measurement plan What How Where When Sébastien Gogo Plan of the workshop Measurement plan in CARE PEAT The case of the Dutch site Discussion ID: 1026388
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1. Workshop : GHG fluxes measurement plan What? How? Where? When?Sébastien Gogo
2. Plan of the workshop Measurement plan in CARE PEAT The case of the Dutch site Discussion
3. 1.1. What and how do we measure?The whole C budget of the ecosystem? very expensive, a lot of human ressources in CARE-PEAT focus on greenhouse gases CO2 and CH4 budgetWhich technique? many techniques available (profiles, eddy covariance, chamber) in CARE-PEAT : chamber measurements CO2 CH4 Los Gatos Research equipement
4. 1.1. What and how do we measure?CO2GPPGPP : Gross Primary ProductionER : Ecosystem RespirationNEE : Net Ecosystem ExchangeNEE > 0 : source systemNEE < 0 : sink systemEREcosystemSolNEE = ER – GPP
5. 1.1. What and how do we measure?CH4CO2GPPEcosystemSolGPP : Gross Primary ProductionER : Ecosystem RespirationNEE : Net Ecosystem ExchangeNEE > 0 : source systemNEE < 0 : sink systemNEE = ER – GPPER
6. 1.1. What and how do we measure?Time (s)Time (s)NEE = ER - GPPFull light ERDark[CO2](ppm)CO2GPPERCO2ER[CO2](ppm)
7. 1.1. What and how do we measure?Use nets to have the light response of CO2 fluxesNets with different meshAncillary variables, high frequency (1 hour min)Water table depth Air and soil temperatureSolar radiationVegetation % cove Soil water content, if possible
8. 1.2. Where and when do we measure?GHG budget before and after restoration works? not possible, need of many years timeseries in CARE-PEAT: focus on comparison between restored and control area to assess the effect of restoration actions on GHG budgetMeasuring plotsSub-area RESTORED #1Sub-area RESTORED #2Sub-area CONTROL #2Sub-area CONTROL #1SiteRESTORED areaCONTROL areaTo better take into account the spatial heterogeneity
9. 1.2. Where and when do we measure?La GuetteControlStripped + SphagnumSITEAREASUB-AREAMoliniaEricaSphagnumBare peatREPLICATEx3x3x3x3 French pilotMeasurement at what frequency? At least 12 campaigns 1 light response curve per plot, per campaign
10. 1.3. To do what with the data?From low frequency data to annual budget? FLUXVariablea) Time series from field campaignsb) Models buildingFLUX = a.VARIABLE + bc) Variables measurement at high frequencyd) Calculation of high frequency flux time seriese) Integration of the fluxes to obtain the yearly GHG budget
11. 1.4. Modeling approach in CARE-PEATMethods and toolsUO, NUIG, MMUAll pilot managersBRGMWP T3Model based on vegetationAll pilot managersUO, NUIG, MMUDecision Support ToolBRGMThe whole consortium (associate partners)WP LT peatland managers
12. 2. The Dutch sitebare peat under waternatural succession towards Phragmitesbare peat under water and floating matsnatural succession towards PhragmitesPeatWater
13. bare peat under waternatural succession towards Phragmitesbare peat under water and floating matsnatural succession towards PhragmitesPeatWaterWhat do we do?2. The Dutch site