|Sustainable Management of Soil Resources in the Humid Tropics (UNU, 1995, 146 pages)|
|IX. Ecological approach to sustainable land use in the humid tropics|
It is important that the nutrient reserves of the ecosystem are not depleted but are enhanced and recycled. The recycling mechanisms (e.g., a combination of deep-rooted and shallow-rooted species, returning biomass to the soil surface, high soil biodiversity) must be strengthened. The loss of nutrients by erosion, leaching, and volatilization must be minimized.