publication . Article . Other literature type . Conference object . 2017

High permeability explains the vulnerability of the carbon store in drained tropical peatlands

Baird, Andy J.; Low, Robert; Young, Dylan; Swindles, Graeme T.; Lopez, Omar R.; Page, Susan;
Open Access
  • Published: 16 Feb 2017 Journal: Geophysical Research Letters, volume 44, pages 1,333-1,339 (issn: 0094-8276, eissn: 1944-8007, Copyright policy)
  • Publisher: American Geophysical Union (AGU)
  • Country: United Kingdom
Abstract
<p>Tropical peatlands are an important global carbon (C) store but are threatened by drainage for palm oil and wood pulp production. The store's stability depends on the dynamics of the peatland water table, which in turn depend on peat permeability. We found that an example of the most abundant type of tropical peatland—ombrotrophic domes—has an unexpectedly high permeability similar to that of gravel. Using computer simulations of a natural peat dome (NPD) and a ditch-drained peat dome (DPD) we explored how such high permeability affects water tables and peat decay. High permeability has little effect on NPD water tables because of low hydraulic gradients from...
Subjects
free text keywords: General Earth and Planetary Sciences, Geophysics, decay, permeability, tropical peatland, /dk/atira/pure/subjectarea/asjc/1900/1908, /dk/atira/pure/subjectarea/asjc/1900, Earth and Planetary Sciences(all), Peat, Tropics, Ditch, geography.geographical_feature_category, geography, Water table, Hydrology, Drainage, Permeability (electromagnetism), Carbon sequestration, Carbon, chemistry.chemical_element, chemistry, Geology
22 references, page 1 of 2

Anderson, J. A. R. (1983), Tropical peat swamps of western Malesia, in Mires: Swamp, Bog, Fen, and Moor, edited by A. J. P. Gore, pp. 181-199, Elsevier, Amsterdam.

Baird, A. J., B. W. J. Surridge, and R. P. Money (2004), An assessment of the piezometer method for measuring the hydraulic conductivity of a Cladium mariscus-Phragmites australis root mat in a Norfolk (UK) fen, Hydrol. Process., 18, 275-291.

Baird, A. J., P. J. Morris, and L. R. Belyea (2012), The DigiBog peatland development model 1: Rationale, conceptual model, and hydrological basis, Ecohydrology, 5, 242-255, doi:10.1002/eco.230.

Baird, A. J., A. M. Milner, A. Blundell, G. T. Swindles, and P. J. Morris (2016), Microform-scale variations in peatland permeability and their ecohydrological implications, J. Ecol., 104, 531-544, doi:10.1111/1365-2745.12530.

Binley, A., K. Beven, and J. Elgy (1989), Physically based model of heterogeneous hillslopes 2. Effective hydraulic conductivities, Water Resour. Res., 25, 1227-1233, doi:10.1029/WR025i006p01227. [OpenAIRE]

Brady, M. A. (1997), Organic material dynamics of coastal peat deposits in Sumatra, Indonesia, PhD thesis, Univ. of British Columbia, Canada.

Butler, J. J., Jr. (1998), The Design, Performance, and Analysis of Slug Tests, pp. 252, Lewis, Boca Raton, Fla.

Chadwick, R., P. Good, G. Martin, and D. P. Rowell (2015), Large rainfall changes consistently projected over substantial areas of tropical land, Nat. Clim. Change, 6, 177-181, doi:10.1038/nclimate2805.

Chimner, R. A., and K. C. A. Ewel (2005), A tropical freshwater wetland: II. Production, decomposition, and peat formation, Wetl. Ecol. Manag., 13, 671-684. [OpenAIRE]

Corlett, R. T. (2016), The impacts of droughts in tropical forests, Trends Plant Sci., 21, 584-593, doi:10.1016/j.tplants.2016.02.003. [OpenAIRE]

Couwenberg, J., R. Dommain, and H. Joosten (2010), Greenhouse gas fluxes from tropical peatlands in south-east Asia, Global Change Biol., 16, 1715-1732, doi:10.1111/j.1365-2486.2009.02016.x. [OpenAIRE]

den Haan, E. J., A. Hooijer, and G. Erkens (2012), Consolidation Settlements [sic] of Tropical Peat Domes by Plantation Development, Deltares, Delft, Netherlands.

Domenico, P. A., and F. W. Schwartz (1990), Physical and Chemical Hydrogeology, pp. 824, Wiley, New York.

Dommain, R., J. Couwenberg, and H. Joosten (2010), Hydrological self-regulation of domed peatlands in south-east Asia and consequences for conservation and restoration, in Mires and Peat, vol. 6 5, pp. 1-17. [OpenAIRE]

Fábrega, J., T. Nakaegawa, R. Pinzón, and K. Nakayama (2013), Hydroclimate projections for Panama in the late 21st century, Hydrol. Res. Lett., 7, 23-29.

22 references, page 1 of 2
Abstract
<p>Tropical peatlands are an important global carbon (C) store but are threatened by drainage for palm oil and wood pulp production. The store's stability depends on the dynamics of the peatland water table, which in turn depend on peat permeability. We found that an example of the most abundant type of tropical peatland—ombrotrophic domes—has an unexpectedly high permeability similar to that of gravel. Using computer simulations of a natural peat dome (NPD) and a ditch-drained peat dome (DPD) we explored how such high permeability affects water tables and peat decay. High permeability has little effect on NPD water tables because of low hydraulic gradients from...
Subjects
free text keywords: General Earth and Planetary Sciences, Geophysics, decay, permeability, tropical peatland, /dk/atira/pure/subjectarea/asjc/1900/1908, /dk/atira/pure/subjectarea/asjc/1900, Earth and Planetary Sciences(all), Peat, Tropics, Ditch, geography.geographical_feature_category, geography, Water table, Hydrology, Drainage, Permeability (electromagnetism), Carbon sequestration, Carbon, chemistry.chemical_element, chemistry, Geology
22 references, page 1 of 2

Anderson, J. A. R. (1983), Tropical peat swamps of western Malesia, in Mires: Swamp, Bog, Fen, and Moor, edited by A. J. P. Gore, pp. 181-199, Elsevier, Amsterdam.

Baird, A. J., B. W. J. Surridge, and R. P. Money (2004), An assessment of the piezometer method for measuring the hydraulic conductivity of a Cladium mariscus-Phragmites australis root mat in a Norfolk (UK) fen, Hydrol. Process., 18, 275-291.

Baird, A. J., P. J. Morris, and L. R. Belyea (2012), The DigiBog peatland development model 1: Rationale, conceptual model, and hydrological basis, Ecohydrology, 5, 242-255, doi:10.1002/eco.230.

Baird, A. J., A. M. Milner, A. Blundell, G. T. Swindles, and P. J. Morris (2016), Microform-scale variations in peatland permeability and their ecohydrological implications, J. Ecol., 104, 531-544, doi:10.1111/1365-2745.12530.

Binley, A., K. Beven, and J. Elgy (1989), Physically based model of heterogeneous hillslopes 2. Effective hydraulic conductivities, Water Resour. Res., 25, 1227-1233, doi:10.1029/WR025i006p01227. [OpenAIRE]

Brady, M. A. (1997), Organic material dynamics of coastal peat deposits in Sumatra, Indonesia, PhD thesis, Univ. of British Columbia, Canada.

Butler, J. J., Jr. (1998), The Design, Performance, and Analysis of Slug Tests, pp. 252, Lewis, Boca Raton, Fla.

Chadwick, R., P. Good, G. Martin, and D. P. Rowell (2015), Large rainfall changes consistently projected over substantial areas of tropical land, Nat. Clim. Change, 6, 177-181, doi:10.1038/nclimate2805.

Chimner, R. A., and K. C. A. Ewel (2005), A tropical freshwater wetland: II. Production, decomposition, and peat formation, Wetl. Ecol. Manag., 13, 671-684. [OpenAIRE]

Corlett, R. T. (2016), The impacts of droughts in tropical forests, Trends Plant Sci., 21, 584-593, doi:10.1016/j.tplants.2016.02.003. [OpenAIRE]

Couwenberg, J., R. Dommain, and H. Joosten (2010), Greenhouse gas fluxes from tropical peatlands in south-east Asia, Global Change Biol., 16, 1715-1732, doi:10.1111/j.1365-2486.2009.02016.x. [OpenAIRE]

den Haan, E. J., A. Hooijer, and G. Erkens (2012), Consolidation Settlements [sic] of Tropical Peat Domes by Plantation Development, Deltares, Delft, Netherlands.

Domenico, P. A., and F. W. Schwartz (1990), Physical and Chemical Hydrogeology, pp. 824, Wiley, New York.

Dommain, R., J. Couwenberg, and H. Joosten (2010), Hydrological self-regulation of domed peatlands in south-east Asia and consequences for conservation and restoration, in Mires and Peat, vol. 6 5, pp. 1-17. [OpenAIRE]

Fábrega, J., T. Nakaegawa, R. Pinzón, and K. Nakayama (2013), Hydroclimate projections for Panama in the late 21st century, Hydrol. Res. Lett., 7, 23-29.

22 references, page 1 of 2
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