1. By Belinda Ulfa Aulia, MSc
PENDEKATAN SPASIAL GUNA
LAHAN DALAM PERENCANAAN
WILAYAH

2. Analisis Kesesuaian Lahan
 Land suitability analysis is the process of determining the
fitness of a given tract of land for a defined use [56, 57].
 In the other words, suitability analysis is the process to
determine whether the land resource is suitable for some
specific uses and to determine its suitability level.
 Its development and capability to overlay digital maps
have made suitability mapping easier and quicker.
 Since suitability analysis deals with the analysis of
several data sets, GIS can effectively be used in looking
at the characteristics of land from a number of layers for
each location to solve problems.

3. Metode Analisis Kesesuaian
Lahan
1. Perumusan Permasalahan
2. Penetapan Kriteria
3. Pengklasifikasian Kriteria
4. Pemberian Bobot Kriteria
5. Proses Overlay Peta

4. Water & Soil Pollution Already-Existing PFS Distributions in
Surabaya
Fire & Explosion
Traffic Congestion
The growth of motor cycle is up to 12% per year. The
total number of car and motor cycle is up to 1.6
million (S.Surabaya, 2009).
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5. Problem Statement
The improper placement of PFS in Surabaya City could lead to
disastrous consequences, since environmental safety not used as
considered factors.
Research Objective
to assist the proper siting of PFSs by developing
an approach of GIS-based suitability analysis to
identify suitable sites for PFSs
More specific research objectives of this study are:
1. To investigate the contributing factors for
suitability analysis of PFS based on hazards
and site requirements of PFS.
2. To assess the suitability of PFS sites using
spatial multicriteria decision analysis (GIS
and AHP combination).
3. To validate the criteria ranking of suitable
PFS areas using spatial sensitivity analysis.
4. To assess the factual condition of PFS
distribution based on suitability analysis
result.
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6. Key Points
• Distance to groundwater
• Distance to salt water
Water System Protection • Distance to rivers
• Distance to private wells
• Distance to residential
Vicinity Area Protection • Distance to hospital and school
• Distance to electro static environment
• Distance to intersection
Road Safety • Distance to road
• Distance to grade crossing
• Distance from fire station
Emergency Response Services • Distance from hospital
• Land availability
Proper Land Selection • Acceptable slope for construction
• Land use
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7. Objective Criteria Indicator
Water system Groundwater At least 300 ft from groundwater
protection from Seawater At least 3.250 ft from saline water
USTs leakages Rivers At least 500 ft from rivers and lakes
Private wells At least 250 ft from artesis well
Vicinity area Impact on the residential At least 100 ft from residential
protection from properties properties
PFS's fire and Impact on nearby hospitals A least 500 ft from hospitals and
explosion hazards and schools schools
Presence of electro static At least 150 ft from High Voltage
environment Areas
Proper land Land availability vacant land
selection Proper HSE practises Less than 35% steep
during UST construction
Land use Located in commercial/industrial
zone
Road safety due to Distance to Intersection At least 250 ft from intersection
in-out activity Distance to road At least 40 ft. from road property
boundaries
Distance to grade crossing At least 820 ft from grade crossing
Emergency Distance from Fire Station Within 8 min. driving time
response services Distance from Hospital Within 8 min. driving time
Source: NEPA 1999, NFPA, BADA 2003, Maine 2002, New Hampshire 2007,
PERTAMINA, Wu et al. 1993
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8. Classification of Criteria
Criteria Low Suitability Medium Suitability High Suitability
1 2 3
Distance to Coastal Line < 3.250 ft - > 3.250 ft
Distance to River < 500 ft - > 500 ft
Distance to Residential < 500 ft - > 500 ft
Properties
Distance to Hospital and School < 100 ft - > 100 ft
Distance to High Voltage Area < 150 ft - > 150 ft
Distance to Intersection < 250 ft - > 250 ft
Distance to Road Property < 40 ft - > 40 ft
Boundaries
Distance to Grade Crossing < 820 ft - > 820 ft
Slope 1-40% 1-15% 1- 10%
Land Use Fish pond Residential Industrial
Green open space School Commercial
Land availability Non vacant land - Vacant land
Distance to Fire Station Within 4 min. driving Within 6 min. driving Within 8 min. driving
time time time
Distance to Hospital Within 4 min. driving Within 6 min. driving Within 8 min. driving
time time time
Viva Voce Presentation – MSc Program 8

9. Raster Data Set Euclidean Distance Reclassification
Coastal line and river data map layers
Grade crossing, road, and intersections data map
layers
Residential, hospitals, and High voltage area
data map layers
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10. Raster Data Set Euclidean Distance Reclassification
Slope data map
layers
Vacant area map
layers
Land use map
layers
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11. Raster Data Set Euclidean Distance Reclassification
Fire Department map layers
Hospital map
layers
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14. Multi-Criteria Decision Analysis Method
Pair wise Comparison
AHP Hierarchy
The pairwise comparison method employs an
underlying scale with values from 1 to 9 to rate the
relative preferences for two criteria.
Consistency Ratio (CR)
If CR ≤ 0.10, the ratio indicates a reasonable level of
consistency in the pair-wise comparisons.
Priority Rating
The final step is to aggregate the
relative weights of the levels
R i = Σk wk rik obtained in the second step to
produce composite weights.
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15. Analytic Hierarchy Process Result
The pairwise comparison method employs an
5. underlying scale with values from 1 to 9 to rate the
relative preferences for two criteria.
1.
3. Consistency Ratio (CR)
If CR ≤ 0.10, the ratio indicates a reasonable level of
4. consistency in the pair-wise comparisons.
2. This level of importance for each criteria will be
assigned to each data map layers in spatial analysis so
that one single map ranking based on decision support
system can be created.
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Priorities Preferences of PFS Placement Criteria based on Overall Stakeholder Perspective.

16. Spatial Multicriteria Decision Analysis
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18. Evaluation for Factual Condition
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19. Pictures of Factual Condition
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21. SEKIAN
DAN
TERIMA KASIH