Figure 53.10 Deforestation Can Affect Climate Evapotranspiration by trees reduces air temperatures and increases precipitation. When land is deforested and the trees are gone, the cooling effects of the albedo (reflection of solar radiation) and of convective heat loss are not enough to outweigh the warming effects of reduced evapotranspiration. The widths of the arrows are roughly proportional to the sizes of the fluxes.