QGIS-Based Mapping and Quantification of Riparian Bamboo as a Nature-Based Strategy for Erosion Control and Flood Resilience in Doña Remedios Trinidad, Bulacan

Author

Ma. Samantha Beatris Pascual, Jazmine Gallano, Lhianne Kylle San Juan, Fidel Hernandez, Jayson Eugelio


Abstract

  Riparian bamboo usually grows along rivers and is recognized for its effectiveness in controlling and managing erosion because of its strong root systems, which enhance flood control. In this study, the riparian bamboo identified and mapped was kawayan tinik (Bambusa blumeana). However, there is still limited information on its occurrence pattern in Doña Remedios Trinidad (DRT), Bulacan. This study sought to map and quantify riparian bamboo using satellite imagery and Quantum Geographic Information System (QGIS) and to propose a bamboo-based mitigation plan for selected river systems in the municipality. A field survey was conducted across seven selected barangays to locate bamboo clumps, with their positions recorded using Global Positioning System (GPS) technology. The gathered coordinates were then integrated with satellite imagery and analyzed in QGIS to produce distribution maps and assess the relative abundance and elevation of the identified bamboo clumps. The survey documented a total of 52 bamboo clumps. Kalawakan had the highest relative abundance (32.69%), followed by Sapang Bulak and Kabayunan (19.23% each), while Talbak recorded the lowest (1.92%). Bamboo was found in every surveyed barangay, though its distribution differed across various river systems. Based on these findings, a bamboo-based mitigation plan was prepared, with recommendations such as rehabilitating and expanding plantings in areas with limited bamboo coverage and enhancing protection and regular monitoring in areas with more substantial bamboo coverage. The generated maps and inventory provide baseline information that may support riverbank management, watershed protection, and environmental planning efforts in Doña Remedios Trinidad, Bulacan.



Keywords

Bambusa blumeana; riparian vegetation; QGIS; relative abundance; elevation gradient; riverbank rehabilitation



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References


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