Potential of metropolitan greenspaces on global warming abatement in Lagos, Southwestern Nigeria

ABSTRACT

ABSTRACT Greenspace campaign regulates urban air quality and global warming effects. Four areas with trees planting (TP Ojota-Ketu, Anthony, Costain and Airport-Agege) and non-trees planting (NP Mile 12, Jibowu, Ojuelegba and Iyana-ipaja) were selected considering traffic volumes. Gaseous pollutants CO, CO2, NOx, SO2, VOC; SPM and noise levels; meteorological conditions O2 and Temperature in the selected areas were assessed to be TP and NP were CO 3.76 ± 1.23 and 4.70 ± 1.59 µg/ m3, CO2 8.39 ± 1.50 and 14.68 ± 2.62 µg/ m3, NO2 1.94 ± 0.84 and 2.57 ± 1.11 µg/ m3, SO2 0.32 ± 0.54 and 0.46 ± 0.77 µg/ m3, VOC 2.08 ± 0.65 and 2.60 ± 1.66 µg/ m3, SPM 101.5 ± 26.19 and 189.34 ± 48.99 µg/ m3, Temp. 41.25 ± 6.92 and 45.38 ± 7.26 OC, O2 28.25 ± 2.74 and 21.73 ± 2.09 %, and Noise 93.75 ± 37.21 and 112.50 ± 44.65 dB. Gaseous pollution levels were below the standards at the TP. Levels of SPM were generally lower but Temperature was higher than the limit. Greenspace significance to improve urban air quality and abate global warming was observed