Researchers have found that intensive agriculture in temperate regions appears to depress soil enzyme activities,
while cultivated soils in tropical regions that receive substantial organic input have maintained similar or higher
enzymatic levels compared to uncultivated soils (Dick et al.,1994b). In the Tahitian plantations studied here, plant
biomass is incorporated into the soil every three to four years, and most enzyme activities did not decline in these
soils over fourteen years of cultivation