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Assessment process in the delimitation of historic urban landscape of Algiers by AHP Cover

Assessment process in the delimitation of historic urban landscape of Algiers by AHP

Open Access
|Apr 2021

Figures & Tables

Figure 1

Map of the location of the central, historic urban area of Algiers.Source: own study
Map of the location of the central, historic urban area of Algiers.Source: own study

Figure 2

The conceptual framework for the process of delimitation of landscape in the historical urban area context.Source: own study
The conceptual framework for the process of delimitation of landscape in the historical urban area context.Source: own study

Figure 3

Map Historical Evolution of Algiers on Year 1880 locationSource: based on map dating from 1880
Map Historical Evolution of Algiers on Year 1880 locationSource: based on map dating from 1880

Figure 4

Map of natural elements in the central historic urban area of AlgiersSource: own study
Map of natural elements in the central historic urban area of AlgiersSource: own study

Figure 5

Map of historical centrality of AlgiersSource: own study
Map of historical centrality of AlgiersSource: own study

Figure 6

Map of heritage concentration and recognition in the central historic urban area of AlgiersSource: own study based on information from PDAU Algiers
Map of heritage concentration and recognition in the central historic urban area of AlgiersSource: own study based on information from PDAU Algiers

Figure 7

Map of distinguishing elements of the central historic urban area of Algiers.Source: own study
Map of distinguishing elements of the central historic urban area of Algiers.Source: own study

Figure 8

Criterion value ranking in the landscape configuration of the casbah Algiers (P1)Source: own study
Criterion value ranking in the landscape configuration of the casbah Algiers (P1)Source: own study

Figure 9

Criterion value ranking in the landscape configuration of the colonial city within the protection walls of Algiers (P2)Source: own study
Criterion value ranking in the landscape configuration of the colonial city within the protection walls of Algiers (P2)Source: own study

Figure 10

Criterion value ranking in the landscape configuration of the colonial city historical centrality of Algiers (P3)Source: own study
Criterion value ranking in the landscape configuration of the colonial city historical centrality of Algiers (P3)Source: own study

Figure 11

Criterion value ranking in the landscape configuration of the colonial city evolution of heights of Algiers (P4)Source: own study
Criterion value ranking in the landscape configuration of the colonial city evolution of heights of Algiers (P4)Source: own study

Figure 12

Criteria contribution for the delimitation of HUL AlgiersSource: own study
Criteria contribution for the delimitation of HUL AlgiersSource: own study

Figure 13

Delimitation of HUL AlgiersSource: own study
Delimitation of HUL AlgiersSource: own study

Figure 14

Map alternatives for the delimitation of HUL AlgiersSource: own study
Map alternatives for the delimitation of HUL AlgiersSource: own study

Criteria and sub-criteria in the alternative delimitation of the historical urban landscape of Algiers

CriteriaSub-criteria
Site BeautySC1Maritime site
SC2Bay configuration
SC3Port site
SC4Morphology and topography of the hilltop's relief (promontory, plateaus, amphitheatre)
SC5Physical and natural views of the bay
Urban Beauty ConfigurationSC6Sharing the exceptionality of the beauty of the coastal boulevard
SC7Urban ensembles inclined against rugged land
SC8Gardens location
SC9Interdependence of the architectural dimension and the urban dimension
Relational System ConfigurationSC10Territorial structuration dating from the Roman period
SC11Interpenetration of the colonial city in the context of the medina
SC12Road extensions in relation to the medina, the sea, and the protective walls in the first phase
SC13Haussmann-style typology of urban axes in relation to the site and the sea in the second phase
SC14The structural spatial typology of links through public squares
Historical Centrality ConfigurationSC15Cultural heritage concentration in the casbah
SC16Concentration of urban spaces for centralizing activities
SC17Urban axes centralising city walks
SC18Persistence of commercial port activity and its development as an economic exchange centre
Heritage System ConfigurationSC19Universal heritage component of the traditional Algiers’ casbah
SC20Safeguarding the casbah sector over an area of 105 ha (with protection bands)
SC21Architectural typological diversity of landmark buildings belonging to the traditional city, and of public buildings of the colonial city
SC22Concentration of heritage buildings with exemplary architectural and urban qualities from the nineteenth century

Performance sub-criteria in alternative delimitation of historical urban landscape of Algiers

SC1SC2SC3SC4SC5SC6SC7SC8SC9SC10SC11SC12SC13SC14SC15SC16SC17SC18SC19SC20SC21SC22
0.2970.1030.0770.0590.0230.0670.0310.0210.0080.0410.0740.0210.0140.0080.0400.0220.0380.0080.0280.0120.0080.004
P1[Landscape casbah city]0.1780.0620.0460.0350.0140.0400.0190.0130.0050.0240.0440.0130.0080.0050.0240.0130.0230.0050.0170.0070.0050.0020.603
P2[Landscape colonial city within the protection walls)0.0740.0260.0190.0150.0060.0170.0080.0050.0020.0100.0180.0050.0030.0020.0100.0050.0090.0020.0070.0030.0020.0010.251
P3[Landscape colonial city historical centrality]0.0180.0060.0050.0040.0010.0040.0020.0010.0000.0020.0040.0010.0010.0000.0020.0010.0020.0000.0020.0010.0000.0000.060
P4[Landscape colonial city evolution of heights]0.0270.0090.0070.0050.0020.0060.0030.0020.0010.0040.0070.0020.0010.0010.0040.0020.0030.0010.0030.0010.0010.0000.090

Pairwise comparison matrix criteria; level 1

Site BeautyUrban Beauty configurationRelational System configurationHistorical CentralityHeritage System configurationPriority Vector
Site Beauty11/51/51/71/70.540
Urban Beauty configuration5131/31/30.128
Relational System configuration51/311/51/30.213
Historical Centrality configuration73511/20.067
Heritage System configuration733210.052
λmax=5.358 CI=0.089 CR=0.080
DOI: https://doi.org/10.2478/mgrsd-2020-0053 | Journal eISSN: 2084-6118 | Journal ISSN: 0867-6046
Language: English
Page range: 110 - 126
Submitted on: Feb 20, 2020
Accepted on: Oct 24, 2020
Published on: Apr 30, 2021
Published by: Faculty of Geography and Regional Studies, University of Warsaw
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Boukratem Oumelkheir, Djelal Nadia, published by Faculty of Geography and Regional Studies, University of Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.