Transcript Slide 1
Quantitative information on agriculture and water use Maurits Voogt Chief Competence Center Content • • • • • Introduction Technology Regional scale information Field scale data Applications INTRODUCTION Introduction eLEAF • Since 2000 • Wageningen based • Global experience • Agricultural water management • Crop monitoring • PiMapping® Experience on all continents What is PiMapping® ? Pixel Intelligence Mapping PiMapping® technology is a toolbox of algorithms: • Based on satellite imagery and meteo data • Resulting in quantative data in mm, kg, °C, etc • Information on Water, Vegetation & Climate Detailed quantitative data such as Biomass Production [kg/ha] eLEAF’s data components Data Components WATER Actual Evapotranspiration (E, T, interception), precipitation, top soil moisture, water stress, storage change reservoirs, storage change aquifers, water productivity, water accounting, irrigation performance VEGETATION Actual biomass production, Land cover, Fractional vegetation cover, Leaf Area Index LAI, fPAR, crop coefficient, crop yield, CO2 flux, sowing date, harvest date, physical land degradation, anthropogenic land degradation CLIMATE Surface temperature, air temperature, air humidity, wind speed, cloud cover, solar radiation, sensible heat flux (H), latent heat flux (LE) TECHNOLOGY HOW DOES IT WORK? Energy balance • SEBAL: Surface Energy Balance Algorithm for Land • Successor: ETLook SEBAL Vegetation index albedo, temperature, cloud cover Weather station data Actual water use B io d t production and yield A P A R t tBiomass Rn G c p ET es ea r 1 s 24 ra ra REGIONAL INFORMATION GSCP Yemen • Groundwater and Soil Conservation Project • Objective: quantify ground water abstraction Actual water use How much water is used in 2006? Actual water use Overconsumption Yemen • Average: 139 mm/year • Locally up to 1000 mm/year FIELD SCALE DATA FieldLook.com FieldLook.com Weekly updates: • Growth • Moisture • Minerals • Returns Available in: • Spain, Canada, Russia, Ukraine, South Africa, Netherlands, Belgium In field variability 25 March 23 July 25 May 12 Aug 4 Sept 7 July 8 Sept Just NDVI...? • Smooth NDVI curve • Biomass production varies from week to week [kg/ha/wk] • Actual transpiration [mm/wk] • Transpiration deficit [mm/wk] Satellite imagery eLEAF requires satellite imagery on: • High resolution • Large areas • Daily updates APPLICATIONS Applications eLEAF’s data components can be used: • For monitoring • To advice • In automated applications Monitor: water productivity 2004-5 Spatial distribution of good and bad practices. Learn from each other and improve to the same level. 2005-6 0.015 frequency 2004-5 0.010 0.005 0.000 0 150 300 450 600 liters water needed to produce 1 liter of wine 750 Advice: haulm killing Van Es Rosetta: • Haulm killing is planned on September 5 • Heterogeneous crops on September 4 • Dosing of chemicals should vary as well Applications: Irrigation planner • PiMapping® technology measures and forecasts soil moisture • Irrigation planner indicates when irrigation is required Value Adding Partners eLEAF is building a global network of Value Adding Partners • What can you do with quantative data? Thank you for your attention [email protected] Chief Competence Center