuaries and Coasts , 39 ( 3 ): 639 - 656 , http://doi.org/10.1007/s12237-015-0042-4 http://doi.org/10.1007/s12237-015-0042-4 .

Santos I R , Maher D T , Larkin R et al . 2019 . Carbon outwelling and outgassing vs. burial in an estuarine tidal creek surrounded by mangrove and saltmarsh wetlands . Limnology and Oceanography , 64 ( 3 ): 996 - 1013 , http://doi.org/10.1002/lno.11090 http://doi.org/10.1002/lno.11090 .

Schutte C A , Moore W S , Wilson A M et al . 2020 . Groundwater‐driven methane export reduces salt marsh blue carbon potential . Global Biogeochemical Cycles , 34 ( 10 ): e2020 GB 006587 , http://doi.org/10.1029/2020gb006587 http://doi.org/10.1029/2020gb006587 .

Sippo J Z , Maher D T , Tait D R et al . 2017 . Mangrove outwelling is a significant source of oceanic exchangeable organic carbon . Limnology and Oceanography Letters , 2 ( 1 ): 1 - 8 , http://doi.org/10.1002/lol2.10031 http://doi.org/10.1002/lol2.10031 .

Stieglitz T C , Clark J F , Hancock G J . 2013 . The mangrove pump: the tidal flushing of animal burrows in a tropical mangrove forest determined from radionuclide budgets . Geochimica et Cosmochimica Acta , 102 : 12 - 22 , http://doi.org/10.1016/j.gca.2012.10.033 http://doi.org/10.1016/j.gca.2012.10.033 .

Taillardat P , Willemsen P , Marchand C et al . 2018 . Assessing the contribution of porewater discharge in carbon export and CO 2 evasion in a mangrove tidal creek (Can Gio, Vietnam) . Journal of Hydrology , 563 : 303 - 318 , http://doi.org/10.1016/j.jhydrol.2018.05.042 http://doi.org/10.1016/j.jhydrol.2018.05.042 .

Tait D R , Maher D T , Macklin P A et al . 2016 . Mangrove pore water exchange across a latitudinal gradient . Geophysical Research Letters , 43 ( 7 ): 3334 - 3341 , http://doi.org/10.1002/2016gl068289 http://doi.org/10.1002/2016gl068289 .

Tait D R , Maher D T , Sanders C J et al . 2017 . Radium-derived porewater exchange and dissolved N and P fluxes in mangroves . Geochimica et Cosmochimica Acta , 200 : 295 - 309 , http://doi.org/10.1016/j.gca.2016.12.024 http://doi.org/10.1016/j.gca.2016.12.024 .

Tang H , Nolte S , Jensen K et al . 2020 . Grazing mediates soil microbial activity and litter decomposition in salt marshes . Science of the Total Environment , 720 : 137559 , http://doi.org/10.1016/j.scitotenv.2020.137559 http://doi.org/10.1016/j.scitotenv.2020.137559 .

Torres-Alvarado R , Ramírez-Vives F , Fernández F J et al . 2005 . Methanogenesis and methane oxidation in wetlands. Implications in the global carbon cycle . Hidrobiológica , 15 ( 3 ): 327 - 349 .

Wang Z A , Kroeger K D , Ganju N K et al . 2016 . Intertidal salt marshes as an important source of inorganic carbon to the coastal ocean . Limnology and Oceanography , 61 ( 5 ): 1916 - 1931 , http://doi.org:10.1002/lno.10347 http://doi.org:10.1002/lno.10347 .

Wanninkhof R . 2014 . Relationship between wind speed and gas exchange over the ocean revisited . Limnology and Oceanography : Methods , 12 ( 6 ): 351 - 362 , http://doi.org/10.4319/lom.2014.12.351 http://doi.org/10.4319/lom.2014.12.351 .

Weiss R F . 1974 . Carbon dioxide in water and seawater: the solubility of a non-ideal gas . Marine Chemistry , 2 ( 3 ): 203 - 215 , http://doi.org/10.1016/0304-4203(74)90015-2 http://doi.org/10.1016/0304-4203(74)90015-2 .

Wu Z J , Zhu H N , Tang D H et al . 2021 . Submarine groundwater discharge as a significant export of dissolved inorganic carbon from a mangrove tidal creek to Qinglan Bay (Hainan Island, China) . Continental Shelf Research , 223 : 104451 , http://doi.org/10.1016/j.csr.2021.104451 http://doi.org/10.1016/j.csr.2021.104451 .

Xiao K , Wilson A M , Li H L et al . 2021 . Large CO 2 release and tidal flushing in salt marsh crab burrows reduce the potential for blue carbon sequestration . Limnology and Oceanography , 66 ( 1 ): 14 - 29 , http://doi.org/10.1002/lno.11582 http://doi.org/10.1002/lno.11582 .

Xin P , Jin G Q , Li L et al . 2009 . Effects of crab burrows on pore water flows in salt marshes . Advances in Water Resources , 32 ( 3 ): 439 - 449 , http://doi.org/10.1016/j.advwatres.2008.12.008 http://doi.org/10.1016/j.advwatres.2008.12.008 .

Xin P , Wilson A , Shen C J et al . 2022 . Surface water and groundwater interactions in salt marshes and their impact on plant ecology and coastal biogeochemistry . Reviews of Geophysics , 60 ( 1 ): e2021 RG 000740 , http://doi.org/10.1029/2021RG000740 http://doi.org/10.1029/2021RG000740 .

Yamamoto S , Alcauskas J B , Crozier T E . 1976 . Solubility of methane in distilled water and seawater . Journal of Chemical & Engineering Data , 21 ( 1 ): 78 - 80 , http://doi.org/10.1021/JE60068A029 http://doi.org/10.1021/JE60068A029 .

Yau Y Y Y , Xin P , Chen X G et al . 2022 . Alkalinity export to the ocean is a major carbon sequestration mechanism in a macrotidal saltmarsh . Limnology and Oceanography , 67 ( S2 ): S158 - S170 , http://doi.org/10.1002/lno.12155 http://doi.org/10.1002/lno.12155 .

Yuan Y Q . 2021 . Organic Carbon Accumulation and Its Lateral Transportation in A Typical Tidal Creek System of the Yangtze River Estuary . East China Normal University , Shanghai , http://doi.org/10.27149/d.cnki.ghdsu.2021.002917. http://doi.org/10.27149/d.cnki.ghdsu.2021.002917. (in Chinese)

Yuan Y Q , Li X Z , Jiang J Y et al . 2020 . Distribution of organic carbon storage in different salt-marsh plant communities: a case study at the Yangtze Estuary . Estuarine, Coastal and Shelf Science , 243 : 106900 , http://doi.org/10.1016/j.ecss.2020.106900 http://doi.org/10.1016/j.ecss.2020.106900 .

Yuan Y Q , Li X Z , Xie Z L et al . 2022 . Annual lateral organic carbon exchange between salt marsh and adjacent water: a case study of east headland marshes at the Yangtze Estuary . Frontiers in Marine Science , 8 : 809618 , http://doi.org/10.3389/fmars.2021.809618 http://doi.org/10.3389/fmars.2021.809618 .

Zhang X H , Cao F , Huang Y et al . 2022 . Variability of dissolved organic matter in two coastal wetlands along the Changjiang River Estuary: responses to tidal cycles, seasons, and degradation processes . Science of the Total Environment , 807 : 150993 , http://doi.org/10.1016/j.scitotenv.2021.150993 http://doi.org/10.1016/j.scitotenv.2021.150993 .

Zhu P Y , Chen X G , Zhang Y et al . 2022 . Porewater-derived blue carbon outwelling and greenhouse gas emissions in a subtropical multi-species saltmarsh . Frontiers in Marine Science , 9 : 884951 , http://doi.org/10.3389/fmars.2022.884951 http://doi.org/10.3389/fmars.2022.884951 .

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