Presentation on theme: "The LUCAS project Land Use / Cover Area Frame Survey"— Presentation transcript:
2 The LUCAS project Land Use / Cover Area Frame Survey Marco FRITZEuropean CommissionEurostat, E1 - Agricultural Statistics. Methodology: LUCASOffice address: BECH C2/6145, rue Alphonse Weicker, L-2721 LuxembourgTel.:Fax:
4 What is LUCAS? An area frame survey: Objectives Statistical method based on the visual observation of sampled geo-referenced points to compute area estimatesObjectivesTo obtain harmonised data at EU25 level on:Land use and Land coverEnvironmental featuresTo provide a common methodology-nomenclature ensuring full comparability of resultsTo calculate early estimates of areas (main crops) in June/JulyTo analyse the interaction agriculture-environment-landscape (multi-purpose survey)
5 What is LUCAS? - Calendar of activities survey carried out in 13 MSsurvey carried out in UK and IE and in EE-HU-SIsurvey carried out in 15 MS + Hungarysurvey carried out in LT-LV-PLsurvey carried out in 11 MS+ PHARE Multi-Country 2000 and 2003 Programmes on Sectoral Pilot Projects in Agriculture and Environment Statistics
6 What is LUCAS? Coverage 200188030 points surveyed
9 Methodology: Sampling Design 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° EastOrigin: meters west, meters south of centre pointnodes = base sample pointsMaster sample (even points of the base sample):2km grid: about 1 Mio sample pointsPhoto-interpretation of all master sample points into 7 strata:arable landpermanent cropsgrassland,wood/shrubland,bare land, low or rare vegetation,artificial landwater
12 Methodology: Data collected 407 surveyors and 39 supervisors have collected the following data:Land coverLand usePoint and crop photosLandscape photos (5 to 6 photos/point in 2006= ~ photos. Estimated size : 1.5 Tb)On average:13 points surveyed/day400 points/surveyor30 days of work/surveyor
24 Conclusions LUCAS is not covering all countries Sampling focused on agricultural area but also covering all strataStratification availableAround photos taken. Photos have to be checked and “anonymised” before transmissionFollow-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” featuresPhoto-interpretation is not an easy process without ground information (confusion matrix) …
25 Further conclusion… nor is it observing on the ground!
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