1 / 25

Umi Raihana A. R. & Sharifah Norkhadijah S.I.

Validation of Suitable index map using a GIS Approach; an example from a Case Study in Selangor, Malaysia. Umi Raihana A. R. & Sharifah Norkhadijah S.I. Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia. OBJECTIVE.

dusty
Télécharger la présentation

Umi Raihana A. R. & Sharifah Norkhadijah S.I.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Validation of Suitable index map using a GIS Approach; an example from a Case Study in Selangor, Malaysia Umi Raihana A. R. & Sharifah Norkhadijah S.I. Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia

  2. OBJECTIVE • To validate the site suitability index map to improve the accuracies

  3. INTRODUCTION • Municipal solid waste (MSW) management has become one of the global concerns in developing countries such as Malaysia • Urbanisation and economic development lead to large waste produced • Landfilling is the main waste disposal method utilised in the country

  4. Selangor has a total of 20 landfills of which 13 are closed and 7 still operating • Most are Level 0 (open dumping) or Level 1 (non-sanitary) • Most of the landfills in Selangor are built and operated without proper monitoring facilities and pollution controls

  5. Landfills being built near to residential area • Sharifah Norkhadijah (2011) has suggested areas that suitable for landfill development – GIS and MCDA • How accurate of this map?

  6. Study area: Selangor • Selangor has a total area of 8,104 km2 with 5.4 million inhabitants in 2010. • This is approximately 20% of Malaysia’s total population Figure 1: The population of the urban areas in 2010 of Selangor (Source: Department of Statistic Malaysia, 2010).

  7. Method used to produce suitability index map Figure 2: The summary of overall procedure applied

  8. Figure 3: The mean suitability index and standard deviation

  9. Table 1: The land use of the candidate sites

  10. Map validation

  11. Map validation • Visual assessment of the map with the interpolated water quality data. • Determine the differences between maps • Whether it were consistent with the physical characteristic

  12. Figure 4: River water stations from DOE

  13. Figure 6: The interpolation of BOD in the whole Selangor with IDW Figure 5: The interpolation of COD with IDW

  14. Figure 8: The interpolation of TSS in the whole Selangor with IDW Figure 7: The interpolation of Coliform in the whole Selangor with IDW

  15. Figure 9: The interpolation of Cl with IDW Figure 10: The interpolation of E. coli with IDW

  16. Figure 11: PO4 and NH3NL level in Selangor

  17. MAP VALIDATION Overlay the maps + Figure 12: The overlay process of the map

  18. The output…. Figure 13: The comparison of water quality parameter to the suitability index map

  19. Figure 13: The comparison of water quality parameter to the suitability index map

  20. Figure 13: The comparison of water quality parameter to the suitability index map

  21. Figure 13: The comparison of water quality parameter to the suitability index map

  22. Figure 13: The comparison of water quality parameter to the suitability index map

  23. Table 3: The summary of candidate sites determined with high concentration of water quality parameters on the overlay map.

  24. CONCLUSIONS • Suitability index map in Sharifah Norkhadijah (2011) is not consistent with the water quality parameters analysed in this study. • Areas designated as high suitability was reported with high level of contaminants – locate landfill on these areas will worsen the environment • Except for C8, C10, C11 & C12.

  25. Thank you

More Related