فهرست نشریات علمی دسترسی آزاد ایران

BACKGROUND AND OBJECTIVES: Vegetation is essential for reducing shallow landslides by providing hydromechanical stability. However, effective slope stabilization requires understanding the spatial distribution of slip planes, a crucial aspect that remains underexplored in landslide mitigation studies. The study objectives were to develop a novel vegetation intervention model that integrates vegetation’s hydromechanical properties with slip plane distribution to enhance slope reinforcement and reduce landslide risk.METHODS: Geological field investigations, electrical resistivity tomography, light detection and ranging drone surveys, geomorphological analysis, three-dimensional terrain modelling, and isopach map development combine vegetation’s hydromechanical effects. A vegetation inventory was conducted through field observations and interviews to assess pre- and post-landslide conditions. The landslide risks map was created by combining slope and lithology thickness above the slip plane using reclassification and weighting analyses. Vegetation interventions were then designed based on this map and the hydromechanical properties of selected plant species.FINDINGS: The landslide area comprises brown breccia with moderate permeability and grey marl with slow permeability, exceeding 40 meters in thickness. The slip plane follows the breccia-marl contact, aligning with the slope dip, creating high landslide susceptibility. Slip plane depth varies with breccia thickness (0.5–4.5 meters). Pre-landslide vegetation, dominated by garden plants, bamboo, and selectively harvested woody species, had limited slope stabilization effects. The depletion and transition areas are divided into high, medium, and low landslide risk zones based on slopes and breccia thickness. Plants were selected based on root depth, evapotranspiration capacity, and canopy density properties.CONCLUSION: In high-risk zones (breccia 3–4.5 meters, slopes >30 degrees), deep-rooted trees of >4.5 meters, fast-growing tree species with high evapotranspiration, and dense canopies such as Paraserianthes falcataria, Eucalyptus sp., and Acacia mangium, are recommended, with wider spacing to prevent additional loading. Bambussa sp. is also suitable due to its fibrous roots and high water absorption. Medium-risk zones (breccia 1–3 meters, slopes 10–30 degrees) benefit from species with >3 meters’ root depths, including Leucaena leucocephala, Artocarpus heterophyllus, Gmelina arborea, Mangifera indica, Swietenia sp., Bambussa sp., and Chrysopogon zizanoides. Low-risk zones (breccia <1 meter, slopes <10 degrees) can support shallow-rooted, economically valuable crops such as Cocos nucifera, Musa paradisiaca, Zea mays, Vigna unguiculata, Manihot esculenta, Capsicum annuum and Solanum lycopersicum. Cover crops can be integrated across all zones for stability and erosion control. This vegetation-based intervention provides a strategic model for slope reinforcement and shallow landslide mitigation.