Journal of Forest Science, 2022 (vol. 68), issue 8
Comparisons of carbon and nitrogen dynamics of litterfall components in adjacent Pinus densiflora and Quercus variabilis standsOriginal Paper
Byeonggil Choi, Gyeongwon Baek, Hyungsub Kim, Yowhan Son, Choonsig Kim
J. For. Sci., 2022, 68(8):287-297 | DOI: 10.17221/75/2022-JFS 
This study aimed to determine the effects of the stand and month on the carbon (C) and nitrogen (N) concentrations and the inputs of the litterfall components in adjacent Pinus densiflora and Quercus variabilis stands. The monthly C concentrations of the litterfall components were significantly higher in the P. densiflora stand than in the Q. variabilis stand, whereas the monthly N concentrations of the leaf and miscellaneous litter were higher in the Q. variabilis stand than in the P. densiflora stand. The coefficient variations of the N concentrations were higher than those of...
Silvicultural options to promote natural regeneration of Scots pine (Pinus sylvestris L.) in Western Ukrainian forestsOriginal Paper
Vasyl Lavnyy, Peter Spathelf, Rostyslav Kravchuk, Ruslan Vytseha, Volodymyr Yakhnytskyy
J. For. Sci., 2022, 68(8):298-310 | DOI: 10.17221/73/2022-JFS
Scots pine (Pinus sylvestris L.) forests belong to the most relevant forest types in the Western Ukrainian Roztochia area. The promotion of close-to-nature forest management in Ukraine in the framework of the forest strategy 2 035 supports natural regeneration and the application of diverse felling methods beyond clearcutting. In the present study, natural regeneration was analysed in mixed Scots pine stands on poor and relatively rich soils, after small clearcuts, shelterwood cutting and gap fellings (with or without soil preparation), with respect to tree species composition, species abundance and height growth. It could be shown that Scots...
Effect of LED lights on the in vitro growth of Pinus pseudostrobus Lindl., plantsOriginal Paper
Luis Alberto Marín-Martínez, Lourdes Georgina Iglesias-Andreu
J. For. Sci., 2022, 68(8):311-317 | DOI: 10.17221/43/2022-JFS
Pinus pseudostrobus Lindl. is a species endemic to Mexico and is widely used in reforestation programmes, as it is highly adapted to poor, shallow, limestone soils and has high commercial importance. However, it is necessary to preserve this genetic material since it is in trouble due to high rates of deforestation, land use change, and forest fires, so it is necessary to have effective strategies to obtain good quality seedlings. Due to the properties of LED (light emitting diode) lamps used for illumination in the production of in vitro plants, the effects of two different lighting systems (LED and fluorescent) on an in vitro...
Managed vs. unmanaged Fagus orientalis Lipsky forests: Structure and diversity of natural regeneration in northern IranOriginal Paper
Pejman Parhizkar*, Mohammad Hossein Sadeghzadeh Hallaj, Majid Hassani
J. For. Sci., 2022, 68(8):318-328 | DOI: 10.17221/63/2022-JFS
The predominant natural disturbance regime within an old-growth Oriental beech (Fagus orientalis Lipsky) forest has been imitated in order to continue the forest cover. It is unclear how much the silvicultural characteristics of regeneration in a managed forest differ from those in an unmanaged old-growth forest subject only to natural dynamics. In this study, we compared important quantitative (e.g. height, collar diameter, crown width, length of spring shoot on the main stem and length of the uppermost internodes) and qualitative (e.g. healthy, mode of branching and stem form) silvicultural characteristics of beech saplings within the gaps...