Abstract:Restoring forest quality and ecosystem functions is one of the core goals of sustainable forest management. Elucidating the response mechanism of tree and stand growth to harvesting disturbance can provide important guidance. Previous studies preferred to compare the dissimilarity of tree or stand growth under different harvesting treatments, but ignored the differential response of trees to disturbance intensity under different recovery times. This study was conducted in the Korean pine-broadleaved forests in Jiaohe, Jilin province. Based on the observational data collected in 2011, 2013, 2015, and 2018, we compared the effects of different harvesting intensities and recovery times on tree growth and stand productivity. We evaluated the harvesting threshold of forest productivity using linear and segmental models. The results showed that forest harvesting had significant effects on trees growth and stand productivity. Harvesting promoted tree growth, but reduced stand productivity. Specifically, within two years after harvesting, there was no significant difference in tree and stand growth, while three years after harvesting, tree growth increased significantly, indicating a time lag effect of forest harvesting. In addition, the results based on the segmental models showed that stand productivity was the highest when the remaining basal area was 21.6 m2/hm2. Therefore, from the perspective of sustainable management, 21.6 m2/hm2 was the most favorable stand density for forest restoration. The results provide technical guidance for the management and restoration of Korean pine-broadleaved forests.