Journal of Forest Science, 2026 (vol. 72), issue 4
Hydrological risks of clear-cuts after the bark beetle outbreaks and related forest management decisions in Central EuropeReview
Vít İrámek, Kateĝina Neudertová Hellebrandová, Vìra Fadrhonsová
J. For. Sci., 2026, 72(4):161-173 | DOI: 10.17221/19/2026-JFS 
The review synthesises current knowledge on the hydrological and hydrochemical risks associated with large-scale clear-cutting following unprecedented bark beetle outbreaks in Central Europe. By analysing 107 sources published primarily between 2000 and 2026, we evaluate the divergent impacts of natural forest dieback versus intensive salvage logging. The rapid loss of Norway spruce [Picea abies (L.) Karst.] canopy has fundamentally altered the microclimate, shifting the energy balance from latent to sensible heat flux, which results in ground temperature increases of up to 5.2 °C. Hydrological consequences include a 16–48%...
Tree-ring based climate reconstruction and growth–climate analysis of Pinus kesiya Royle ex Gordon in Doi Khuntan National Park, northern ThailandOriginal Paper
Kritsadapan Palakit, Khwanchai Duangsathaporn, Nathsuda Pumijumnong, Supasit Sriarkarin, Thanyaporn Bungbai, Pichit Lumyai
J. For. Sci., 2026, 72(4):174-187 | DOI: 10.17221/78/2025-JFS
Tree-ring analysis is a valuable tool for understanding long-term climate patterns and their influence on tree growth. This study investigates the climate–growth relationships of Khasi pine (Pinus kesiya Royle ex Gordon) in Doi Khuntan National Park, northern Thailand (at elevations of 850 to 1 035 m a.s.l.), to reconstruct past climate and inform forest management. Using 48 cross-dated increment cores, we developed an 83-year chronology (1936–2018). Standard dendrochronological methods and regression models were applied. The radial growth of P. kesiya was primarily influenced by moisture availability, showing...
Hydrology and carbon pool characteristics regulate dissolved carbon export in a subtropical forest headwater streamOriginal Paper
Zemin Zhao, Fuzhong Wu, Yan Peng, Qiqian Wu, Qiao Yang, Chaoxiang Yuan, Xiangyin Ni, Kai Yue
J. For. Sci., 2026, 72(4):188-201 | DOI: 10.17221/68/2025-JFS
Headwater streams are key pathways for carbon (C) transfer from terrestrial to aquatic ecosystems. Sediments and plant litter constitute major C pools in streams, yet their roles in regulating dissolved carbon (DC) exports remain poorly understood. Here, we investigated dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) concentrations and export through monthly sampling over one year in a subtropical forest headwater stream. DOC export peaked during the wet season (98.9 ± 171.8 kg·h–1), whereas DIC export showed no significant seasonal variation. During the wet season, C pool characteristics were...
Soil temperature and weather factors as key drivers of flowering phenology and nectar production in black locust (Robinia pseudoacacia L.) in HungaryOriginal Paper
Alexandra Porcsin, Tamás Ábri, Helga Déri, Edit Zajácz, Bence Bolla, Katalin Szakálosné Mátyás, Károly Rédei, Zsolt Keserû
J. For. Sci., 2026, 72(4):202-211 | DOI: 10.17221/6/2026-JFS
The black locust (Robinia pseudoacacia L.) is the second most planted tree species worldwide, and the most common in Hungary. Phenotypic traits, particularly flowering patterns, are well-established indicators of the species' response to climate change. This study examined four forest subcompartments across three Hungarian regions: Northern-Central, Eastern and Southern-Central. The aim was to identify climatic factors correlating with the onset and duration of the flowering period. Additionally, the relationships between these factors and nectar weight and sugar concentration were defined. Results indicate a strong negative correlation...