GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 GLC 2000 land cover map of the desert locust recession area First results E. Bartholomé, JRC Ispra M. Cherlet, FAO Rome

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 The desert locust recession area 19°W – 80°30’E, 46°N – 4°N Main focus on drylands

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Input data S10 NDVI for 2000 Re-scaled in vegetation cover percentage Soil effect removed (per-pixel method) Temporal profile smoothed (see ad hoc presentation)

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Based on temporal profiles Rigid tresholds on: Max vegetation cover in 2000 Season duration Classification procedure cover time 1/3 Seasonality: max in summer or winter, or double seasonality

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Rationale Cover max –corresponds to max development of vegetation –Best correlates with above-ground biomass duration Duration close to phenological definition, but time lag

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Classes Max cover Growth duration 1 BARE AREAS 2 SPARSE HERBACEOUS VEGETATION - NOT ANNUAL - TBC 3 SPARSE HERBACEOUS VEG 4 CLOSED-OPEN HERBACEOUS VEG 5 SPARSE DECIDUOUS SHRUB AND SPARSE HERBACEOUS VEGETATION 6 OPEN DECIDUOUS SHRUB AND OPEN HERBACEOUS VEGETATION 7 SPARSE DECIDUOUS SHRUB AND SPARSE HERBACEOUS VEGETATION AND SPARSE TREE LAYER 8 OPEN DECIDUOUS SHRUB AND OPEN HERBACEOUS VEGETATION AND SPARSE TREE LAYER 9 CLOSED-OPEN DECIDUOUS SHRUB AND CLOSED- OPEN HERBACEOUS VEGETATION AND OPEN TREE LAYER 10 NOT DEFINED 100% 5% 75% 50% 25% 10% months The same applies for winter vegetation and double season growth

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Result

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Close-up (1) Sarir (Libya) Irrigated agriculture

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Close-up (2) Luxor (Egypt) double growing season

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Close-up (3) Senegal - Mauritania

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Observation 1 Noise in the 3-5% cover range Haruj es Sawda Volcano (Libya)

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Observation 2 Specific year 2000 situation Land cover map

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 Observation 3 Cropland not detected per se: low % of surface

GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002 conclusions The method seems efficient for dryland vegetation (bare soil correctly mapped!) The method is sensitive to the specific year for very sparse vegetation Some “soil contamination” Need for regional analysis to label the land cover classes