Victoria Forest Study Finds Thinning Beats Clearfelling for Carbon Storage and Wildlife

A long running experiment in Victoria's mountain ash forests is challenging the idea that conservation and timber production cannot coexist. The Silvicultural Systems Project, set up in the late 1980s with A$26 million in state funding, compared clearfelling with smaller patch cuts and heavy thinning at Tanjil Bren and Cabbage Tree Creek. Recent checks found that thinned stands not only regrew large trees, some over 1.5 meters in diameter, but stored as much or more carbon than untouched controls within 30 years. The findings also point to biodiversity gains. Larger thinned trees are more fire resilient and more likely to develop hollows that species like Leadbeater's possum and the greater glider need. Camera traps recorded Leadbeater's possums in every silvicultural plot, while unharvested areas had none. That does not make thinning a universal fix, but it suggests a diverse mix of management methods can balance timber supply, carbon storage, and habitat. The bigger lesson is that long term forestry research gets neglected. Many experimental sites are forgotten, and the policy debate stays stuck in a clearfell versus preservation loop. Locating and maintaining these trials would give Australia a much stronger evidence base for managing forests under climate stress.