Methodological cues for the analysis of the terraced slope in the pilot area Pianazzola-Bregaglia Data Sheet Analysis 1:5000

Transcription

1 Project Alpter Methodological cues for the analysis of the terraced slope in the pilot area Pianazzola-Bregaglia Data Sheet Analysis 1:5 Alice G. Dal Borgo - Human Geography Institute, State University of Milan Tecla Pagnoncelli - Earth Science Department, State University of Milan Trans-national Meeting 1-13 October 6 Goriska Brda (SLO)

2 Project Alpter Definition of selection criteria of the sub-areas for the 1:5 analysis through: Analysis of the geological and anthropic features of the pilot area Analysis of the geomorphological elements of the sub- area Pianazzola such as slope, exposure, geometry of terracing, state of conservation of walls and crops

3 Project Alpter Selected criteria for the choice of the sub-areas for the 1:5 analysis: Average slope Slope concavity convexity Altimetry Exposition - Aspect Land use

4 Project Alpter Selected sub-areas typologies for the 1:5 data sheet analysis: Active / abandoned vineyard Copsy / fruit chestnut Vineyard + pasture / forage Vineyard + self-consumption horticulture / orchard

5 Project Alpter Utilised analysis tools: Technical regional map Actual cadastral map Historic cadastral map Digital images Geomorphological map

6 Vineyard Orchard Final Products Forage/grass Chestnut Soil sampling and tests in situ

7 Final Products Data sheet 1:5 example: Cultivated thalweg

8 Paragraph B1 foundation laid on It could be useful to add the little box for the X beside the option. slope of walls (see (B1) STATISTICAL ANALYSIS OF THE GEOMETRICAL FEATURES) We introduced a value in degrees that varies from hypothetical (the wall is completely stretched towards the mountain) passing through 9 (the wall is perfectly vertical) to another hypothetical 18 (the wall is completely collapsed towards the valley). slope of stripes slope of stripes We introduced a value in degrees that varies from (the stripe is perfectly horizontal) to 9 (hypothetical completely vertical stripe).

9 Paragraph B3 water channel system overlapping with paths slope direction of stripes It could be useful to add the little box for the X beside the option; Channel systems are intended like natural or/and anthropic? Paragraph B access to the area (actual) It could be useful to add the little box for the X beside the option.

10 Paragraph D state of decay It could be useful to add the little box for the X beside the option. Paragraph E Property It could be useful to add the little box for the X beside the option.

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12 (B1) STATISTICAL ANALYSIS OF THE GEOMETRICAL FEATURES: INTRODUCTION THE AIM OF THE STATISTICAL ANALYSIS IS : - TO DEFINE STANDARD TYPOLOGIES OF TERRACING, USING SURVEYED GEOMETRICAL PARAMETERS - TO EVALUATE THE RELATIONSHIP BETWEEN THESE STANDARD TYPOLOGIES AND THE: the GEOMORPHOLOGICAL SETTING and the LAND USE - TO VERIFY THE APPLIABILITY OF STANDARD TYPOLOGIES TO TERRACED AREAS LOCATED OUT OF THE PIANAZZOLA PILOT AREA.

13 (B1) STATISTICAL ANALYSIS OF THE GEOMETRICAL FEATURES: 3D SCHEME L = LENGTH OF THE STRIPE H = HEIGHT OF THE WALL β = SLOPE OF THE STRIPE α = SLOPE OF THE WALL* P = WIDTH OF THE STRIPE

14 (B1) STATISTICAL ANALYSIS OF THE GEOMETRICAL FAETURES: 3D SCHEME a = SLOPE OF THE WALL* Paragraph B - We introduced a value in degrees that varies from an hypothetical (the wall is completely stretched towards the mountain) passing through 9 (the wall is perfectly vertical) to another hypothetical 18 (the wall is completely collapsed towards the valley).

15 H = HEIGHT OF THE WALL Project Alpter NUMBER OF MEASURES WALL HEIGHT FREQUENCY DIAGRAM ,5,51-1 1,1-1,5 1,51-,1-,5,51-3 3,1-3,5 3,51- n.1=17 n.=18 (1 set of measure) ( set of measure) RANGE OF HEIGHT ( H =.5 m) 1 SET OF MEASURES AVERAGE VALUE =,8 MINIMUM VALUE =, MAXIMUM VALUE =, MODAL VALUE = 1, STANDARD DEVIATION = 1,3 SET OF MEASURES AVERAGE VALUE = 1,3 MINIMUM VALUE =, MAXIMUM VALUE =, MODAL VALUE = 1,5 STANDARD DEVIATION =,59

16 H = HEIGHT OF THE WALL Project Alpter WALL HEIGHT FREQUENCY DIAGRAM n.=35 NUMBER OF MEASURES ,5,51-1 1,1-1,5 1,51-,1-,5,51-3 3,1-3,5 3,51- RANGE OF HEIGHT ( H =.5 m) AVERAGE VALUE = 1,6 MINIMUM VALUE =, MAXIMUM VALUE =, MODAL VALUE = 1, STANDARD DEVIATION =,8

17 L = LENGHT OF THE STRIP Project Alpter NUMBER OF MEASURE LENGTH WALL FREQUENCY DIAGRAM n.= ,1-1 1, ,1- NUMBER OF MEASURES LENGTH WALL FREQUENCY DIAGRAM ,1-1 1, ,1- n.1=17 n.=18 1' set of measure ' set of measure RANGE OF LENGHT ( L = 5 m) RANGE OF LENGHT ( L = 5 m) AVERAGE VALUE = 1,8 MINIMUM VALUE =,7 MAXIMUM VALUE = MODAL VALUE = 1 STANDARD DEVIATION =,39 1 SET OF MEASURES AVERAGE VALUE = 1,7 MINIMUM VALUE =,7 MAXIMUM VALUE = 1,7 MODAL VALUE = STANDARD DEVIATION =, SET OF MEASURES AVERAGE VALUE = 1,9 MINIMUM VALUE = 9 MAXIMUM VALUE = 19 MODAL VALUE = 1 STANDARD DEVIATION =,3

18 α = SLOPE OF THE WALL Project Alpter Range of slope (angle ) α= 5 α > 9 α < 9 downslope upslope

19 P = WIDTH OF THE STRIPE Project Alpter NUMBER OF MEASURES WIDTH STRIPE FREQUENCY DIAGRAM n.=35 1 1,5-1 1,1-1,5 1,51-,1-,5,51-3 3,1-3,5 3,51- NUMBER OF MEASURE WIDTH STRIPE FREQUENCY DIAGRAM ,5-1 1,1-1,5 1,51-,1-,5,51-3 3,1-3,5 3,51- RANGE OF WIDTH ( P =.5 m) n.1=17 n.=18 1' set of measure ' set of measure RANGE OF WIDTH ( P =.5 m) AVERAGE VALUE = 1,67 MINIMUM VALUE = 1 MAXIMUM VALUE = MODAL VALUE = 1,5 STANDARD DEVIATION =,67 1 SET OF MEASURES AVERAGE VALUE = 1,63 MINIMUM VALUE = 1 MAXIMUM VALUE = MODAL VALUE = 1, STANDARD DEVIATION =,85 SET OF MEASURES AVERAGE VALUE = 1,61 MINIMUM VALUE = 1, MAXIMUM VALUE =,9 MODAL VALUE = 1,5 STANDARD DEVIATION =,8

20 Project Alpter β = SLOPE OF THE STRIPE SLOPE STRIPE FREQUENCY DIAGRAM n.=35 SLOPE STRIPE FREQUENCY DIAGRAM n.1=17 NUMBER OF MEASURE ,1-1 1, ,1-,1-5 5,1-3 3, ,1-,1-5 NUMBER OF MEASURE ,1-1 1, ,1-,1-5 5,1-3 3, ,1-,1-5 1 n.=18 1' set of measure ' set di misure RANGE OF SLOPE ( β = 5 ) RANGE OF SLOPE ( β = 5 ) AVERAGE VALUE = 17,9 MINIMUM VALUE = 5 MAXIMUM VALUE = 5 MODAL VALUE = 1 STANDARD DEVIATION = 1,38 1 SET OF MEASURES AVERAGE VALUE = 19,58 MINIMUM VALUE = 5 MAXIMUM VALUE = 5 MODAL VALUE = 1 STANDARD DEVIATION = 1,8 SET OF MEASURES AVERAGE VALUE = 15,83 MINIMUM VALUE = 5 MAXIMUM VALUE = 37 MODAL VALUE = 1 STANDARD DEVIATION = 1,17

21 Project Alpter PRODUCTS OF STATISTICAL ANALYSIS OF THE GEOMETRICAL FEATURES: GEOMETRICAL CHARACTERIZATION OF 13 SUB-AREAS COMPLETED INDIVIDUATION OF STANDARD GEOMETRIES AND DEFINITION OF THEIR RELATIONSHIP TO BOTH THE GEOMORPHOLOGICAL SETTING and the LAND USE IN PROGRESS

22 Project Alpter Other activities: FIELD TESTS by permeability tests in situ (Guelph Permeameter,Double ring infiltrometer) LABORATORY TESTS soil sampling for geotechnical characterization Choice of a terraced area and installation of monitoring instruments (tensiometers) Research of a terraced area suitable to the recovery project

23 Thank you for the Project Alpter attention!!!