This is a consultancy activity offered by UNDP. The selection of silviculture practices to recover degraded natural forest ecosystems is becoming increasingly important in biosphere reserves. Restoring degraded ecosystems will help to enhance the environmental service values ​​of the forests. The best solution for Dong Nai Biosphere Reserve is to promote natural regeneration a. In Tay Nghe An Biosphere Reserve, regeneration and multi-purpose plantation would be aimed at many different environmental and socio-economic objectives.