PRCF forest habitat restoration activities are carried out at sites that have suffered degradation due to conversion into agriculture or because of fire and natural disasters. Forest restoration measures are primarily used at sites where the original natural habitat is desired in order to support endangered species populations, such as for the critically endangered Eastern Black-crested Gibbon in Vietnam. A variety of restoration techniques are used, depending of the condition of the forest land, state of standing vegetation, and cause of degradation. Techniques include natural regeneration, assisted natural regeneration, enrichment planting, and afforestation with native tree species.
Many of the areas we work in on forest rehabilitation retain the potential to regenerate their original forest conditions by just allowing natural regeneration to take place over time. This can be a lengthy process, but the approach is as simple and entails just protecting the areas from further anthropogenic disturbance and allowing natural regeneration to take place at its own pace.
Assisted natural regeneration
Natural regeneration can be enhanced by providing assistance to surfacing seedlings, saplings, and poles of desired species. This is often done by clearing grass and weeds nearby stems and by liberating poles of desired species from vines and other climbers.
In a number of cases, we engage in understory planting with native desired species to assist in the forest regeneration process. The activity entails securing and nursing seedlings and willings from desired native species, and thereafter planning at the target forest regeneration site.
When the forestland has been subject to intense pressure where natural or assisted natural regeneration is likely to yield poor results in mimicking the original forest structure and conditions, we engage in afforestation with desired native species. Afforestation techniques usually entail planting of native species in patterns that most mimic the natural forest.