Which ecosystem has the highest productivity?

Productivity:

1. Primary productivity is the amount of energy (measured in kcal per square meter per year) or biomass (measured in grams per square meter per year), accumulated in green plants per unit area per unit time.
2. It depends on the availability of solar radiations, optimum temperature, soil moisture and biogenetic nutrients.

Highest productivity:

1. In terrestrial ecosystems Tropical rain-forests show the highest productivity.
2. In aquatic ecosystems, coral reefs have the highest productivity.