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The LUCAS project L and U se / C over A rea Frame S urvey

The LUCAS project L and U se / C over A rea Frame S urvey. Marco FRITZ European Commission Eurostat, E1 - Agricultural Statistics. Methodology: LUCAS Office address: BECH C2/614 5, rue Alphonse Weicker, L-2721 Luxembourg Tel.: +352 4301 35113 Fax: +352 4301 37317

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The LUCAS project L and U se / C over A rea Frame S urvey

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  1. The LUCAS project Land Use / Cover Area Frame Survey Marco FRITZ European Commission Eurostat, E1 - Agricultural Statistics. Methodology: LUCAS Office address: BECH C2/614 5, rue Alphonse Weicker, L-2721 Luxembourg Tel.: +352 4301 35113 Fax: +352 4301 37317 e-mail: marco.fritz@ec.europa.eu http://forum.europa.eu.int/irc/dsis/landstat/info/data/index.htm

  2. What is LUCAS? Methodology Results Conclusions

  3. What is LUCAS? • An area frame survey: • Statistical method based on the visual observation of sampled geo-referenced points to compute area estimates • Objectives • To obtain harmonised data at EU25 level on: • Land use and Land cover • Environmental features • To provide a common methodology-nomenclature ensuring full comparability of results • To calculate early estimates of areas (main crops) in June/July • To analyse the interaction agriculture-environment-landscape (multi-purpose survey)

  4. What is LUCAS? - Calendarof activities • 2001 - survey carried out in 13 MS • 2002 - survey carried out in UK and IE and in EE-HU-SI • 2003 - survey carried out in 15 MS + Hungary • 2005 - survey carried out in LT-LV-PL • 2006 - survey carried out in 11 MS • + PHARE Multi-Country 2000 and 2003 Programmes on Sectoral Pilot Projects in Agriculture and Environment Statistics

  5. What is LUCAS? Coverage 2001 88030 points surveyed

  6. What is LUCAS? Coverage 2006 169943 points surveyed

  7. What is LUCAS? Methodology Results Conclusions

  8. Base sample: Uniform square grid of 1km side length over the entire territory of the EU Member States: ETRS89 Lambert Azimuthal Equal Area coordinate reference system (ETRS-LAEA): Centre point: 52°North 10° East Origin: 4.321.000 meters west, 3.210.000 meters south of centre point 4.025.583 nodes = base sample points Master sample (even points of the base sample): 2km grid: about 1 Mio sample points Photo-interpretation of all master sample points into 7 strata: arable land permanent crops grassland, wood/shrubland, bare land, low or rare vegetation, artificial land water Methodology: Sampling Design

  9. Methodology: Stratification results

  10. Methodology: Process Image 2000 1.000.000 points Photo-Interpretation Ortho-Photos Sampling 250.000 points Survey Compute statistics

  11. Methodology: Data collected • 407 surveyors and 39 supervisors have collected the following data: • Land cover • Land use • Point and crop photos • Landscape photos (5 to 6 photos/point in 2006= ~1.000.000 photos. Estimated size : 1.5 Tb) • On average: • 13 points surveyed/day • 400 points/surveyor • 30 days of work/surveyor

  12. Methodology: Nomenclature 55 classes 33 classes

  13. 40 m 40 m 3 m 3 m Methodology: Observations on the ground... Reaching the points Observing the features in the field

  14. What is LUCAS? Methodology Results Conclusions

  15. Results: Comparison Stratification/Ground survey CZ

  16. Results: Accuracy • Accuracy required by Council Regulations (EEC) N° 959/93 on other crop statistics and (EEC) N° 837/90 on cereals production :

  17. Results: LUCAS 2006 Survey – CZ (before QC)

  18. Results: LUCAS 2006 Survey – EU11

  19. Results: LUCAS 2006 Survey – CZ

  20. What is LUCAS? Methodology Results Conclusions

  21. Conclusions • LUCAS is not covering all countries • Sampling focused on agricultural area but also covering all strata • Stratification available • Around 1.000.000 photos taken. Photos have to be checked and “anonymised” before transmission • Follow-up evaluation of landscape classification, Grid data combination, comparison with other surveys, further use of LUCAS data, technological watch. Call for tender for “erosion risk” features • Photo-interpretation is not an easy process without ground information (confusion matrix) …

  22. … nor is it observing on the ground! Further conclusion

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