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The response of dissolved organic carbon (DOC) and the ecosystem carbon balance to experimental drought in a temperate shrubland

Authors
Publisher
Wiley-Blackwell Publishing Ltd.
Publication Date
Keywords
  • Climate Change Has Been Proposed As A Driver Of Carbon (C) Loss From The Large Pool Of C Held In Soi
  • Aqueous (Dissolved Organic Carbon
  • Doc) And Gaseous (Soil Respiration Or Net Ecosystem Co2 Exchange) Forms Of C Loss From Soils Have Be
  • Under Some Climate Change Scenarios
  • Gaseous Emissions Of C Have Been Predicted To Result In Terrestrial Ecosystems Becoming A Net Source
  • Indeed
  • Both Forms Of C Loss Have Been Linked To Climate-Related Changes
  • Such As Warming And/Or Changes In Precipitation
  • In Our Field-Based Drought Manipulation Experiment On An Upland Moorland In Northeast Wales
  • We Have Carried Out An Annual Drought Treatment For 8 Years
  • Reducing Levels Of Annual Rainfall By 23% On Average (1999–2007) Through The Use Of Automated Roof
  • Which Prevent Rain Falling On Experimental Plots Between June And September Annually
  • Following 5 Years Of Repeated Summer Drought
  • There Was A 26% Increase In Concentrations Of Doc In Soil Water In The Mineral Soil In The Drought P
  • A Similar Pattern Was Not Observed In The Organic Soil Horizons
  • Despite Higher Doc Concentrations In The Mineral Soil Horizon
  • Decreased Drainage Of Water From The Drought-Treated Soils Resulted In An Overall Decrease Of 9% In
  • Calculating The Carbon (C) Balance For The Below-Ground Component Of The Ecosystem Reveals That Doc
  • Previous Studies At The Site Have Demonstrated Large Increases In Soil Respiration Resulting From Th
  • By Including Data Presented Here With Other C Fluxes And Pool Measurements From The Site
  • We Demonstrate That Soil Carbon Is Accumulating By 126 G C M−2 Year−1 In The Control Plots
  • But Decreasing By 18 G C M2 Year−1 In The Drought Plots
  • The Repeated Drought Treatment Has Thus Resulted In The Ecosystem Switching From A Net Sink For C In
Disciplines
  • Biology
  • Ecology

Abstract

The response of dissolved organic carbon (DOC) and the ecosystem carbon balance to experimental drought in a temperate shrubland - DTU Orbit (18/03/14) The response of dissolved organic carbon (DOC) and the ecosystem carbon balance to experimental drought in a temperate shrubland - DTU Orbit (18/03/14) Sowerby, A.; Emmett, B.A.; Williams, D.; Beier, Claus; Evans, C.D. / The response of dissolved organic carbon (DOC) and the ecosystem carbon balance to experimental drought in a temperate shrubland. In: European Journal of Soil Science, Vol. 61, No. 5, 2010, p. 697-709. Publication: Research - peer-review › Journal article – Annual report year: 2010

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