Runoff response and sediment yield of a landslide-affected fire-climax grassland micro-catchment (Leyte, the Philippines) before and after passage of typhoon Haiyan

Zhang, Jun; van Meerveld, H J; Tripoli, Roger; Bruijnzeel, L Adrian

doi:10.1016/j.jhydrol.2018.08.016

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Zhang, J., van Meerveld, H. J., Tripoli, R., & Bruijnzeel, L. A. (2018). Runoff response and sediment yield of a landslide-affected fire-climax grassland micro-catchment (Leyte, the Philippines) before and after passage of typhoon Haiyan. Journal of Hydrology, 565, 524–537. https://doi.org/10.1016/j.jhydrol.2018.08.016

Abstract

Decades of logging and slash-and-burn agriculture have turned vast tracts of land in tropical South-east Asia into unproductive fire-climax grasslands whose hydrological functioning is poorly known. To help fill this knowledge gap, a 3.2 ha landslide-affected Imperata grassland micro-catchment with perennial flow on Leyte Island (Philippines) was instrumented and monitored for a year. The area was hit by typhoon Haiyan on 8 November 2013, one of the largest events on record. Landslide surfaces covered 3.4% of the catchment prior to ty