Resource pulses are rare, brief and intense episodes of increased resource availability in space and time. Greenfalls caused by typhoons is a resource pulse event for ground-dwelling arthropods. In this study, I artificially created a resource pulse of greenfalls in a Pinus taiwanensis plantation to simulate one that is caused by typhoons, and I monitored the abundance and biomass of arthropods for 8 months (2 months of pre-treatment time period and 6 months of post-treatment time period). The results suggest that the greenfalls can have negative effects on arthropod biomass as a whole, as well as on the biomass of specific taxa, such as spiders and isopods. At functional-group level, I detected positive, bottom-up effects from the greenfalls to intermediate consumers (most likely herbivores) and top predators (most likely rove beetles). The omnivores (i.e. ground beetles and ants) were not influenced by the greenfalls. This study demonstrated that the greenfalls that a typhoon could bring may have different or even opposite effects on different functional and taxonomic groups within arthropod communities.