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Journal articles on the topic 'Natural stands'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Mutharaian, V. N., R. Kamalakannan, V. Narmatha Bai, A. Mayavel, D. Y. Kim, and K. S. Kang. "Fertility variation among individuals in natural stands of Acacia leucophloea." Silvae Genetica 65, no. 1 (2016): 20–30. http://dx.doi.org/10.1515/sg-2016-0003.

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AbstractGrowth characteristics and fertility variations were evaluated at four natural stands of tropical arid zone species,A. leucophloeain southern India. Three stands (TNL 1, TNL 2 and PDM) were situated in dry upland regions while one stand (RKP) was at waterlogged site. The tree height and girth at breast height did not vary between stands in two years. Fertility variation (sibling coefficient, ψ) was estimated based on flowering abundance and fruit set collected for two consecutive years. Fruit production per tree was generally lower in the RKP stand than the other three stands. No year-

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2

He, Shao Juan, Yong Chang Ye, Jian Yun Zhu, and Lu Zhang. "Carbon Accounting and Evaluation for Natural and Planted Forest Stands in South China." Advanced Materials Research 610-613 (December 2012): 3328–31. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.3328.

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Three forest stands, i.e., natural secondary broadleaved mixed stand, 3-year-old eucalypt stand and 1-year-old eucalypt stand, were selected for study in Dongguan, south China, for forest carbon accounting and evaluation. The results showed that forest tree carbon stocks for the three stands were 85.6745 t, 17.5570 t, and 6.5469 t for broadleaved mixed stand, 3-year-old eucalypt stand, and 1-year-old eucalypt stand, respectively, while the forest soil carbon stocks for the three forest stands in a descending order were: 3-year-old eucalypt stand (97.0984 t), 1-year-old eucalypt forest stand (9

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3

Špulák, Ondřej, Jiří Souček, and Jakub Černý. "Do stand structure and admixture of tree species affect Scots pine aboveground biomass production and stability on its natural site?" Journal of Forest Science 64, No. 11 (2018): 486–95. http://dx.doi.org/10.17221/117/2018-jfs.

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The paper analyses stand structure and production on two experimental forest stand series of mature pure and mixed Scots pine stands, growing on natural Scots pine sites in the Czech Republic. Sessile oak was the main admixed species. In mixed stands, Scots pine constituted the dominant level of the stand, admixed species grew mostly as subdominants. Admixture increased stand densities and aboveground biomass production compared to pure stands. Sessile oak with the 20–30% number share within the Scots pine stand led to an increase of the Scots pine tree dimensions and mean stem merchantable wo

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Dostálek, Jiří, Tomáš Frantík, and Miroslava Lukášová. "Genetic differences within natural and planted stands of Quercus petraea." Open Life Sciences 6, no. 4 (2011): 597–605. http://dx.doi.org/10.2478/s11535-011-0034-8.

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AbstractFive sessile oak [Quercus petraea (Matt.) Liebl.] stands from the Czech Republic were studied to learn about the impact of different types of forest management regimes on the genetic differences among tree populations and on population structures. One population had not been markedly affected by human activity, two populations represented unplanted stands that were extensively managed for a long period of time using the coppice system, and two populations were planted stands. Approximately 100 trees from each stand were mapped and subsequently genotyped using 10 nuclear microsatellite

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Huang, Shongming, Yuqing Yang, and Jack Heidt. "A proposed framework for developing an integrated growth and yield monitoring system for Alberta." Forestry Chronicle 80, no. 1 (2004): 114–26. http://dx.doi.org/10.5558/tfc80114-1.

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A province-wide growth and yield (GY) monitoring program, composed of three data collection systems, is proposed for Alberta for the main purpose of verifying GY predictions for various stand types. The first system, based on the 20-km grid proposed for the National Forest Inventory, is recommended for collecting monitoring data on GY predictions for untreated, natural-origin stands. A denser, 10-km grid is recommended for the second system for monitoring GY predictions for untreated, post-harvest stands. The third system is designed for monitoring GY predictions for silviculturally treated st

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6

Meshkova, V. L., and V. L. Borysova. "Incidence of ash dieback in the Left-Bank Forest-Steppe depending on stand characteristics." Forestry and Forest Melioration, no. 136 (June 25, 2020): 157–64. http://dx.doi.org/10.33220/1026-3365.136.2020.157.

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The incidence of ash dieback in the forest-steppe part of Sumy and Kharkiv Regions was analysed taking into account the type of forest site conditions, the stand age, relative stocking density, site index class and the proportion of European ash in the stand composition. Ash dieback is quite widespread in inspected stands of the Left-Bank Forest-Steppe of Sumy and Kharkiv Regions. The disease spreads similarly in natural and artificial stands. It was more often revealed in the fresh fertile forest site conditions, however, such forest site conditions are the most spread and the most favourable

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7

Da Ponte, Emmanuel, Sergi Costafreda-Aumedes, and Cristina Vega-Garcia. "Lessons Learned from Arson Wildfire Incidence in Reforestations and Natural Stands in Spain." Forests 10, no. 3 (2019): 229. http://dx.doi.org/10.3390/f10030229.

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Wildfires are currently considered the major threat to forests in Mediterranean countries. It has been implied that a large percentage of arson-caused fires in Spain are connected with the extensive reforestation programs implemented between 1940 and 1970. However, no consistent studies have been conducted to study the relationships between arson-caused fires and stand origin. Therefore, the goal of this study was to analyze occurrences and model the influence of forest stand origin (artificial or not) on the development of wildfires in peninsular Spain. Twenty-one neural network models were t

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Waldron, Kaysandra, Jean-Claude Ruel, Sylvie Gauthier, and Philippe Goulet. "Comparisons of spatial patterns between windthrow and logging at two spatial scales." Canadian Journal of Forest Research 44, no. 7 (2014): 740–49. http://dx.doi.org/10.1139/cjfr-2013-0402.

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Windthrow is a dominant natural disturbance in the boreal forest of eastern Canada. To provide the range of variability of a natural disturbance, its spatial distribution and patch metrics at stand and landscape scales have to be considered, together with the characterization of its severity. Our study characterized both partial windthrow (PW) and total windthrow (TW) spatial distributions at the landscape scale and patchiness within affected stands (stand scale). Landscape scale corresponded to three areas of about 5000 ha. Stand scale was the finest scale of analysis and corresponded to each

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9

Guldin, James M., and Michael W. Fitzpatrick. "Comparison of Log Quality from Even-Aged and Uneven-Aged Loblolly Pine Stands in South Arkansas." Southern Journal of Applied Forestry 15, no. 1 (1991): 10–17. http://dx.doi.org/10.1093/sjaf/15.1.10.

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Abstract Log grade, number of knots, and log volume of the first two logs, as well as form class of the butt log, were compared across three broad sawtimber categories among even-aged plantations, even-aged natural stands, and uneven-aged natural stands of loblolly pine (Pinus taeda L.) in Ashley County, AR. Trees from uneven-aged stands had butt logs of better log grade than even-aged plantations, particularly in the large sawtimber component where the average difference was half a log grade. Compared to even-aged natural stands, trees from uneven-aged stands had logs of comparable grade. Tre

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10

Roberts, Mark R. "Effects of forest plantation management on herbaceous-layer composition and diversity." Canadian Journal of Botany 80, no. 4 (2002): 378–89. http://dx.doi.org/10.1139/b02-023.

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I compared the species composition and diversity of vascular plants in the herbaceous layer from a chronosequence of intensively managed spruce (Picea) plantations in three age-classes (57, 1012, 1416 years) with natural, mature stands (ca. 90 years) in southeastern New Brunswick, Canada. Total species richness (stand level) averaged 8184 species in the three plantation age-classes compared with 64 species in the natural stands; richness of forest habitat species alone was 3336 in the plantations and 37 in the natural stands. More fertile sites had significantly higher values for Hill's d

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Vasylevskyi, Oleh, Ihor Neyko, Yurii Yelisavenko, and Mykhailo Matusiak. "Characteristics Of Natural Oak Forests Of In Se "Khmilnytske Lisove Hospodarstvo" And Implementation Of Measures For Their Regeneration." Scientific Horizons 24, no. 2 (2021): 37–46. http://dx.doi.org/10.48077/scihor.24(2).2021.37-46.

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As a consequence of the intensive economic use of oak forests in the region, the share of stands of natural origin is significantly reduced, which requires an in-depth study of their condition, productivity, and natural restoration processes. The purpose of this study is to investigate the state, structure, and reforestation processes of oak forests for their further natural reproduction. Generally accepted methods in forestry and comparative ecology were used to compare the dynamics and condition of the studied stands with the reference ones. The paper presents the findings of the study of th

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Herasymchuk, Halyna, Vasyl Mazepa, and Nataliya Tolstushko. "The productivity of oak stands in the Tsumanska Pushcha of Kivertsi National Natural Park." Folia Forestalia Polonica 66, no. 4 (2024): 301–9. https://doi.org/10.2478/ffp-2024-0022.

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Abstract Today, the unique highly productive pine-oak and hornbeam-oak stands in Volynsk Polissia have been preserved in separate areas of the Tsumanska Pushcha Kivertsi National Nature Park (NNP) and need protection, regeneration and study of their condition and productivity at various stages of development. The objects of research were pine-oak and hornbeam-oak stands growing in different types of forests of the NNP. Forest management materials of the park for 2018 and typological analysis methodology were used for the study of the stands. The distribution of stands according to age classes

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Račić, Miloš, Branko Kanjevac, Nikola Martać, Dejan Miletić, and Nenad Petrović. "Assessment of the condition of natural values of the forest management unit "Jasenovo-Božetići" in the area of Southwest Serbia." Sustainable Forestry: Collection, no. 87-88 (2023): 155–64. http://dx.doi.org/10.5937/sustfor2388155r.

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This paper presents the assessment of the condition of natural values of forest stands in relation to the origin, structural form, mixedness as well as in relation to affiliation of the forest stand to forest management type. The object of the research is the Forest management unit "Jasenovo-Božetići" which belongs to the Western forest region in Serbia. Assessment of the condition has been performed in accordance with the method developed on the project entitled Contribution of Sustainable Forest Management to Low Emission and Resilient Development (GCP/SRB/002/GEF). The total area on which t

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14

Baker, James B., and Michael G. Shelton. "Rehabilitation of Understocked Loblolly-Shortleaf Pine Stands—I. Recently Cutover Natural Stands." Southern Journal of Applied Forestry 22, no. 1 (1998): 35–40. http://dx.doi.org/10.1093/sjaf/22.1.35.

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Abstract Two loblolly-shortleaf pine (Pinus taeda L.-P. echinata Mill.) stands were cut to stocking levels of 10, 20, 30, 40, and 50% to simulate recently cutover, understocked, uneven-aged stands. Number of trees ranged from 38 per acre for 10% stocking to 213 per acre for 50% stocking; comparable total basal areas were 4 and 16 ft²/ac, respectively. One stand was on a good site (site index = 90 ft at age 50), the other on a medium site (site index = 75 ft at age 50). As a rehabilitation treatment, all hardwoods 1 in. groundline diameter and larger were injected with a herbicide. At 2, 5, 10,

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15

Honfy, Veronika, Tamás Ábri, Lajos Juhász, János Rásó, Zsolt Keserű, and Károly Rédei. "A simplified method for application of natural regeneration in black locust (Robinia pseudoacacia L.) stands in Hungary." Journal of Forest Science 67, No. 2 (2021): 66–70. http://dx.doi.org/10.17221/147/2020-jfs.

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Black locust (Robinia pseudoacacia L.) is one of the most important forest tree species in Hungary, covering approximately 24% of the forest land and providing 25% of the annual timber supply. One third of these black locust stands are high forests (planted with seedlings) and the remaining stands are coppices. An auxiliary table was developed for planning the black locust natural regeneration in order to determine the sprouting criteria based on stand volume at the final cutting age. Twenty forest subcompartments were selected for investigating the possibility of black locust regeneration by

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Meshkova, Valentyna, Tetiana Pyvovar, and Olena Kuznetsova. "The age structure of Ulmus L. stands in the eastern regions of Ukraine." Наукові праці Лісівничої академії наук України, no. 25 (November 23, 2023): 29–38. http://dx.doi.org/10.15421/412302.

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The aim of the research was to determine the features of the age structure for natural and artificial elm stands depending on species, origin, and region. The proportion of the stand area of natural and artificial stands of each elm species by 10-year age classes was evaluated for the forest fund of the Donetsk, Kharkiv, and Sumy Regional Forest and Hunting Management Administrations (RFHMA). Four main forest-forming elm species are represented in the forest fund of the Donetsk and Kharkiv RFHMA (U. minor, U. laevis, U. glabra, and U. pumila). In the Sumy RFHMA, there are three forest-forming

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17

Sharma, Mahadev. "Climate Effects on Black Spruce and Trembling Aspen Productivity in Natural Origin Mixed Stands." Forests 13, no. 3 (2022): 430. http://dx.doi.org/10.3390/f13030430.

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Forest managers need site productivity estimates for tree species growing in mixed stands. Models developed in the past are generally for pure stands and don’t factor in the effects of climate change on site productivity. Therefore, site index (SI) models were developed for black spruce (Picea mariana Mill. B.S.P.) and trembling aspen (Populus tremuloides Michx.) trees grown in natural origin mixed stands. For this, 186 trees (93 black spruce and trembling aspen each) were sampled from 31 even-aged natural mixed stands (sites) (3 trees/species/site) across Ontario, Canada. Stand height growth

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18

Olson, Matthew G., Spencer R. Meyer, Robert G. Wagner, and Robert S. Seymour. "Commercial thinning stimulates natural regeneration in spruce–fir stands." Canadian Journal of Forest Research 44, no. 3 (2014): 173–81. http://dx.doi.org/10.1139/cjfr-2013-0227.

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Understanding the response of tree regeneration following commercial thinning treatments can improve planning in managed forests dependent on natural regeneration. We used long-term commercial thinning experiments in eastern spruce–fir stands of Maine, USA, to test two hypotheses: (1) commercial thinning increases the density of tree regeneration and (2) tree regeneration density increases with increasing thinning intensity. A decade after thinning, densities of softwood and hardwood regeneration were 10 times greater in thinned stands than unthinned stands. The abundance of small softwood (0.

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Sullivan, Thomas P., Druscilla S. Sullivan, Pontus M. F. Lindgren, and Douglas B. Ransome. "Silviculture and Wildlife: Snowshoe Hare Abundance across a Successional Sequence of Natural and Intensively Managed Forests." ISRN Ecology 2012 (April 17, 2012): 1–10. http://dx.doi.org/10.5402/2012/593103.

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We tested the hypotheses H1 that relative habitat use by snowshoe hares (Lepus americanus) would have a bimodal distribution with the highest abundance in young lodgepole pine (Pinus contorta) stands (both managed and unmanaged), minimal numbers in mature forests, and moderate abundance in old-growth forests and H2 that habitat use would increase in response to enhanced stand attributes from PCT (precommercial thinning) and fertilization treatments. Habitat use was measured by counts of fecal pellets of hares from 1999 to 2003 in forest stands in south-central British Columbia, Canada. Our res

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Wilson, Duncan S., Robert S. Seymour, and Douglas A. Maguire. "Density Management Diagram for Northeastern Red Spruce and Balsam Fir Forests." Northern Journal of Applied Forestry 16, no. 1 (1999): 48–56. http://dx.doi.org/10.1093/njaf/16.1.48.

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Abstract A stand-density management diagram is presented for use in northeastern red spruce and balsam fir forests. The diagram was derived from an extensive archived data set collected during the 1970s from fully stocked stands throughout northern Maine and a more recent study of precommercially thinned stands. The negative exponential relationship between mean stemwood volume per tree and stand density, commonly known as the "self-thinning rule, "was formulated to define a biological maximum stand density. The maximum size-density equation can be used to calculate the relative density of any

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Francis Faustine Laswai, Boniface Hussein Massawe, Salim Mohamed Maliondo, Charles Joseph Kilawe, Ezekiel Edward Mwakalukwa, and Eva Ephraim Mtengeti. "Evaluation of soil nutrient status in three forest stands of Sao Hill Forest plantation in Iringa, Tanzania." International Journal of Scholarly Research in Multidisciplinary Studies 4, no. 2 (2024): 025–37. http://dx.doi.org/10.56781/ijsrms.2024.4.2.0023.

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We investigated soil physical and chemical properties between natural vegetation, first, and second-rotation Pinus patula stands. The study provides valuable information for plantation management and a database for soil nutrient status in Sao Hill forest plantation. Soil samples from 120 plots established on three forest stands analyzed for physical and chemical properties. Analysis of variance applied to ascertain nutrients variations between stand types and soil depth. Topsoils have sandy loam and subsoil clay loam textural classes. Soil bulk density on topsoil were 1.18, 1.34, 1.28 g cm-3 a

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Lucier, Alan A. "Pine Growth-Rate Changes in the Southeast: A Summary of Key Issues for Forest Managers." Southern Journal of Applied Forestry 12, no. 2 (1988): 84–89. http://dx.doi.org/10.1093/sjaf/12.2.84.

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Abstract Forest inventory data collected by the USDA Forest Service shows that pine forests in the Southeast have changed in many ways since the 1950s. The average age and density of natural stands has increased substantially over the past 30 years, perhaps reflecting the maturation of a large number of stands established between 1945 and 1965. Growth rates of some classes of trees and stands have decreased, but it is not known whether increases in age and density are largely responsible. The existence of growth reductions in natural stands is an expected consequence of the documented changes

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Lowell, Eini C., Christine L. Todoroki, and Ed Thomas. "Comparing Timber and Lumber from Plantation and Natural Stands of Ponderosa Pine." Western Journal of Applied Forestry 24, no. 3 (2009): 137–43. http://dx.doi.org/10.1093/wjaf/24.3.137.

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Abstract Data derived from empirical studies, coupled with modeling and simulation techniques, were used to compare tree and product quality from two stands of small-diameter ponderosa pine trees growing in northern California: one plantation, the other natural. The plantation had no management following establishment, and the natural stand had no active management. Fifty trees of similar diameter classes were selected from each site, measured, bucked into logs, and sawn into boards, and the boards were scanned for defects. Trees from the plantation stand demonstrated less variability in tree

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Rouvinen, S., T. Kuuluvainen, and L. Karjalainen. "Coarse woody debris in old Pinus sylvestris dominated forests along a geographic and human impact gradient in boreal Fennoscandia." Canadian Journal of Forest Research 32, no. 12 (2002): 2184–200. http://dx.doi.org/10.1139/x02-144.

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Coarse woody debris (CWD) was studied in old Pinus sylvestris L. dominated forests in three geographic regions in the middle boreal vegetation zone: (i) in Häme in southwestern Finland, characterized by a long history of forest utilization, (ii) in Kuhmo in northeastern Finland, with a more recent history of forest utilization, and (iii) in the Vienansalo wilderness area in northwestern Russia, characterized by large areas of almost natural forest. Within the geographic regions the measured 0.2-ha plots were divided into three stand types according to the degree of human impact: (i) natural st

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Zahradník, D., S. Vacek, L. Bílek, I. Nosková, and Z. Vacek. "Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development." Journal of Forest Science 56, No. 11 (2010): 531–40. http://dx.doi.org/10.17221/126/2010-jfs.

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Horizontal structure on 38 permanent research plots is described for juvenile growth and developmental phases (natural seeding, advance growth, plantations) and tree layer of a parent stand. Hopkins-Skellam index, Pielou-Mountford index, Clark-Evans index and Ripley's K-function were computed. The results are presented separately for beech stands, mixed stands, spruce stands, stands in the timberline ecotone and relict pinewood. The numbers and distribution of natural and combined regeneration recruits are mostly sufficient from the aspect of ecological, environmental and production functions

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Somers, Greg L., and Robert M. Farrar. "Biomathematical Growth Equations for Natural Longleaf Pine Stands." Forest Science 37, no. 1 (1991): 227–44. http://dx.doi.org/10.1093/forestscience/37.1.227.

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Abstract Simultaneous stand level basal area projection and survival prediction equations with useful extrapolative properties are derived from assumptions that reflect many of the currently accepted concepts about stand development. Both equations are modifications of the Chapman-Richard's growth curve which has parameters for the asymptote and the annual rate of growth towards the asymptote. The original form is modified by defining the asymptote and annual growth rate as functions of changing stand conditions. For basal area projection the asymptote is a function of number of trees which ap

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Baker, James B., and Michael G. Shelton. "Rehabilitation of Understocked Loblolly-Shortleaf Pine Stands—IV. Natural and Planted Seedling/Sapling Stands." Southern Journal of Applied Forestry 22, no. 1 (1998): 53–59. http://dx.doi.org/10.1093/sjaf/22.1.53.

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Abstract A 3- to 6-yr-old naturally regenerated even-aged loblolly pine (Pinus taeda L.) stand and a 5-yr-old loblolly pine plantation on good sites (SILob = 85 to 90 ft at 50 yr) were cut to density levels of 50, 90, 180, 270, and 360 seedlings and/or saplings/ac. Two pine release treatments (none and individual tree release with a herbicide) were applied to the natural stand, but were not imposed in the plantation because site preparation treatments were applied before planting. At 2, 5, and 10 yr after installation, plots were inventoried to determine: (1) the lowest threshold of seedling/s

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Rumiantsev, Maksym, Volodymyr Luk’yanets, Oleksii Kobets, et al. "Distribution and natural regeneration of Tilia cordata Mill. in Ukrainian plain forests in a changing climate." Folia Forestalia Polonica 63, no. 2 (2021): 125–37. http://dx.doi.org/10.2478/ffp-2021-0014.

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Abstract The aim of this study was to assess the current state of small-leaved lime stands under climate change, as well as to identify optimal conditions for the occurrence and further growth of natural lime regeneration under the stand canopy to grow productive and sustainable mixed stands. The areas of small-leaved lime (Tilia cordata Mill.) stands in plain Ukrainian forests and mixed stands with English oak (Quercus robur L.) were defined according to reference materials (as of 2016). Growth and liveability peculiarities of natural regeneration of lime under the canopy of oak-lime stands i

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Matisone, Ilze, Juris Katrevičs, Diāna Jansone, et al. "Ground Cover Vegetation in Differently Managed Hemiboreal Norway Spruce Stands: Plantation vs. Natural Regeneration." Diversity 16, no. 4 (2024): 203. http://dx.doi.org/10.3390/d16040203.

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Forest plantations, which have a simplified structure and composition, are becoming more frequent, raising concerns regarding their contribution to biological diversity in highly managed landscapes. The biological value of a stand has been related to stand age, although stand properties, which are often intercorrelated with it, yet are manageable, might be of primary importance. The relationships between stand properties (age, structure and composition) and ground cover vegetation, as a proxy for biological value, were assessed in Norway spruce stands with contrasting land use history (low-den

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Żukowska, Weronika Barbara, Andrzej Lewandowski, Błażej Wójkiewicz, et al. "Changes in the gene pool composition of Scots pine depending on the mode of regeneration." Dendrobiology 89 (March 1, 2023): 46–55. http://dx.doi.org/10.12657/denbio.089.005.

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Silvicultural practices can alter forest genetic resources in unpredictable ways, thereby influencing the adaptive and evolutionary potential of forest populations. This is especially alarming in the case of species with more northern distribution centers, due to the lack of area that can be colonized further north. In this article, we studied the genetic diversity of the Scots pine seed tree stand in Poland, its natural regeneration, and two artificially established progeny plantations. The research aimed to determine whether the regeneration mode had affected the efficiency of the gene pool

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Permata, Fitriana Wulansari, Budi Kuncahyo, Haruni Krisnawati, and Relawan Kuswandi. "Stand Structure Dynamic of Logged Over Forest after Selective Timber Harvesting in Boven Digoel, Papua." Jurnal Sylva Lestari 11, no. 1 (2023): 177–91. http://dx.doi.org/10.23960/jsl.v11i1.610.

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Logged-over natural forest has a different stand structure and composition from primary natural forest due to logging activities. This study aimed to examine forest dynamics (upgrowth, ingrowth, and mortality) of the logged-over forest in PT. Tunas Timber Lestari (TTL) Papua in both stands with and without treatments. The data used in this study were based on the measurement in the Permanent Measurement Plots (PUP) for ten years. This study grouped data into five diameter classes of 10 cm intervals and three wood species groups (meranti timber, mixed timber, and non-commercial timber). Data an

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Shibuya, Masato, and Satoshi Ishibashi. "Stand-level windthrow patterns and long-term dynamics of surviving trees in natural secondary stands after a stand-replacing windthrow event." Forestry: An International Journal of Forest Research 92, no. 4 (2019): 473–80. http://dx.doi.org/10.1093/forestry/cpz015.

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Abstract We examined typhoon windthrow patterns in stand-scale permanent plots within three natural forests and the long-term dynamics of surviving trees in two of these plots. The aim was to verify whether pre-disturbance composition and structure affected windthrow damage and stand recovery. The stands, which were in Hokkaido, the northernmost main island of Japan, differed in pre-disturbance composition (coniferous, mixed and broadleaved stands) and structure, and the basal area losses by the windthrow event were 81–93 per cent. Tree mortality was significantly related to tree size (diamete

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Vacek, S., K. Matějka, J. Mayová, and V. V Podrázský. "Dynamics of health status of forest stands on research plots in the Šumava National Park." Journal of Forest Science 49, No. 7 (2012): 333–47. http://dx.doi.org/10.17221/4708-jfs.

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The paper summarises an evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Ple&scaron;n&yacute; Forest District. Analysis is based on dendroecological reactions of particular tree individuals in the stand structure. The tree damage was evaluated annually (during the period 1997&ndash;2002), based especially on defoliation. Natural and semi-natural, especially mixed forest stands with dominant beech in the Ple&scaron;n&yacute; Forest District territory were most tolerant, allochthonous secondary

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Gama-Rodrigues, Antonio Carlos da, Nairam Félix de Barros, and Nicholas Brian Comerford. "Biomass and nutrient cycling in pure and mixed stands of native tree species in southeastern Bahia, Brazil." Revista Brasileira de Ciência do Solo 31, no. 2 (2007): 287–98. http://dx.doi.org/10.1590/s0100-06832007000200011.

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The objective of this paper is to study selected components of the nutrient cycle of pure and mixed stands of native forest species of Atlantic Forest in southeastern Brazil. Tree diameter, height, above-ground biomass, and nutrient content were determined in 22-year-old stands. Litterfall, litter decomposition, and nutrient concentration were evaluated from August 1994 to July 1995. The following species were studied: Peltogyne angustiflora, Centrolobium robustum, Arapatiella psilophylla, Sclerolobium chrysophyllum, Cordia trichotoma, Macrolobium latifolium. The litter of a natural forest and

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Jaworski, A., and Zb KoŁodziej. "Natural loss of trees, recruitment and increment in stands of primeval character in selected areas of the Bieszczady Mountains National Park (South-Eastern Poland)." Journal of Forest Science 48, No. 4 (2019): 141–49. http://dx.doi.org/10.17221/11867-jfs.

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In three investigated stands the highest increment (8.8 m3/ha per year, i.e. 1.5% of the actual stand volume, measured at the end of the control period) was reached by Jawornik I stand in the initial period of the growing up stage, and Tworylczyk stand in the advanced growing up stage (7.4 m3/ha per year, i.e. 1.2% of the actual stand volume). Jawornik II stand, in the optimum stage, the aging phase, had the lowest increment (3.9 m3/ha per year, i.e. 0.7% of the actual stand volume). The process of a natural volume loss was the most intensive in Tworylczyk stand (7.6 m3/ha per year), a little

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Janas, P. S., and D. G. Brand. "Comparative Growth and Development of Planted and Natural Stands of Jack Pine." Forestry Chronicle 64, no. 4 (1988): 320–28. http://dx.doi.org/10.5558/tfc64320-4.

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This study compares growth yield, and stem quality differences at age 21 between plantations spaced at 2.13 × 2.13 m (2204 stems/ha) and 4.27 × 4.27 m (548 stems/ha), and a nearby natural jack pine stand of identical age (initial density of 29 800 stems/ha). Merchantable volume/ha was greatest at the 2.13 m spacing, followed by the less dense plantation and natural stand. Total volume/ha (trees > 1.3 m height) was also greatest in the 2.13 m plantation, followed by the natural stand and the 4.27 m plantation. Individual tree mean merchantable volumes decreased with increasing density. Heigh

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Burru, Dagnew Yebeyen, Jayaraman Durai, Melaku Anteneh Chinke, et al. "Allometric Models for Estimating Biomass and Carbon Stocks in Natural and Homestead Highland Bamboo Stands in the Sidama Region, Ethiopia." Forests 16, no. 4 (2025): 701. https://doi.org/10.3390/f16040701.

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Highland bamboo (Oldeania alpina) plays a vital role in supporting local livelihoods, fostering biodiversity conservation and sustainable land management. Despite these benefits, its significant potential for carbon sequestration remains underutilized within Ethiopia’s climate mitigation strategies. In this study, we developed site-specific allometric equations to assess the biomass and carbon storage potential of highland bamboo. Data were collected from the Garamba natural bamboo forest and Hula homestead bamboo stands in the Sidama Regional State, Southern Ethiopia. Data on stand density an

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Čerevková, Andrea, Marek Renčo, Dana Miklisová, and Erika Gömöryová. "Soil Nematode Communities in Managed and Natural Temperate Forest." Diversity 13, no. 7 (2021): 327. http://dx.doi.org/10.3390/d13070327.

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Forest management and the stand age play key roles in determining the composition of soil biota, including nematodes. We analysed the effect of the interaction between stands of natural forest and stands influenced by human activity on nematode communities, necessary for realistically assessing the specific potentials of forest soils, plant protection, forest management, and land use management. Nematode communities were evaluated and compared in managed beech and spruce forests in three age classes (0–20, 40–60, and 100–120 years old) and an unmanaged old-growth temperate forest. A total of 5

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Helander, Marjo, Piippa Wäli, Timo Kuuluvainen, and Kari Saikkonen. "Birch leaf endophytes in managed and natural boreal forests." Canadian Journal of Forest Research 36, no. 12 (2006): 3239–45. http://dx.doi.org/10.1139/x06-176.

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Fungal endophytes of birch trees are nonsystemic and transmitted horizontally by spores. Because the endophytes reinfect the leaves every growing season, the frequency of occurrence and species composition of the fungi depend on various abiotic and biotic environmental conditions. This was a study of possible effects of silviculture and local environmental variables on endophyte frequencies. Silver birch (Betula pendula Roth) leaves were sampled from seedling stands (five transects), managed mature forest (seven transects), and old natural forest (five transects) in the boreal vegetation zone

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Tudoran, Gheorghe-Marian, Avram Cicșa, Alexandru-Claudiu Dobre, Maria Cicșa, Ionuț-Silviu Pascu, and Ştefan Leca. "Health and Growth of Black Pine outside Its Natural Distribution Range in the Romanian Carpathians." Forests 14, no. 5 (2023): 884. http://dx.doi.org/10.3390/f14050884.

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In the last decade, coniferous stands outside their natural range in Romania have experienced declines in both their health and growth and, in tandem with global climate trends, these forests are becoming even more threatened. We studied the relationship between tree growth and defoliation as an indicator of tree health. The data came from black pine stands monitored from 2012 to 2021 in the Postăvarul Massif in the Romanian Carpathians. Analyses were carried out on 508 individual trees based on their defoliation and radial growth data and also at the stand level. The results revealed an incre

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Tikhonova, M. V., A. V. Buzylev, Ya S. Zhigaleva, et al. "Ecological assessment of forest stands in the Tsaritsyno Natural Historical Park." Timiryazev Biological Journal, no. 3 (December 19, 2024): 52–60. https://doi.org/10.26897/2949-4710-2024-2-3-52-60.

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Parks and green areas in large cities are very important objects, not only for tourism and recreation, but they also perform important ecological functions, clean the air from gases and dust, create a favorable microclimate, and thus create an environmentally friendly framework in cities. The most important factor in the condition of green areas is the ecological condition of forest stands, which form the main green framework. The article considers the condition of forest stands in dependence on the landscape and intensity of recreational load on the territory of the Tsaritsyno Historical Park

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Abellanas, Begoña, Manuel Abellanas, Arne Pommerening, Dolores Lodares, and Simón Cuadros. "A forest simulation approach using weighted Voronoi diagrams. An application to Mediterranean fir Abies pinsapo Boiss stands." Forest Systems 25, no. 2 (2016): e062. http://dx.doi.org/10.5424/fs/2016252-08021.

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Aim of study: a) To present a new version of the forest simulator Vorest, an individual-based spatially explicit model that uses weighted Voronoi diagrams to simulate the natural dynamics of forest stands with closed canopies. b) To apply the model to the current dynamics of a Grazalema pinsapo stand to identify the nature of its competition regime and the stagnation risks it is currently facing.Area of study: Sierra del Pinar de Grazalema (S Spain)Material and methods: Two large plots representative of Grazalema pinsapo stands were used to fit and validate the model (plus 6 accesory plots to

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Béland, Martin, and Bruno Chicoine. "Tolerant hardwood natural regeneration 15 years after various silvicultural treatments on an industrial freehold of northwestern New Brunswick." Forestry Chronicle 89, no. 04 (2013): 512–24. http://dx.doi.org/10.5558/tfc2013-092.

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We examined applicability of various partial cutting systems in order to regenerate tolerant hardwood stands dominated by sugar maple (Acer saccarhum), American beech (Fagus grandifolia) and yellow birch (Betula alleghaniensis) on northern New Brunswick J.D. Irving Ltd. freehold land. Sampling of 1065 one-m2 plots in 31 stands managed by selection cutting, shelterwood method and strip or patch cutting and in six control stands allowed a 15-year retrospective study of natural regeneration in stands of low residual densities and with minimal soil disturbance and no control of competing vegetatio

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Vacek, S., V. Podrázský, and K. Matějka. "Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts." Journal of Forest Science 52, No. 10 (2012): 457–73. http://dx.doi.org/10.17221/4527-jfs.

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The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Ple&scaron;n&yacute; Forest District. Analysis is based on dendroecological reactions of particular tree individuals in the stand texture. The tree damage was evaluated annually (in the period 1997&ndash;2005), based especially on defoliation. The most tolerant were the natural and semi-natural, especially mixed forest stands with dominant beech in the Ple&scaron;n&yacute; Forest District territory, the least tolerant w

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Kuttner, Ben, Jay R. Malcolm, and Sandy M. Smith. "Multi-cohort stand structure in boreal forests of northeastern Ontario: Relationships with forest age, disturbance history, and deadwood features." Forestry Chronicle 89, no. 03 (2013): 290–303. http://dx.doi.org/10.5558/tfc2013-060.

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Multi-cohort forest management (MFM) is a natural disturbance emulation strategy for boreal forests that recommends a diversification of silvicultural techniques to emulate three broad successive phases of post-fire development, termed “cohort classes”. Here, for boreal mixedwood (n = 308) and black spruce (n = 108) stands of northeastern Ontario, we: 1) present a multivariate approach to classify the three cohort classes based on a broad set of stand structural variables related to live-tree diameters, densities, and measures of canopy stratification and 2) investigate variation in stand age,

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Maleki, Kobra, Mohamadou Alpha Gueye, Benoit Lafleur, Alain Leduc, and Yves Bergeron. "Modelling Post-Disturbance Successional Dynamics of the Canadian Boreal Mixedwoods." Forests 11, no. 1 (2019): 3. http://dx.doi.org/10.3390/f11010003.

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Natural disturbances, such as fire and insect outbreaks, play important roles in natural forest dynamics, which are characterized over long time scales by changes in stand composition and structure. Individual-based forest simulators could help explain and predict the response of forest ecosystems to different disturbances, silvicultural treatments, or environmental stressors. This study evaluated the ability of the SORTIE-ND simulator to reproduce post-disturbance dynamics of the boreal mixedwoods of eastern Canada. In 1991 and 2009, we sampled all trees (including seedlings and saplings) in

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Gupta, Sanatan Das, Bradley D. Pinno, and Tim McCready. "Commercial thinning effects on growth, yield and mortality in natural lodgepole pine stands in Alberta." Forestry Chronicle 96, no. 02 (2020): 111–20. http://dx.doi.org/10.5558/tfc2020-016.

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There is an expected decrease in the short to mid-term timber supply of lodgepole pine (Pinus contorta var. latifolia) in Alberta, Canada due to the impacts of past fires and the mountain pine beetle outbreak. Commercial thinning is a potential option for increasing mid-term sawlog timber supply by decreasing the time needed for individual trees to reach merchantable size, through providing access to fiber earlier in the rotation, and from the ability to keep mature stands on the stump longer. In the current study, we evaluated the effects of commercial thinning in stands of different ages. St

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Yakhyayev, Aydin, Elshad Gurbanov, Farzaliyev Vahid, and Farid Seyfullayev. "The regeneration of Oriental beech (Fagus orientalis Lipsky) share in the secondary hornbeam stands using." Journal of Forest Science 67, No. 1 (2021): 12–20. http://dx.doi.org/10.17221/22/2020-jfs.

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In the paper, the results of the complex cuttings were presented in the secondary hornbeam stands with the aim of regenerating the natural beech stands in the northern regions of Azerbaijan. For this purpose, three complex cutting procedures were carried out with a recurrence at 5 and 10 years in four sites of the secondary hornbeam stands in the northern regions. The experimental plots were characterised with: a stand density of 0.5–0.7, the age of the forest stands of 60–130 years, undergrowth of 12–25 years, a stand volume of 130–200 m3·ha–1, the beech percentage in the composition of stand

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Vysotska, Natalia, Maksym Rumiantsev, and Oleksii Kobets. "White poplar (Populus alba L.) stands in Ukraine: the current state, growth specificities and prospects of using for forest plantations." Folia Oecologica 48, no. 1 (2021): 63–72. http://dx.doi.org/10.2478/foecol-2021-0008.

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Abstract The aim of the study was to assess the current state and evaluate the productivity of white poplar stands by natural zones within Ukraine and to define the prospects for their use for plantation forest cultivation. The objects of the study were white poplar stands in Ukrainian forests grown on the area of more than 7,600 hectares in various natural zones, namely Polissya (forest zone in Ukraine), Forest-Steppe, and Steppe. The study was carried out based on the analysis of forest inventory data (Ukrainian forest fund database) containing given stand characteristics such as origin, age

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Baysal, İsmail. "Vertical Crown Fuel Distributions in Natural Calabrian Pine (Pinus brutia Ten.) Stands." Croatian journal of forest engineering 42, no. 2 (2021): 301–12. http://dx.doi.org/10.5552/crojfe.2021.800.

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Calabrian pine (Pinus brutia Ten.) is the most widely distributed coniferous species in Turkey. Forests mostly composed of Calabrian pine constitute the most flammable forests in fire sensitive regions of the country. Especially, regenerated and immature stands of this species have the most fire-prone fuel type. This study evaluates the results of vertical crown fuel distribution and develops some crown fuel models to explain canopy fuel characteristics in natural Calabrian pine stands. A total of 35 trees were cut down and crown fuels were determined vertically. The highest crown fuel load wa

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