Urban park lighting as a source of botanical light pollution

Abstract

—That paper describes the relative impact of an artificial lighting device on botanical light pollution, considering spectral power distribution (SPD in the lighting area. This impact is described by the Relative-to-Moon Photosynthesis Index (RMPI) and Induced Phytochrome Index (IPr). We found that in the case when lighting is realized by using LED luminaires instead of high-pressure sodium (HPS) or metal halide (MH) lamps, the influence of spectral light on plant vegetation process amplifies. Additionally, our research shows that estimating botanical light pollution on the basis of lamps’ CCT is not the best method and that using SPD is better for this purpose.