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Workshop on climatic analysis and mapping for agriculture (14-17 june 2005, Bologna, Italy). The multivariate and multi-regressive techniques in the spatial representation of agrometeorological data for the Piedmont (North-West Italy) areas.

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Workshop on climatic analysis and mapping for agriculture

(14-17 june 2005, Bologna, Italy)

The multivariate and multi-regressive

techniques in the spatial

representation of agrometeorological

data for the

Piedmont (North-West Italy) areas

Federico Spanna: Regione Piemonte - Agrometeorological Service [email protected]

Alberto Rainero: S.I.T. – Alessandria County Council

[email protected]


Contents
Contents

  • Context, aim, method

  • Multivariate analysis

  • Spatial representation


Territorial representation
Territorial representation

Contoured map showing

elevation

50 % mountainous

30 % plain

20 % hill


Distribution of meteorological stations
Distribution of meteorological stations

150 agrometeorological

stations (RAM)

300 hydrographic station


Aim

Georepresentation of

agrometeorological variables

as influenced by land morphology


Methodology
Methodology

  • Analysis and selection of main morphological informations

  • Individuation of homogeneous agrometeorological areas (multivariate analysis)

  • Spatial representation (statistical multiregressive analysis)


Contents1
Contents

  • Context, aim, method

  • Multivariate analysis

  • Spatial representation


Morphological features 1 agrarian landscape map
Morphological features:1- agrarian landscape map

3 perceptive levels

Scale 1:100.000

Cultivation

Agrarian

trend


Morphological features 2 soil yield
Morphological features: 2 – soil yield

9 classes

Scale 1:100.000

Potential soil use for crops


Morphological features 3 corine coverage
Morphological features: 3 – Corine coverage

44 classes

Scale 1:100.000

Actual soil use


Morphological features 4 morphology
Morphological features: 4 - morphology

Piedmont Digital Elevation

Model (DEM)

Scale 1:100.000

Height

Slope

Exposure

Distance from valley bottom


Territorial information found

Description of morphological and

topological parameters

Slope

Exposure

Height

Yield soil use

Corine coverage

Categorical qualitative table

Multivariate analysis

Homogeneous areas features

Territorial information found


Aggregation classes

91 typologies

8 cluster

(homogeneous areas)

Aggregation classes

92 stations


Objective function

8 areas

Objective function


Contents2
Contents

  • Context, aim, method

  • Multivariate analysis

  • Spatial representation


Homogeneous areas representation
Homogeneous areas representation

Watershed

Borough boundaries


Spatial interpolation algorithm

Meteo information M

Spatial interpolation Algorithm

Station cluster

Influence territorial area

Morphological parameters

Morphological

parameters xi

?

M=F(xi)

Meteo information synthesis


Multiregressive analysis

Morphological variables: independent

H, S , E , D

Meteo information: dependent variable

M

Multiple regression

Multiregressive analysis

Height, Slope, Exposure, River bed distance

M= F(xi)

M= kp*H + kd*S + ke*E + kq*D


Substrata superposition

+H

+E

+D

+S

M

*kh

*ke

*kd

*ks

Substrata superposition


Coefficient exploration

All (92)

station

Mean of

T min

2003

0,139

Area 1

Stations

Mean of

T min

february

0,791

Area 1

Stations

Mean of

T max

autumn

0,784

Coefficient exploration

Dependent

variable

Performance

(R2 )

Sample

Period


Traditional representation
Traditional representation

Field of

Temperature

range



Barolo area

Mean of T min – 02/03

“Barolo” Area



Asti and cuneo province area 2

Mean of T mean - Spring 02/03

Asti andCuneo ProvinceArea 2


Asti and cuneo province area 21
ASTI andCuneo ProvinceArea 2


Conclusions

Production of useful supports for local advisors and farmers

Conclusions

Innovative and significant methodology

for a “young”agrometeorological region

Map developing of the most important climatic indexes (ex. Winkler, Huglin, Thermal excursions etc.)



Area del barolo
Area del Barolo


Aree dell astigiano e del cuneese
Aree dell’Astigiano e del Cuneese


Area dell astigiano
Area dell’Astigiano


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