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Are Czechs interested in employment in forestry?Original PaperEva Abramuszkinová Pavlíková, Jana Stachová, Kristina Somerlíková, Eli¹ka Svobodová, Zdenìk ©ilhan, Kateøina Holu¹ováJ. For. Sci., 2026, 72(3):136-147 | DOI: 10.17221/10/2026-JFS
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A review of research on hybrid unmanned vehicles in complex forest and grassland terrainsReviewPeng Wang, Kangkang Pan, Jun Yuan, Sipu Pan, Yujin YangJ. For. Sci., 2025, 71(11):525-541 | DOI: 10.17221/65/2025-JFS The sustainable management of European forest ecosystems necessitates innovative mechanisation solutions to address operational challenges in hilly, mountainous, and ecologically sensitive terrains. Hybrid-drive unmanned vehicles (HDUVs) present a transformative potential by integrating fuel-electric powertrains with autonomous navigation systems, enabling energy-efficient operations with minimal environmental impact. This review synthesises and critically analyses advancements in three critical domains: (i) dynamic modelling and chassis design for enhanced terrain adaptability, (ii) hybrid powertrain optimisation for reduced emissions and extended operational range, and (iii) the integration of unmanned systems for precision forestry tasks. By examining multi-body dynamics, power management strategies, and AI-driven navigation algorithms, we elucidate the role of HDUVs in improving operational efficiency while mitigating soil disturbance and carbon footprint. The review identifies prevailing research gaps and suggests that future work should prioritise the development of standardised testing protocols and foster cross-disciplinary collaboration to align HDUV development with EU biodiversity and climate objectives. |
Soil temperature and weather factors as key drivers of flowering phenology and nectar production in black locust (Robinia pseudoacacia L.) in HungaryOriginal PaperAlexandra Porcsin, Tamás Ábri, Helga Déri, Edit Zajácz, Bence Bolla, Katalin Szakálosné Mátyás, Károly Rédei, Zsolt KeserûJ. For. Sci., 2026, 72(4):202-211 | DOI: 10.17221/6/2026-JFS
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Boulders as functional microrefugia: Quantifying a continental-like microclimate supporting Pinus cembra at its oceanic range marginOriginal PaperYann Fragnière, Stéphanie Morelon, Alain Müller, Gregor KozlowskiJ. For. Sci., 2026, 72(2):82-92 | DOI: 10.17221/8/2026-JFS
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Development of sessile oak [Quercus petraea (Matt.) Liebl.] seed coating material against rodents and evaluation of its performance on seed germination and emergenceOriginal PaperMesut Tandoğan, Mehmet Özdemir, Vedat Aslan, Ahmet F. Hacıyusufoğlu, Ali Ayhan Kul, Emine ªen, Kaan Polatoğlu, Duygu Sultan OranJ. For. Sci., 2025, 71(9):417-425 | DOI: 10.17221/42/2025-JFS Protecting sessile oak [Quercus petraea (Matt.) Liebl.] seeds from rodents is crucial to ensure successful germination and emergence in activities such as artificial regeneration, afforestation, and seedling production. This study examined the effects of 12 natural or nature-identical substances, believed to have repellent properties, on the germination, emergence, and survival of sessile oak acorns under both laboratory and field conditions. Acorns were coated using a diatomaceous clay-based pellet system, and a Y-maze experiment was conducted to evaluate rodent behaviour. As a result of the research, among the tested substances, Ferulago confusa and Foeniculum vulgare were recommended as rodent repellents due to their success in laboratory and field trials. Diesel fuel + hair, a conventional repellent, showed poor performance and is not recommended. This study underscores the potential efficacy of natural or nature-identical coatings for protecting seeds from pests in forestry applications. |
Soil macroarthropod dynamics in response to environmental disturbances in a forest remnant ecosystem: A case study at Cibodas Botanical GardenOriginal PaperAnita Rianti, Fenky Marsandi, Taufikurrahman Nasution, Musyarofah Zuhri, Muhammad Efendi, Hari Prayogi, Setyawan Agung Danarto, Hidayatul Fajri, Vivin Silvaliandra Sihombing (ORCJ. For. Sci., 2026, 72(1):1-13 | DOI: 10.17221/38/2025-JFS
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Height growth of Quercus petraea coppices: Effects of tree type, stand management, and site conditions – A case study from the Czech lowlandsOriginal PaperJan Kadavý, Michal Kneifl, Barbora UherkováJ. For. Sci., 2026, 72(2):93-105 | DOI: 10.17221/7/2026-JFS
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Biomechanical optimisation strategy for selecting native shrubs and herbaceous plants with superior soil and water conservation properties in combating land degradation in central-western Inner MongoliaOriginal PaperRile Ge, Wei Zhao, Hui Zhi, Yahui Lu, Shuaixin WeiJ. For. Sci., 2026, 72(1):42-55 | DOI: 10.17221/95/2025-JFS
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Effect of livestock and vegetation structure on Carabidae (Coleoptera) diversity in dehesas of the Iberian PeninsulaOriginal PaperAna M. Cárdenas, Carmen Torres, Juan M. HidalgoJ. For. Sci., 2026, 72(1):14-27 | DOI: 10.17221/54/2025-JFS The response of carabid beetles to extensive livestock farming and vegetation structure in two traditionally managed 'dehesa' ecosystems was investigated. From March 2011 to January 2012, sampling was done, using pitfall trapping, on two forestry farms located in the Sierra de Hornachuelos Natural Park (Córdoba, Spain), both with hunting use, but one of them also with a heavy livestock load. On each forestry farm, two sampling plots were selected according to the vegetation structure. Faunal differences were proved through the ecological indices, and the faunal uniqueness was checked by the Coldwell and Coddington Complementarity Analysis. To identify the most influential factor on the carabid biodiversity, a Generalised Linear Mixed Model (GLMM) was performed. Results show that abundance and richness are higher in the plots with open vegetation, similarly like the number of recorded tribes. Nevertheless, the ecological indices do not reflect any significant differences. The complementarity between different vegetation structures exceeds that of the exploitation types. In fact, the GLMM analysis indicated that the livestock itself does not have a significant effect on the fauna. In addition, all exclusive, rare or endemic species came from the closed vegetation plots, suggesting that these areas may act as a reservoir of unique species in terms of biodiversity. |
Hormetic growth of Pinus pseudostrobus seedlings exposed to low-dose gamma and X-ray irradiationOriginal PaperLaura Yasmin Flores López, César Valenzuela Encinas, Eulogio De la Cruz Torres, María de Lourdes Palafox Chávez, Ivar Diego Aceves Sánchez, Lourdes Georgina Iglesias AndreuJ. For. Sci., 2026, 72(3):107-118 | DOI: 10.17221/83/2025-JFS Mexico ranks among the countries with the highest deforestation rates, increasing the demand for high-quality forest seedlings of valuable species such as Pinus pseudostrobus Lindl., which face germination limitations due to seed dormancy and low viability. Ionising radiation has emerged as an alternative pregermination treatment capable of inducing adaptive responses in plants through hormesis. This study evaluated the effects of different doses of gamma radiation (60Co) and high-energy X-rays (linear accelerator, 6 MeV) on the germination, growth, and quality of P. pseudostrobus seedlings. A total of 1 440 seeds were irradiated per radiation source with 12 doses (0–25 Gy) and sown under nursery conditions in a completely randomised design. Germination parameters, morphological traits, photosynthetic pigment content, and quality indices were analysed. With both radiation sources, low doses (0.5–1.5 Gy) significantly enhanced germination, chlorophyll content, and seedling height and diameter, while doses above 15 Gy inhibited these responses. The LD50 (median lethal dose) was estimated at 20 Gy for gamma rays and 12 Gy for X-rays, whereas GR50 (median growth reduction dose) exceeded 45 Gy in both treatments. These findings demonstrate that low radiation doses elicit a beneficial hormetic effect in P. pseudostrobus, representing a viable biotechnological approach to improve seedling production and ecological reforestation efficiency. |
Tree-ring based climate reconstruction and growth–climate analysis of Pinus kesiya Royle ex Gordon in Doi Khuntan National Park, northern ThailandOriginal PaperKritsadapan Palakit, Khwanchai Duangsathaporn, Nathsuda Pumijumnong, Supasit Sriarkarin, Thanyaporn Bungbai, Pichit LumyaiJ. For. Sci., 2026, 72(4):174-187 | DOI: 10.17221/78/2025-JFS
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Unearthing the hidden domain of epicormic shoots: Insights into forest management impacts on Quercus petraea (Matt.) Liebl.Original PaperIgor ©tefanèík, Stanislav Vacek, Zdenìk Vacek, Michal Kubìnka, Václav ©imùnek, Josef GalloJ. For. Sci., 2026, 72(1):28-41 | DOI: 10.17221/2/2026-JFS Forest management of durmast oak stands [Quercus petraea (Matt.) Liebl.] is focused on the production of high-quality assortments for the furniture industry. Due to various forest management factors and impacts of climate change, their vitality and quality are often reduced. Sudden illumination of the oak trunk caused by management cuts can lead to epicormic shoot formation. This study compared two localities and nine long-term research plots at the stand age of 62–68 years in Slovakia. While one locality was affected by the massive dieback of oak in the past, the other was not. The epicormic shoot occurrence was monitored separately in the lower and upper parts of the trunk, depending on selected quantitative tree parameters and on the various management methods. The formation of epicormic shoot was influenced especially by DBH, crown width and crown volume. The occurrence of shoots was always markedly higher in the upper part of the trunk compared to the lower one. During a 35-year period, the development of the proportion of epicormic shoots in the lower part of the trunk in the locality with massive dieback of oak confirmed a higher occurrence on control plots compared to the managed plots with thinning interventions. It showed that the occurrence of epicormic shoots in durmast oak stands was influenced not only by different methods of management but also by the dieback effect in the past. Promoting more intensive thinning in early-stage oak stands is advised, as it prompts trees to develop larger crowns with limiting formation of epicormic shoots. |
Coppice forests: Between management, conversion and restorationReviewValeriu-Norocel Nicolescu, Gavriil Spyroglou, Sanja Periæ, Martina Ðodan, Cornelia Buzatu-Goanțã, Milun Krstic, Joao Carvalho, Iryna Matsiakh, Halil Bariº Özel (ORCID:J. For. Sci., 2026, 72(2):57-72 | DOI: 10.17221/5/2026-JFS
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Hydraulic sizing of forest road pipe culvertsOriginal PaperKarel Zlatu¹ka, Petr Kupec, Martin Duchan, Alena Tichá, Jan DeutscherJ. For. Sci., 2025, 71(3):113-123 | DOI: 10.17221/95/2024-JFS This article presents guidelines for assessing the optimal dimensions of forest road pipe culverts, based on input of actual and experimental data to standard engineering techniques. In doing so, we assess the need for (i) changes in the parametrisation of inputs (i.e. culvert micro-catchment dimensions, rainfall and resultant culvert flow, and culvert flow rates during culvert hydraulic dimensioning), and (ii) the need to redesign culvert outlets in relation to flow speed. Our results demonstrate that values for most inputs presently used under current technical practice for forest road pipe culvert sizing are significantly higher than those achieved under experimental conditions. The data on outlet flow velocities strongly suggests that strengthening of culvert outlet aprons will be crucial for their future operation. |
Key features for forest bathing development: A Q-methodology study applied in ItalyOriginal PaperSofia Baldessari, Alessandro Paletto, Giorgia Di Domenico, Valerio Di Stefano, Sandro SacchelliJ. For. Sci., 2025, 71(7):347-357 | DOI: 10.17221/37/2025-JFS Forest bathing is gaining attention for its health and well-being benefits, leading to growing interest among academics, policymakers, and practitioners. While most studies have focused on its physiological and psychological effects, less is known about how different stakeholders perceive the characteristics that make forest bathing effective and meaningful. This study explored expert and non-expert perspectives on forest bathing in Italy through the Q-methodology, aiming to identify shared and divergent views on key aspects such as site features, accessibility, and perceived benefits. The results highlighted four distinct viewpoints: a scientific-health-oriented perspective emphasising medical efficacy (mainly experts); a preference for more naturalness and ecological integrity (mainly non-experts); a possible socio-economic opportunity (mainly non-experts); and a preference for a more managed forest environment with supporting structures (mainly experts). Despite differences, consensus emerged on several points, including the cultural and physical relevance of forest bathing and the importance of inclusive accessibility while preserving low-impact environments. The findings highlighted the potential of Q-methodology to capture the plurality of stakeholder voices, offering a basis for more inclusive planning and policy development in the context of nature-based well-being initiatives. |
New knowledge in dragon tree researchReviewPetr Madìra, Fabio Attorre, Kay Van DammeJ. For. Sci., 2025, 71(5):205-217 | DOI: 10.17221/9/2025-JFS Dragon trees, arborescent members of the genus Dracaena (Asparagaceae), provide a wide range of ecosystem services and have been ethnobotanically important plants since ancient times. Currently, their relictual distribution is fragmented, populations are isolated and often under threat. We provide a brief overview of scientific studies and the state of knowledge on dragon trees published since 2020, when the last review was published. More than 120 papers dealing with dragon trees have appeared, indicating a significant interest in their research, cultural uses and conservation. The most intensively investigated species are Dracaena cochinchinensis, D. cinnabari, D. draco and D. cambodiana. Almost half of the papers deal with the chemical composition of resin and its bioactivity, in addition to studies on ecology, conservation and genetics. Only a few studies are devoted to taxonomy and ethnobotany. |
Effects of tree characteristics and climatic conditions on gall midge abundance on European beech (Fagus sylvatica L.)Original PaperAdam Véle, Martin Fulín, Maan Bahadur Rokaya, Karolína BíláJ. For. Sci., 2025, 71(11):565-573 | DOI: 10.17221/64/2025-JFS As a consequence of climate change and damage to coniferous forests, European beech (Fagus sylvatica L.) is the preferred plant species for forest restoration in Central Europe. European beech is generally regarded as pest-resistant. However, its vulnerability to secondary pests, for instance, gall-forming midges, may increase with environmental stress such as long drought periods. We analysed the abundance of two gall-forming insects, Mikiola fagi and Hartigiola annulipes, on European beech at 26 forest sites across the Czech Republic, spanning diverse climatic and environmental conditions, using generalised linear mixed models to evaluate the effects of abiotic factors and host tree characteristics. The results revealed that M. fagi was more abundant on younger trees, in stands with lower canopy closure, and under warmer spring conditions. In contrast, the abundance of H. annulipes declined in drought-affected areas. These patterns demonstrate species-specific responses of gall midges to host tree characteristics and climatic variables, suggesting that climate change may favour higher M. fagi abundance. Accordingly, our findings support the establishment of young beech stands under higher canopy closure, for example, beneath the shading of mature trees. |
Degradation of Betula spp. under the influence of biotic factors in the forests of Ukrainian PolissiaOriginal PaperIvanna Kulbanska, Maryna Shvets, Svitlana Matkovska, Tetiana Melnyk, Vasyl Zayachuk, Nataliya Horbenko, Oleh Zymaroiev, Anastasiia ZymaroievaJ. For. Sci., 2026, 72(3):148-160 | DOI: 10.17221/96/2025-JFS
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Altitudinal patterns of woody vegetation diversity in Al-Jabal Al-Akhdar, a Mediterranean mountainOriginal PaperMoussa Masoud, Hazandy Abdul-Hamid, Johar Mohamed, Attia AlsanousiJ. For. Sci., 2026, 72(2):73-81 | DOI: 10.17221/92/2025-JFS
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Cryptostroma corticale and its relationship to other pathogens and pests on Acer pseudoplatanusOriginal PaperFranti¹ek LorencJ. For. Sci., 2024, 70(12):610-618 | DOI: 10.17221/41/2024-JFS In the present study, 20 sycamore maples (Acer pseudoplatanus L.) were evaluated on eight plots (160 trees) affected by sooty bark disease (SBD), caused by Cryptostroma corticale (Ellis & Everh.) P.H. Greg. & S. Waller in Northern Bohemia, Czech Republic. Mortality and presence of common pest taxa were assessed for each tree. Data were statistically evaluated using frequency and principal component analyses. The presence of C. corticale and Prosthecium pyriforme Jaklitsch & Voglmayr were positively related, with a significantly higher occurrence on dead trees. Rhytisma acerinum (Pers.) Fr. and Aceria macrorhyncha Nalepa were also positively related. However, the presence of Drepanosiphum platanoidis Schrank was not clearly related to the other evaluated taxa. Furthermore, C corticale was not present on Norway maple trees (Acer platanoides L.) growing on the plots. The results suggest that (i) the mortality of the sycamore was caused by C. corticale, while P. pyriforme was only an accompanying weak pathogen; (ii) R. acerinum, A. macrorhyncha, and D. platanoidis did not cause the mortality of the sycamore and their presence was not related to C. corticale infection; and (iii) planting more resistant maple species on sites susceptible to attack by SBD, particularly when stressed by drought, is recommended. |
Proposal of a conceptual framework for creating a model for the implementation of green growth indicators in the conditions of the Slovak RepublicOriginal PaperSamuel Fekiaè, Iveta Hajdúchová, Roman Dudík, Kim Hortenská, Martin HalászJ. For. Sci., 2025, 71(8):373-383 | DOI: 10.17221/22/2025-JFS Green growth promotes sustainable economic development by protecting the environment and efficiently using natural resources. Supporting green growth enhances long-term sustainability, quality of life, and climate change mitigation. This article aims to propose a conceptual framework for implementing green growth indicators in Slovakia by comparing their perception with that of the Czech Republic. A questionnaire survey was conducted among 3 281 Slovak and Czech forestry enterprises [Nomenclature of Economic Activities (NACE) classification 02.10], with 1 365 responses. The findings highlight significant differences in the approach to green growth indicators between small and large enterprises and between state and non-state enterprises. Additionally, the study examines how Slovakia and the Czech Republic manage these indicators, forming the basis for a conceptual framework for their implementation in Slovakia. The research contributes to the discourse on green growth and sustainability, key concepts in the 21st century. |
Forest certification management experience in Asia Pacific and Europe: A case study of Malaysia and SwedenOriginal PaperShah Badri Mohd Nor, Ahmad Fariz Mohamed, Shamsul KhamisJ. For. Sci., 2025, 71(6):269-285 | DOI: 10.17221/3/2025-JFS The forest certification is a voluntary programme to ensure that the timber harvested from forests is processed in a sustainable manner by following specific standards. The Programme for the Endorsement of Forest Certification (PEFC) was introduced in 1999 using the bottom-up approach, and it gives flexibility for a country to set up their own PEFC standard based on current practices in sustainable forest management (SFM), regulation, and governance. This practice has led to the development of various PEFC standards for each country; thus, the impact of PEFC certification differs from country to country. In accordance with that, this study aimed to evaluate the PEFC standard application in developed and developing countries, namely in Sweden and Malaysia. The study also analysed the impact of forest certification on governance and economic aspects within Asia Pacific and Europe. The outcome of this study indicates that the PEFC standards developed by these countries showed similarities; for example, both countries are focusing on social and environmental requirements. Meanwhile, the differences were shown in the criteria, terms used, and the focus area. The impact analysis exhibited that countries are facing similar issues, especially market access and premium prices. This study revealed that each country develops different standards based on current practices, forest diversification, and regulations. |
Comparison of shelterwood and clear-cut regeneration methods on morphological traits of naturally regenerated sessile oak [Quercus petraea (Matt.) Liebl.] seedlingsOriginal PaperEli¹ka ®i¾ková, Martin Kománek, Dominika Krausková, Jakub ÈernýJ. For. Sci., 2025, 71(11):542-554 | DOI: 10.17221/77/2025-JFS The natural regeneration of the sessile oak [Quercus petraea (Matt.) Liebl.] is an important aspect of sustainable forest management, especially given the ongoing global climate change and the need to maintain forest stand stability and productivity. This study aimed to evaluate the effect of various regeneration methods on the growth of naturally regenerated sessile oak in the Masaryk Forest Training Enterprise Køtiny, Czech Republic. The research was conducted in seven forest stands where regeneration felling was applied after masting in 2022 (winter 2022/2023) using clear-cut (CC) and shelterwood (S) systems. A total of 531 seedlings were collected from these seven research plots, and the following morphological traits were measured: shoot length, root collar diameter, and biomass allocation. Statistical analysis revealed significant differences (P < 0.05) in shoot length, main root length and total seedling length between the CC and S variants. However, there were no significant differences in root collar diameter or any of the dry-mass parameters between the clear-cut with standards (CC1) variant and the shelterwood plots. Individuals from the CC variants have a 10.3–47.0% wider root collar diameter, 22.3–91.4% more dry mass of the root system, and 51.7–90.4% more dry mass of the aboveground part than individuals in the S variants. These results indicate that the early growth of sessile oak seedlings is greatly influenced by light availability: full sunlight stimulates the development of above- and below-ground parts, whereas canopy cover restricts early growth, particularly in terms of height. The findings highlight the need to consider light and site conditions when planning silvicultural treatments aimed at establishing stable and vigorous oak stands in the face of changing climate conditions. |
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Understanding societal priorities for forest ecosystem services: Survey insights from 'Forestry Days 2024' in SlovakiaOriginal PaperZuzana Sarva¹ová, Jozef Pajtík, Zuzana Dob¹inskáJ. For. Sci., 2025, 71(4):195-204 | DOI: 10.17221/7/2025-JFS Understanding society's demand for forest ecosystem services (FES) is crucial for effective forest management and the development of supportive instruments, such as payments for ecosystem services (PES). This study surveyed visitors at 'Forestry Days 2024' in Slovakia through face-to-face questionnaires, capturing their views on FES and necessary management changes. Results show that regulating services and biodiversity are prioritised over cultural and provisioning FES. Respondents indicated a clear need for changes in forest management to reflect their FES preferences. Notably, perceptions of specific FES varied by gender, age, forestry background, and forest ownership but not by residence type. Public PES were considered the most acceptable policy for enhancing FES management, providing valuable insight for aligning public preferences with sustainable practices in Slovakia. |
Modulating Norway spruce growth and resilience through thinning intensity under climate change conditionsOriginal PaperPetra Jablonická, Pavel Horák, Jakub ÈernýJ. For. Sci., 2025, 71(10):482-500 | DOI: 10.17221/55/2025-JFS In recent decades, Norway spruce (Picea abies) stands have become increasingly vulnerable to frequent droughts and associated outbreaks of secondary biotic pests, resulting in significant degradation of forest ecosystems. To preserve their production and ecological functions, it is necessary to apply well-adapted silvicultural practices that mitigate the risk of stand decline. This study examines the effects of two thinning intensities (moderate and heavy) on stand productivity and resilience under varying site conditions. Three long-term research sites with paired differently thinned plots located within and outside the natural range of Norway spruce in the Czech Republic were analysed. Tree-ring width measurements were used to calculate radial growth trends and four resilience indices (resistance, resilience, recovery and average relative growth reduction). Across sites Blaník (BL), Tetøeví Boudy (TB) and ®elezná Ruda (ZR), basal area increment (BAI) differed significantly between thinning intensities (BL: P = 0.044; TB: P = 0.0076; ZR: P < 0.001), with moderate thinning showing higher BAI at BL and TB, whereas heavy thinning reduced growth at the waterlogged TB site. Site-specific differences in tree growth responses to negative pointer years were evaluated, particularly concerning drought events. Resilience metrics computed for five drought pointer years (1976, 2000, 2003, 2015, 2019) showed no consistent differences between thinning intensities; however, at ZR, heavy thinning yielded higher resilience (Rs) and resistance (Rt) in 2015 and 2019. During drought years, the average relative growth reduction (ARGR) ranged from 3% to 31%, with the lowest values under moderate thinning. Overall, moderate thinning enhanced stand productivity and resilience, whereas heavy thinning had adverse effects at the waterlogged site. These results highlight the need to adapt silvicultural practices to local ecological conditions to ensure long-term stability and productivity. |
Tree growth and soil recovery in Amazonian lands degraded by coca cultivation and grazingOriginal PaperLuis Walther Espinoza-Ambicho, Luis Alberto Valdivia-Espinoza, Warren Ríos-García, Martin Valtera, Luis Alberto Valdivia-Ruiz, Tito Felipe González-Manrique de Lara, Lenka EhrenbergerováJ. For. Sci., 2025, 71(8):393-405 | DOI: 10.17221/47/2025-JFS Soil degradation resulting from illicit coca cultivation and unsustainable grazing practices poses a major challenge to ecosystem restoration in the Peruvian Amazon. This study evaluates the potential of fast-growing tree species to rehabilitate degraded soils while producing economically valuable timber. Monoculture plantations of Corymbia torelliana (eucalyptus), Calycophyllum spruceanum (capirona), Colubrina glandulosa (shaina), and Cedrelinga cateniformis (tornillo) were established on former coca and pasture lands in the Alto Huallaga Valley. We assessed tree growth and key soil physicochemical properties – including soil organic matter (SOM), bulk density (BD), pH, extractable phosphorus (P), and cation exchange capacity (CEC) – in topsoil (0–10 cm) and subsoil (10–40 cm) layers. Eucalyptus and tornillo showed the highest diameter growth, while tornillo plots had significantly higher SOM levels. Soil pH was strongly acidic across all plots, and subsoil P was lowest under tornillo. CEC was highest in eucalyptus and capirona plots. Our findings suggest that tree plantations, particularly with eucalyptus, capirona, and tornillo, represent a viable strategy for the sustainable use and rehabilitation of soils formerly used for coca cultivation and grazing. |
Geographical forest zonation: Perspectives, history and useReviewPetr Dujka, Antonín KusbachJ. For. Sci., 2024, 70(7):335-352 | DOI: 10.17221/5/2024-JFS The rate of climate change advancement and its predicted impact are valid reasons for intense discourse on the topic of choosing the most suitable silvicultural and adaptation measures for the longevity and sustainability of forest communities. Changes in growth conditions of plants can be expected in both vertical (altitudinal) and horizontal (geographical) directions. The anticipated occurrence rate of these changes should, according to climate models, be higher than the natural adaptability rate of longevous tree species. This study focuses on the possibility of utilising regional geographical units of the Czech Republic (Central Europe) – Natural Forest Areas (NFAs) – for introducing the principles of assisted forest migration to national silviculture policies in order to find solutions for the predicted climate change scenarios. The primary objectives are (i) to review the history of the NFA concept, (ii) to discuss the perspectives of NFAs with regard to climate change, and (iii) to propose possible solutions for further development in comparison with alternative approaches to horizontal classification of the Czech Republic. This study is the first of its kind that provides a complete textual and graphic overview of the NFAs' history from 1959 to 2018, highlighting the purpose of NFAs as both frameworks for the maintenance of the genetic potential of forest tree species' populations and frameworks for long-term strategic management planning. Further development of the concept is discussed in connection with the main principles of assisted forest migration and the possibility of employing geospatial modellation analyses for a more precise definition of current NFA borders. An assessment of the areas' potential is also debated, mainly with an emphasis on the zonality of forest sites. |
Diameter growth performance of northern red oak (Quercus rubra L.) in northeastern HungaryOriginal PaperTamás Ábri, Zsolt Keserû, Veronika Honfy, Károly RédeiJ. For. Sci., 2025, 71(8):384-392 | DOI: 10.17221/39/2025-JFS Northern red oak (Quercus rubra L.) is an important introduced tree species in Hungary, particularly in the Nyírség region. This study investigates its diameter growth (DBH) in six forest subcompartments, with stand ages ranging from 20 to 71 years. 5- and 25-year diameter increments were calculated. The distribution of diameter and diameter increment values was also determined. The results show significant growth across all sites. For example, quadratic mean diameter (QMD) increased from 16.4 cm to 30.4 cm over 25 years in the forest subcompartment Encsencs 12A, and from 20.3 cm to 38.4 cm in Ófehértó 2A. Five-year DBH increments ranged from 1.8 cm (± 0.8) in older stands to 4.2 cm (± 0.5) in younger or middle-aged stands. The findings confirm Q. rubra's capacity for steady diameter growth in northeastern Hungary and contribute valuable growth data for future yield modelling and forest management strategies. |
