"This will have a major negative influence on the future ability of the forestry industry in the region to produce the timber needed to supply the processing plants that rely on this resource," said the statement.
"Many jobs in the timber-growing sector will be permanently lost. Forestry infrastructure was also destroyed."
A sawmill in the Geelhoutvlei valued at more than R100m was burnt down in the fires – which claimed 10 lives - leaving 400 people unemployed.
"After the devastating fires of July 2017, the latest fires pose a severe risk to the sustainability of both the forestry and processing industries in the southern Cape. Both Forestry SA and Sawmilling SA are working hard to ensure that the future of these industries will be secured," said the statement.