چكيده لاتين
Land subsidence, the gradual sinking of the Earthʹs surface due to natural and anthropogenic processes, has emerged as a growing concern in the city of Isfahan. This research employed a comprehensive approach, integrating quantitative and qualitative methods, to assess the resilience of different areas within Isfahan to land subsidence. The ultimate objective of this study was to develop strategies to mitigate the adverse effects of subsidence and enhance the cityʹs resilience.
To delineate the resilience zones of Isfahan, this study utilized criteria such as subsidence rate, population density, building density, road density, distance from medical centers, and distance from waterways. These criteria were integrated within a Geographic Information System (GIS) environment. Expert consultation and stakeholder engagement were employed to determine weights reflecting the relative importance of each map layer representing different criteria. After pairwise comparisons of criteria and weight determination, the necessary data were prepared, and using fuzzy analytic hierarchy process (FAHP), the information layers were transformed into fuzzy membership and integrated. Finally, using the Fuzzy Overlay and Raster Calculator tools, a final resilience map was generated, categorizing areas based on their resilience levels.
Results indicated that the AND operator yielded the most stringent condition, with only areas meeting all criteria classified as highly resilient; consequently, most areas exhibited low resilience, and only certain areas within zones 5, 6, and 13 demonstrated relatively high resilience. The OR operator imposed the least restrictions, indicating larger areas as resilient, except for regions in zones 5, 10, 7, and 8 that exhibited low resilience. The SUM operator provided a more balanced result, indicating a larger number of areas with relatively good resilience. Zones 1, 8, 3, 10, 14, and parts of zones 11, 9, and 2 demonstrated low resilience. In the Gamma map, over 60% of zones 4, 5, 6, and 13 exhibited very low resilience, and in the Product map, except for elevated lands in zone 13, all areas exhibited very low resilience.
