澳大利亚维多利亚州一项尘封数十年的林业研究在重新被发现后,为森林管理和碳储存带来了令人意外的发现。这项名为"林业系统项目"的研究始于1987-1989年间,投资相当于今日的2600万澳元,试验地点分别位于维多利亚中部高地的坦吉尔布伦和东吉普斯兰的卷心菜树溪1。研究人员在2014年重新访问了这些被遗忘的试验场地,对30年来的变化进行了评估1。
结果表明,经过大规模间伐的山灰树森林展现出了出人意料的生长潜力。间伐地区的树木直径平均超过1米,最大超过1.5米,比未开采对照区最大增长20%1。更为重要的是,这些间伐区域在30年内恢复了与未开采区域相当或更多的碳储量1。这一发现表明,精心管理的间伐可以同时支持木材生产、碳储存和生态保护的多重目标1。在野生动物保护方面,Lead beater's possum在所有间伐处理地块中都有发现,但在未开采区域中完全没有踪迹1。
Researchers rediscovered a landmark forestry study in Victoria, Australia that challenges conventional assumptions about logging and forest regeneration. The Silvicultural Systems Project, established between 1987 and 1989 with an investment equivalent to AUD 26 million in today's value, was revisited by scientists in 2014 after years of neglect 1. The experiment compared outcomes across two sites—Tanjil Bren in the central highlands and Cabbage Tree Creek in East Gippsland—where managed harvesting was applied to mountain ash forests 1.
The results demonstrate remarkable recovery in the logged areas. Trees in the thinned sections grew to exceptional sizes, with average diameters exceeding one meter and maximum diameters surpassing 1.5 meters, reaching up to 20 percent larger than trees in unharvested control plots 1. Most striking, the carbon stored in the thinned forests after 30 years matched or exceeded that of the unlogged regions, suggesting that carefully managed thinning can simultaneously support timber production and carbon sequestration 1. Additionally, Leadbeater's possum, a native marsupial, was found across all thinned treatment areas but was notably absent from the unharvested zones, indicating that strategic forestry practices may also benefit wildlife habitat 1.
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