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Harmonization of Soil Information in the Alps Technical and Operational Procedures Harmonization of Soil Information in the Alps Technical and Operational.

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Presentation on theme: "Harmonization of Soil Information in the Alps Technical and Operational Procedures Harmonization of Soil Information in the Alps Technical and Operational."— Presentation transcript:

1 Harmonization of Soil Information in the Alps Technical and Operational Procedures Harmonization of Soil Information in the Alps Technical and Operational Procedures Swiss-Italian ECALP Pilot Area Stefano Brenna, Alberto Rocca ERSAF – Agency for Agriculture and Forests - Lombardy Stefano Brenna, Alberto Rocca ERSAF – Agency for Agriculture and Forests - Lombardy Ispra, 3-4 February 2005

2 Swiss-Italian ECALP pilot area Lombardy - state of art topics cartographic issues exchange format first results workplan topics cartographic issues exchange format first results workplan

3 ECALP GIS Layer: administrative boundaries and lakes Coordinate system: ETRS-LAEA ECALP GIS Layer: administrative boundaries and lakes Coordinate system: ETRS-LAEA Switzerland Italy, Lombardy Cartographic issues - Swiss-Italian Pilot Area geographysurface distribution UnitKmItalySwitzerlandbordertotal [Xmin,Ymin][4236, 2522]pixel Range X[ ]area (km 2 ) Range Y[ ]area (%)60.839,2100

4 Result of spatial overlay of ERSAF GIS layer with ECALP GIS layer: Projection to Lambert coordinate system area pro Switzerland area pro Italy area not present in ECALP data ERSAF GIS Layers: soil and land use maps (scale 1: ) coordinate system: origin: Gauss-Boaga West destination: ETRS_LAEA DATUM transformation ED_1950 to WGS_1984_1 ERSAF GIS Layers: soil and land use maps (scale 1: ) coordinate system: origin: Gauss-Boaga West destination: ETRS_LAEA DATUM transformation ED_1950 to WGS_1984_1 surface distribution ItalySwitzerlandbordertotal pixel200 (218) 125 (127) 75 (55) 400 area (km 2 ) area (%)

5 1 over information2 lack of information 3 both over and lack of information 4 no information (in theory) Geometric incongruity of the maps at the Swiss-Italian border Possible situations for shared pixels

6 Grid transformation in Gauss-Boaga West coordinate system - grid is not perfectly squared - grid cells sides are segmented - grid cells area: 0,9992 km 2 comparing the percentage of cell occupied by SMU in Lambert and Gauss-Boaga West coordinate system: difference between the two cases fits a Gaussian distribution: mean value 0,08 km 2 and standard deviation 6,4 km 2 ; no perfect equivalence: error is often relevant (up to 16 %) comparing the percentage of cell occupied by SMU in Lambert and Gauss-Boaga West coordinate system: difference between the two cases fits a Gaussian distribution: mean value 0,08 km 2 and standard deviation 6,4 km 2 ; no perfect equivalence: error is often relevant (up to 16 %) ECALP GIS layer: alpine 1k grid coordinate system: origin: ETRS_LAEA destination: Gauss-Boaga West ECALP GIS layer: alpine 1k grid coordinate system: origin: ETRS_LAEA destination: Gauss-Boaga West

7 Exchange format ver. 6.2 comments and remarks AGRI-USE Which uses are considered agricultural uses? Other limitations, often more relevant for agriculture, can occur, such as slope gradient, slope shape, climate, … AGLM could be identify as pedological limitation to agricultural use. Other limitations, often more relevant for agriculture, can occur, such as slope gradient, slope shape, climate, … AGLM could be identify as pedological limitation to agricultural use. AGLM1.AGLM2 TEXT-TOP-SEC In the Lombardy soil database: only modal attributes of STU are usually formalised: secondary information is not available. texture classes proposed are rather wide: soils having so different textures belong to different STU. In the Lombardy soil database: only modal attributes of STU are usually formalised: secondary information is not available. texture classes proposed are rather wide: soils having so different textures belong to different STU.

8 WM1, WM2 Information not available because it is not an attribute of STU (information more related to land than to soil) PX-OBS PX-NPROF Information accuracy in the pixel depends on the scale of the soil survey carried out in the area and not on the number of soil observations. profiles other field observations Exchange format ver. 6.2

9 First results Source of data:land use map (DUSAF) SUR-BARE, SUR-URB, W-Body, STU-TOT soil map (scale 1: ) other parameters Switzerland (total/dominant) Lombardy (total/dominant) Prealps (Po Plain and) Morainic hills Lakes Swiss-Italian Pilot area Soil Regions

10 Land Use WRB Soil Reference Groups lakes seeding pasture-land forest (conifers, broadleaf) urban CM - Cambisols LP - Leptosols LU - Luvisols PH - Phaeozems UM – Umbrisols Lakes First results

11 provided: method to identify the dominant STU occurring in the pixels by means of Microsoft Access database query under construction: web utility to get the possibility to see grid maps and data stored in the pixel provided: method to identify the dominant STU occurring in the pixels by means of Microsoft Access database query under construction: web utility to get the possibility to see grid maps and data stored in the pixel Support tools

12 pixel IDSMU IDarea 4236_ , _ , _ ,116 SMU IDSTU ID STU/SMU % % % % % % pixel IDSMU IDSMU areaSTU ID % STU/SMU STU area 4236_ % _ % _ % _ , % _ , % _ , %0.116 method to identify the dominant STU dominant STU

13 Work plan Integrating Swiss experience and contribution Assessing geometric incongruity at the border Identifying rules for shared pixels Filling the database Field excursion: th of February (to be confirmed) For the future: INTERREG project (?) Integrating Swiss experience and contribution Assessing geometric incongruity at the border Identifying rules for shared pixels Filling the database Field excursion: th of February (to be confirmed) For the future: INTERREG project (?) Next steps – ECALP Pilot Area

14 Thanks for your attention!


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