Bark Harvesting Systems of Drimys brasiliensis Miers in the Brazilian Atlantic Rainforest

Drimys brasiliensis Miers, locally known as cataia or casca-de-anta, is a native tree species of the Atlantic Rainforest. Its bark is harvested from natural populations. This study examined the recovery capacity of the bark of D. brasiliensis under different bark harvesting methods, as well as the influence of these approaches on its population dynamics and reproductive biology. While none of these treatments resulted in changes in phenological behavior or the rate of increase of diameter at breast height and tree height, the removal of wider bark strips resulted in lower rates of bark recovery and higher rates of insect attack and diseases. Accordingly, the results recommend using strips of bark 2 cm wide and 2 m long, with 4 cm between strips, for effective rates of bark regrowth and for lower susceptibility to insect attack and diseases. From these studies, we concluded that D. brasiliensis has a high potential for sustainable management of its natural populations, demonstrating the possibility of generating an important supplementary income for farmers and contributing to the use and conservation of the Atlantic Rainforest.

巴西皮楠（Drimys brasiliensis Miers）当地俗称cataia或casca-de-anta，是大西洋雨林的本土乔木物种。其树皮多从自然种群中采收。本研究考察了巴西皮楠树皮在不同采皮方式下的恢复能力，以及这些采皮方式对其种群动态与生殖生物学的影响。尽管所有采皮处理均未改变其物候行为，亦未对胸径与树高的增长速率产生影响，但采收较宽的树皮条带会降低树皮恢复率，且提升病虫害侵染率。据此，研究建议采用宽2厘米、长2米且条带间距4厘米的树皮采收方案，以实现高效的树皮再生，并降低其受病虫害侵染的可能性。基于上述研究，我们得出结论：巴西皮楠的自然种群具备较高的可持续经营潜力，可为农户创造可观的额外收入，同时助力大西洋雨林的利用与保护。