Log in

Relevant bibliographies by topics / Permanent study plots / Journal articles

To see the other types of publications on this topic, follow the link: Permanent study plots.

Journal articles on the topic 'Permanent study plots'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Permanent study plots.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Matthews, John A., and Elin Gunnlaugsdottir. "Permanent Plots in Iceland: A Pure and Applied Study." Journal of Biogeography 13, no. 4 (1986): 359. http://dx.doi.org/10.2307/2845019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Xu, Yun, Feng Ri Li, and Shi Lei Jiang. "Study on Diameter Distribution of Natural Secondary Forest." Advanced Materials Research 402 (November 2011): 758–65. http://dx.doi.org/10.4028/www.scientific.net/amr.402.758.

Full text

Abstract:

This study used 45 permanent sample plots investigated in 2007 and 6 permanent sample plots investigated in 2008 in Mao’er Mountain natural secondary forest area and 68 permanent plots investigated in 2008 in Niuxinshan institute in Muling. Through making the chat of diameter distribution histogram the analysis of diameter distribution, use a variety of distribution functions to fit the transformation regularities, set up parameter regression model. Research results show: the fitting effects of exponential distribution and Weibull distribution are good, and exponential distribution is better.

APA, Harvard, Vancouver, ISO, and other styles

3

Roozen, A. J. M., and V. Westhoff. "A study on long-term salt-marsh succession using permanent plots." Vegetatio 61, no. 1-3 (1985): 23–32. http://dx.doi.org/10.1007/bf00039807.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Myster, Randall W., and Michael P. Malahy. "Is there a middle way between permanent plots and chronosequences?" Canadian Journal of Forest Research 38, no. 12 (2008): 3133–38. http://dx.doi.org/10.1139/x08-148.

Full text

Abstract:

Although permanent plots have proven critical to studies of vegetation dynamics, their logistic limitations have led to the wide use of chronosequences as an alternative. Here, we test whether or not an approach combining permanent plots and chronosequences could be used successfully to accurately predict the vegetation changes that one would see in permanent plots in the same area. We used plot data from five pastures in the Luquillo Mountains of Puerto Rico, USA, and found that (i) for species composition and abundance, the five pastures did not form a single trajectory or show any convergen

APA, Harvard, Vancouver, ISO, and other styles

5

Allen, Micky G., and Harold E. Burkhart. "A comparison of alternative data sources for modeling site index in loblolly pine plantations." Canadian Journal of Forest Research 45, no. 8 (2015): 1026–33. http://dx.doi.org/10.1139/cjfr-2014-0346.

Full text

Abstract:

Site index curves are generally developed from one of three data sources: (i) permanent sample plots, (ii) temporary sample plots, or (iii) stem analysis data. Permanent sample plots are considered to be the best data source for modeling height–age relationships; however, due to time and cost constraints, analysts may consider using temporary sample plots or stem analysis data for equation fitting. Temporary sample plot and stem analysis data, although more quickly obtained, require assumptions that are often not met when modeling site index. The question becomes how models developed from temp

APA, Harvard, Vancouver, ISO, and other styles

6

Way, M. O., and R. G. Wallace. "Control of Rice Water Weevil With Fipronil in A Drill-Seeded, Delayed Flood Culture–Eup Study, 1996." Arthropod Management Tests 22, no. 1 (1997): 297. http://dx.doi.org/10.1093/amt/22.1.297.

Full text

Abstract:

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was a non-replicated experimental use permit (EUP) study with 4 treatments. Plot size was 3 acres. On 26 Mar, plots were fertilized by air with 55-40-0 at 56 lb nitrogen/acre. Fertilizer was in-corporated with a “Do-all” on the same day. On 27 Mar, a designated plot was treated with Fipronil 80 WG at 0.0325 lb (AI)/acre using a large (11 nozzle, tip size80015, 50 mesh screens), 2 person, hand-held spray boom pressurized with CO2. Final spray volume was 10.6 gpa. Following application, t

APA, Harvard, Vancouver, ISO, and other styles

7

Pansonato, André, Tamí Mott, and Christine Strüssmann. "Anuran amphibians' diversity in a northwestern area of the Brazilian Pantanal." Biota Neotropica 11, no. 4 (2011): 77–86. http://dx.doi.org/10.1590/s1676-06032011000400008.

Full text

Abstract:

In the Pantanal, the largest continuous floodplain in the world, the diversity and distribution of anuran amphibians vary in and across distinct subregions and distinct habitats occurring along inundation gradients. Permanent and natural aquatic habitats are relatively scarce in the Pantanal, and occurrence of temporary aquatic habitats varies seasonally, depending on rains. We here present results of evaluations of anuran's species richness and abundance in a seasonally flooded area in the northwestern section of the Pantanal (Fazenda Baía de Pedra, Cáceres municipality, state of Mato Grosso,

APA, Harvard, Vancouver, ISO, and other styles

8

Bakker, J. P., H. Olff, J. H. Willems, and M. Zobel. "Why do we need permanent plots in the study of long-term vegetation dynamics?" Journal of Vegetation Science 7, no. 2 (1996): 147–56. http://dx.doi.org/10.2307/3236314.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Rachana, A. G. Koppad, Dinesh CV, Pracheeka J. Shetty, and Gowri B. Gowda. "Evaluating Annual Growth Dynamics Across Forest Types Using Permanent Sample Plots in Yellapur Forest Division, Karnataka, India." Journal of Scientific Research and Reports 31, no. 1 (2025): 145–52. https://doi.org/10.9734/jsrr/2025/v31i12753.

Full text

Abstract:

Annual tree increment requires repeated assessments on permanent sample plots, which are crucial for evaluating changes in tree size and stem volume. These plots enable long-term monitoring to estimate timber production and analyse growth dynamics. This study examines the current annual increment of growth parameters like tree height, GBH, basal area, and volume in dry, moist deciduous, and semi-evergreen forests within the Yellapur Forest Division, Uttara Kannada, Karnataka. The Permanent sample plots were utilized to assess growth patterns across various forest types. Total of nine one-hecta

APA, Harvard, Vancouver, ISO, and other styles

10

Ilkiv, N. V. "Certain aspects of state registration of the right to permanent use of a land plot." Analytical and Comparative Jurisprudence, no. 2 (May 11, 2024): 345–50. http://dx.doi.org/10.24144/2788-6018.2024.02.59.

Full text

Abstract:

The article is devoted to the study of the state of legal regulation of the right to permanent use of a land plot in Ukraine. The author focuses on the changes in the legal regulation of land relations as a result of land privatization, which, accordingly, affected the change in the essence of the right of permanent land use. Legislative attempts to force the subjects of the right of permanent use of land plots to re-register have led to a decrease in the number of objects of such a right. At the legislative level, the subject composition of this right has been repeatedly changed. However, thi

APA, Harvard, Vancouver, ISO, and other styles

11

Oliveira, Cláuber Muniz de, Alexandre Henrique de Sousa Lima, and Marcela Álvares Oliveira. "Characterization of solid waste in the permanent preservation area of the Bate Estacas stream, Porto Velho, Rondônia." Nature and Conservation 14, no. 2 (2021): 22–32. http://dx.doi.org/10.6008/cbpc2318-2881.2021.002.0003.

Full text

Abstract:

Permanent Preservation Areas serve as filters to prevent impurities from reaching water bodies, protecting the banks from erosion, avoiding the obstruction of rivers caused by waste dumped in inappropriate places. The present study aimed to inventory, quantify, and analyze the types of solid waste irregularly deposited on the banks and in the Bate Estacas stream in Porto Velho, Rondônia. The Bate Estaca stream is approximately 6.5 km² long, covering the Cohab, Castanheira, Caladinho, and Aeroclube neighborhoods. The data collection was conducted in plots located in isolated tree stretches, app

APA, Harvard, Vancouver, ISO, and other styles

12

Zhu, Jianxiao, Chuankuan Wang, Zhang Zhou, et al. "Increasing soil carbon stocks in eight permanent forest plots in China." Biogeosciences 17, no. 3 (2020): 715–26. http://dx.doi.org/10.5194/bg-17-715-2020.

Full text

Abstract:

Abstract. Forest soils represent a major stock of organic carbon (C) in the terrestrial biosphere, but the dynamics of soil organic C (SOC) stock are poorly quantified, largely due to lack of direct field measurements. In this study, we investigated the 20-year changes in SOC stocks in eight permanent forest plots, which represent boreal (1998–2014), temperate (1992–2012), subtropical (1987–2008), and tropical forest biomes (1992–2012) across China. SOC contents increased significantly from the 1990s to the 2010s, mostly in the upper 0–20 cm soil depth, and soil bulk densities do not change si

APA, Harvard, Vancouver, ISO, and other styles

13

Petráš, R., and J. Mecko. "Stability of the development of basic stand parameters of beech yield tables constructed on the basis of short-term observations on research plots." Journal of Forest Science 56, No. 7 (2010): 323–32. http://dx.doi.org/10.17221/83/2009-jfs.

Full text

Abstract:

We compared the development of yield curves of mean and top height and development of mean diameter according to yield tables of beech which were constructed on the basis of short-term investigations with empirical data of repeated measurements on permanent research plots. We performed our study on 86 permanent research plots with 550 repeated measurements. The length of the interval of repeated measurements on the research plots is in the range of 10&ndash;43 years. We quantified differences in the development of model and empirical curves by help of basic statistical characteristics. The

APA, Harvard, Vancouver, ISO, and other styles

14

DAS, T. K., K. K. BANDYOPADHYAY, RANJAN BHATTACHARYYA, et al. "Effects of conservation agriculture on crop productivity and water-use efficiency under an irrigated pigeonpea–wheat cropping system in the western Indo-Gangetic Plains." Journal of Agricultural Science 154, no. 8 (2016): 1327–42. http://dx.doi.org/10.1017/s0021859615001264.

Full text

Abstract:

SUMMARYIn search of a suitable resource conservation technology under pigeonpea (Cajanus cajanL.)–wheat (Triticum aestivumL.) system in the Indo-Gangetic Plains, the effects of conservation agriculture (CA) on crop productivity and water-use efficiency (WUE) were evaluated during a 3-year study. The treatments were: conventional tillage (CT), zero tillage (ZT) with planting on permanent narrow beds (PNB), PNB with residue (PNB + R), ZT with planting on permanent broad beds (PBB) and PBB + R. The PBB + R plots had higher pigeonpea grain yield than the CT plots in all 3 years. However, wheat gra

APA, Harvard, Vancouver, ISO, and other styles

15

Tekle, Kebrom. "Natural regeneration of degraded hillslopes in Southern Wello, Ethiopia: a study based on permanent plots." Applied Geography 21, no. 3 (2001): 275–300. http://dx.doi.org/10.1016/s0143-6228(01)00006-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Tan, C. S., and R. E. C. Layne. "Irrigation and ground cover management effect on soil temperature in a mature peach orchard." Canadian Journal of Plant Science 73, no. 3 (1993): 857–70. http://dx.doi.org/10.4141/cjps93-112.

Full text

Abstract:

The purpose of this study was to assess the effect of two irrigation (trickle vs. no irrigation) and two ground cover treatments (temporary cover vs. permanent sod) on soil temperature in a mature peach [Prunus persica (L.) Batsch] orchard on Fox sand. The soil temperatures at the surface, 5, 10 and 20 cm depths were monitored continuously all-year during 1987 and 1988. Irrigation reduced the fluctuations in soil temperature during summer and winter. The average daily soil temperature in nonirrigated plots during the summer was as high as 34 °C at the soil surface and 28 °C at the 20-cm depth,

APA, Harvard, Vancouver, ISO, and other styles

17

Herranz, J. M., J. J. Martinez-Sanchez, J. De Las Heras, and P. Ferrandis. "STAGES OF PLANT SUCCESSION IN FAGUS SYLVATICA L. AND PINUS SYLVESTRIS L. FORESTS OF TEJERA NEGRA NATURAL PARK (CENTRAL SPAIN), THREE YEARS AFTER FIRE." Israel Journal of Plant Sciences 44, no. 4 (1996): 347–58. http://dx.doi.org/10.1080/07929978.1996.10676656.

Full text

Abstract:

In August 1991 a fire in Tejera Negra Natural Park (Guadalajara Province, Central Spain) burned 300 ha. A study of the stages of succession inFagus sylvaticaL. andPinns sylvestrisL. forests was carried out during the first 3 years after the fire (1992–1994) in order to evaluate the dynamics of floristic richness, vegetation cover, diversity, plant density, and fugacity of the colonizing species by sampling of 10 permanent plots. Two years after the fire, vegetation cover in the burnt plots was similar to that of unburnt plots. However, floristic richness, diversity, and fugacity values were si

APA, Harvard, Vancouver, ISO, and other styles

18

Dubenok, N. N., and A. V. Lebedev. "Dynamics of stand indicators of pine plantations according to the data of long-term observations." Rossiiskaia selskokhoziaistvennaia nauka, no. 4 (August 15, 2023): 48–51. http://dx.doi.org/10.31857/s2500262723040099.

Full text

Abstract:

The purpose of the study is to study the dynamics of stand indicators (average height and diameter, the basal areas and stock) of pine forest plantations of different initial density over a 120-year period based on long-term observations on permanent sample plots. The object of the study was pine plantations on permanent trial plots of the Forest Experimental Station (Moscow). Course of Growth tables are among the simplest models that reflect the change in stand indicators of a collection of forest stands. A comparison of the growth and yield of forest stands on permanent test plots was carrie

APA, Harvard, Vancouver, ISO, and other styles

19

Salk, Carl F., Robin L. Chazdon, and Krister P. Andersson. "Detecting landscape-level changes in tree biomass and biodiversity: methodological constraints and challenges of plot-based approaches." Canadian Journal of Forest Research 43, no. 9 (2013): 799–808. http://dx.doi.org/10.1139/cjfr-2013-0048.

Full text

Abstract:

Understanding how human-impacted landscapes are changing is crucial for effective adaptive management and payment for ecosystem services programs. Landscape-level shifts in land use pose challenges not seen in typical ecological studies of well-protected forests. In human-modified landscapes, forests are often monitored using unique sets of randomized plots at each visit rather than re-censusing in the same permanent plots. We contrast field-based forest change monitoring using these two techniques and investigate whether sampling more plots or bigger plots better detects forest changes. Our e

APA, Harvard, Vancouver, ISO, and other styles

20

Lebedev, Aleksandr V., Aleksandr V. Gemonov, Sergey N. Volkov, et al. "Features of natural renewal in pine-linden and larch-linden forest stands in Moscow." RUDN Journal of Agronomy and Animal Industries 18, no. 3 (2023): 373–84. http://dx.doi.org/10.22363/2312-797x-2023-18-3-373-384.

Full text

Abstract:

Problems of natural renewal of tree species (pine-linden and larch-linden stands) were studied in the territory of Forest experimental station, Moscow Timiryazev Agricultural Academy. Natural regeneration of tree species is one of the most urgent problems of forestry and forest park management in urban areas. Reforestation refers to complex natural processes that affect all components of biogeocenoses. The purpose of the research was to study natural regeneration in mixed stands in Moscow. Methods and results of field surveys of forest stands in permanent trial plots were described. The forest

APA, Harvard, Vancouver, ISO, and other styles

21

Oksari, Ade Ayu, Irvan Fadli Wanda, Erizal Mukhtar, and Chairul Chairul. "The Diversity and Diameter Growth Rate of Sprouting-Type Tree in Bukit Pinang-Pinang Forest Permanent Plots." Jurnal Biodjati 4, no. 2 (2019): 184–93. http://dx.doi.org/10.15575/biodjati.v4i2.4728.

Full text

Abstract:

The process of forest regeneration can take place within a certain period of time. Sprouting is a form of strategy for in adapting to its environment for success in regenerating. The Research on the diversity and diameter growth rate of sprouting-type tree in Bukit Pinang-pinang forest permanent plots, West Sumatra was carried out from October 2012 to December 2016 in the forest of Bukit Pinang-Pinang, West Sumatra and Herbarium Department of Biology, Universitas Andalas, Padang. This research was conducted using a survey method by census. The parameters analyzed were plant species composition

APA, Harvard, Vancouver, ISO, and other styles

22

Dubenok, N. N., A. V. Lebedev, and S. A. Chistyakov. "Age changes of birch stands on the permanent sample plots of the Kologrivsky Forest Nature Reserve." Timiryazev Biological Journal, no. 1 (June 13, 2024): 6–21. http://dx.doi.org/10.26897/2949-4710-2024-2-1-6-21.

Full text

Abstract:

The actual patterns of forest stand dynamics can be revealed only if observational data on permanent sample plots are available. The aim of the study is to identify the characteristics of the age changes of stand indicators in permanent birch sampleplots of the Kologrivsky Forest Nature Reserve (Kostroma Region). The object of the study was forest stands in birch stands located in the core of the Kologrivsky Forest Nature Reserve. At present they are represented by mature and over-mature birch stands with the predominance of spruce undergrowth in narrow clearings of 1928 with a width of 100‑15

APA, Harvard, Vancouver, ISO, and other styles

23

Alex, S. Olpenda, and M. Tulod Adrian. "Establishment and diversity assessment of permanent monitoring plots in both natural and plantation forests in Southern Philippines." Journal of Biodiversity and Environmental Sciences (JBES) 15, no. 01 (2019): 22–29. https://doi.org/10.5281/zenodo.3758542.

Full text

Abstract:

This study was conducted as an initial endeavor in understanding long-term dynamics and responses of both natural and plantation forests to changes in climate in terms of species diversity, composition and abundance. The grid-based database was made for each type of forest to be used for monitoring and analysis. A total of 111 species with 88 genera under 42 families out of 4,569 individuals were gathered from the two plots. A significant difference (p <0.05) was observed between the two collections with only less than 10% common species. Findings showed that the species diversity in both t

APA, Harvard, Vancouver, ISO, and other styles

24

Lang, Mait, Tauri Arumäe, Diana Laarmann, and Andres Kiviste. "Estimation of change in forest height growth." Forestry Studies 67, no. 1 (2017): 5–16. http://dx.doi.org/10.1515/fsmu-2017-0009.

Full text

Abstract:

AbstractForest height increment rate is related to the forest growth conditions. Data bases of previous forest inventories contain information about forest heightage relationship on large number of forest stands while repeated measurements of permanent sample plots provide an excellent reference for comparison. Repeated airborne laser scanning of forest stands is an additional source for the estimation of change in forest structure. In this study, height growth of middle-aged and older forest stands for about 10 year period was compared to an algebraic difference model on permanent sample plot

APA, Harvard, Vancouver, ISO, and other styles

25

Wykoff, William R. "A Basal Area Increment Model for Individual Conifers in the Northern Rocky Mountains." Forest Science 36, no. 4 (1990): 1077–104. http://dx.doi.org/10.1093/forestscience/36.4.1077.

Full text

Abstract:

Abstract A basal area increment model is developed and evaluated for individual trees of 11 conifer species. This distance-independent model is applicable over much of the northern Rockies, an extensive region where stands have considerable variation in species composition, age structure, and past management. The model represents the diverse ecological requirements of the various species and responds appropriately across the observed range of predictor variables. Furthermore, it is well behaved even when used for conditions found in the region but not represented in the large calibration data

APA, Harvard, Vancouver, ISO, and other styles

26

Krupová, Danica, Michal Bošeľa, Pavel Pavlenda, and Slávka Tóthová. "Long-term changes in atmospheric depositions in Slovakia." Central European Forestry Journal 63, no. 1 (2017): 42–47. http://dx.doi.org/10.1515/forj-2017-0005.

Full text

Abstract:

Abstract The aim of this paper was to analyse temporal changes in chemism of atmospheric deposition in Slovakia. Two kinds of deposition, bulk and throughfall were considered and analysed for the period of 1996-2010. Data acquired from permanent monitoring plots (PMP) of Level II were used for this purpose. These plots were established as a part of the ICP Forests Programme. The changes in the composition of deposition were identified for the spruce and beech plots. The results were compared among three spruce plots, two beech plots and one mixed spruce-beech-fir plot. Precipitation pH was hig

APA, Harvard, Vancouver, ISO, and other styles

27

Peereman, Jonathan, James Aaron Hogan, and Teng-Chiu Lin. "Landscape Representation by a Permanent Forest Plot and Alternative Plot Designs in a Typhoon Hotspot, Fushan, Taiwan." Remote Sensing 12, no. 4 (2020): 660. http://dx.doi.org/10.3390/rs12040660.

Full text

Abstract:

Permanent forest dynamics plots have provided valuable insights into many aspects of forest ecology. The evaluation of their representativeness within the landscape is necessary to understanding the limitations of findings from permanent plots at larger spatial scales. Studies on the representativeness of forest plots with respect to landscape heterogeneity and disturbance effect have already been carried out, but knowledge of how multiple disturbances affect plot representativeness is lacking—particularly in sites where several disturbances can occur between forest plot censuses. This study e

APA, Harvard, Vancouver, ISO, and other styles

28

Boya, Saritha, Poorvashree Puttaswamy, Nethravathi Mahadevappa, Balasubramanya Sharma, and Remadevi Othumbamkat. "Enumerating Indigenous Arbuscular Mycorrhizal Fungi (AMF) Associated with Three Permanent Preservation Plots of Tropical Forests in Bangalore, Karnataka, India." Bacteria 2, no. 1 (2023): 70–80. http://dx.doi.org/10.3390/bacteria2010006.

Full text

Abstract:

The establishment of Permanent Preservation Plots (PPPs) in natural forests has a signifi-cant role in assessing the impact of climate change on forests. To pursue long-term studies on cli-mate change, PPPs were established during the year 2016 in two major forest areas in Bangalore to conduct ecological studies to monitor the vegetation changes. One of the objectives of the study was to understand the drivers of diversity, such as soils, in terms of nutrients and physical and biological properties. The native tropical forest of Bangalore, which houses Bannerghatta National Park (BNP) on the o

APA, Harvard, Vancouver, ISO, and other styles

29

Suliman, Tammam, Uta Berger, Marieke Van der Maaten-Theunissen, Ernst Van der Maaten, and Wael Ali. "Modeling dominant height growth using permanent plot data for Pinus brutia stands in the Eastern Mediterranean region." Forest Systems 30, no. 1 (2021): eSC03. http://dx.doi.org/10.5424/fs/2021301-17687.

Full text

Abstract:

Aim of the study: At current, forest management in the Eastern Mediterranean region is largely based on experience rather than on management plans. To support the development of such plans, this study develops and compares site index equations for pure even-aged Pinus brutia stands in Syria using base-age invariant techniques that realistically describe dominant height growth.Materials and methods: Data on top height and stand age were obtained in 2008 and 2016 from 80 permanent plots capturing the whole range of variation in site conditions, stand age and stand density. Both the Algebraic Dif

APA, Harvard, Vancouver, ISO, and other styles

30

Bujakiewicz, Anna. "Macrofungi of the Querco-Ulmetum minoris association in the Ostrów Panieński reserve on the Vistula river (N Poland)." Acta Mycologica 36, no. 1 (2014): 111–25. http://dx.doi.org/10.5586/am.2001.008.

Full text

Abstract:

Results of a three-year mycocoenological study performed on two permanent plots in floodplain forests near Chełmno on the Vistula river are presented. The 101 species of macrofungi collected in the area are discussed in relation to various substrates and habitats in which they occur.

APA, Harvard, Vancouver, ISO, and other styles

31

Abd Rahim, Ismail, and Mohamad Saiful Nizam Mohamad. "TUNNEL SUPPORT BY ROCK QUALITY INDEX (Q) SYSTEM FOR ULTRABASIC ROCK: A CASE STUDY IN TELUPID, SABAH, MALAYSIA." Malaysian Journal of Geosciences 4, no. 1 (2020): 22–25. http://dx.doi.org/10.26480/mjg.01.2020.22.25.

Full text

Abstract:

The study area is underlain by the ultrabasic rock of partly Sabah Ophiolite Complex of Cretaceous ages. The objectives of this study are to determine the Q-value and to estimate the permanent support measures for 20m span, 10m high and eastern direction of the proposed tunnel in the study area. Engineering geological mapping (lithological and surface mapping and discontinuity survey), laboratory study (petrographical study) and testing (Uniaxial Compressive Strength testing) and data analysis (stereographic plots, Q system parameters evaluation and support estimation) was used in this study.

APA, Harvard, Vancouver, ISO, and other styles

32

McNab, W. H., and B. A. Ritter. "The Old Orchard White Pine Plantation at Biltmore." Journal of Forestry 98, no. 11 (2000): 18–23. http://dx.doi.org/10.1093/jof/98.11.18.

Full text

Abstract:

Abstract A pioneering case study in the Old Orchard Plantation on Biltmore Estate near Asheville, North Carolina, considered current yields and the effects of periodic thinning on height and basal area growth, as well as cubic volume and board-foot yields. Established in 1899, one of three plots of this eastern white pine stand was first thinned in 1916. Beyond providing growth-and-yield data, the Old Orchard Plantation demonstrates the value of maintaining permanent forest research plots for long-term ecological and silvicultural studies.

APA, Harvard, Vancouver, ISO, and other styles

33

Hébert, Rémi. "Méthodologie pour l'analyse des données forestières historiques : le cas de la forêt expérimentale du Lac Édouard, Québec." Forestry Chronicle 80, no. 4 (2004): 469–72. http://dx.doi.org/10.5558/tfc80469-4.

Full text

Abstract:

Permanent sampling plots in experimental forests have generated large quantities of data over the past decades. Methods used to collect certain of these data have often varied over the course of the sampling. The objective of this study was to develop a process to evaluate sampling differences in historical forest data. The proposed approach is to: (1) examine available data and seek out the missing ones in archives of the concerned organizations; (2) regroup data by inventory periods; (3) search for the sampling methodology in each of the different inventory periods; and (4) evaluate the impa

APA, Harvard, Vancouver, ISO, and other styles

34

González-Maya, José F., and Juan Mata-Lorenzen. "Dung-beetles (Coleoptera: Scarabeidae) from the Zona Protectora Las Tablas, Talamanca, Costa Rica." Check List 4, no. 4 (2008): 458. http://dx.doi.org/10.15560/4.4.458.

Full text

Abstract:

Dung-beetle species are considered an important focal indicator group in tropical forests. During 2007, eighteen traps were set in two permanent biodiversity plots during one week surveys in Las Tablas Protected Zone within La Amistad Biosphere Reserve. The main purpose of this study was to determine the group composition and diversity as the basis for permanent monitoring and to measure potential impacts of land use change and climate change on mountain diversity. Pitfall traps were placed randomly within the plots with human feces as bait. A total of 26 species distributed in 13 genera and s

APA, Harvard, Vancouver, ISO, and other styles

35

González-Maya, José, and Juan Mata-Lorenzen. "Dung-beetles (Coleoptera: Scarabeidae) from the Zona Protectora Las Tablas, Talamanca, Costa Rica." Check List 4, no. (4) (2008): 458–63. https://doi.org/10.15560/4.4.458.

Full text

Abstract:

Dung-beetle species are considered an important focal indicator group in tropical forests. During 2007, eighteen traps were set in two permanent biodiversity plots during one week surveys in Las Tablas Protected Zone within La Amistad Biosphere Reserve. The main purpose of this study was to determine the group composition and diversity as the basis for permanent monitoring and to measure potential impacts of land use change and climate change on mountain diversity. Pitfall traps were placed randomly within the plots with human feces as bait. A total of 26 species distributed in 13 genera and s

APA, Harvard, Vancouver, ISO, and other styles

36

Kermavnar, Janez, and Lado Kutnar. "Habitat Degradation Facilitates the Invasion of Neophytes: A Resurvey Study Based on Permanent Vegetation Plots in Oak Forests in Slovenia (Europe)." Plants 13, no. 7 (2024): 962. http://dx.doi.org/10.3390/plants13070962.

Full text

Abstract:

The spread of neophytes (non-native plant species) challenges the conservation status and ecological integrity of forests, especially in lowland areas. Long-term resurvey studies are needed to evaluate the temporal dynamics of neophytes in forests; however, such data are scarce. In 2023, we resampled a set of 45 permanent vegetation plots (established in 1992/93) in two forest vegetation types: oak–hornbeam forests dominated by Quercus robur and colline oak–beech forests dominated by Q. petraea. Over the last 30 years, oak forests have experienced extensive oak tree mortality, with the degree

APA, Harvard, Vancouver, ISO, and other styles

37

Yavitt, Joseph B., and S. Joseph Wright. "Charge characteristics of soil in a lowland tropical moist forest in Panama in response to dry-season irrigation." Soil Research 40, no. 2 (2002): 269. http://dx.doi.org/10.1071/sr00061.

Full text

Abstract:

Although the hot, moist tropics in the Republic of Panama receive more than 2000 mm of rain per year, soils dry considerably during the 4-month dry season. We examined the effect of seasonal drought by irrigating two 2.25-ha plots of lowland tropical moist forest on Barro Colorado Island (BCI) for 5 consecutive dry seasons. Irrigation decreased soil permeability and improved soil nutrient status, which prompted this study of soil charge characteristics in the irrigated and control plots. Soil was an Alfisol, and thus it was not clear a prioriwhether variable-charge or permanent-charge componen

APA, Harvard, Vancouver, ISO, and other styles

38

Kellner, Olle. "Effects of nitrogen addition on the population dynamics and flowering of Pulsatilla vernalis." Canadian Journal of Botany 71, no. 5 (1993): 732–36. http://dx.doi.org/10.1139/b93-085.

Full text

Abstract:

A population of Pulsatilla vernalis (L.) Mill, was studied in permanent plots for 8 years. Half the plots were fertilized with ammonium nitrate (15 g N/m2) at the start of the study. Mortality and natality in the ramet population were very low in both fertilized and control treatments. In contrast, there was a considerable between-year turnover of shoots within ramets in both treatments. The number of shoots increased threefold after fertilization and then gradually decreased to the original level. Flower-bud formation in unfertilized plots was lower in warm and dry years than in cooler, wette

APA, Harvard, Vancouver, ISO, and other styles

39

Krisnawati, Haruni, Djoko Wahjono, and Rinaldi Imanuddin. "CHANGES IN THE SPECIES COMPOSITION, STAND STRUCTURE AND ABOVEGROUND BIOMASS OF A LOWLAND DIPTEROCARP FOREST IN SAMBOJA, EAST KALIMANTAN." JOURNAL OF FORESTRY RESEARCH 8, no. 1 (2011): 1–16. https://doi.org/10.20886/ijfr.2011.8.1.1-16.

Full text

Abstract:

The dynamics of species composition, stand structure and aboveground biomass were studied over a 4.3-yr period (December 2004 – April 2009) in a lowland dipterocarp forest of Samboja, East Kalimantan. This study was conducted in six permanent sample plots (100 m x 100 m each) distributed over an area of 26.5 ha of Samboja Research Forest. All woody plants = 10 cm dbh (diameter at 1.3 m aboveground) were identified. In December 2004, 2.143 trees were measured in the six plots, consisting of 39 families, 82 genera and 111 species. The condition in April 2009 (after 4.3 yr) was: 2,466 trees

APA, Harvard, Vancouver, ISO, and other styles

40

Susilowati, Arida, Henti Hendalastuti Rachmat, Afifatul Achyar, et al. "Establishing permanent monitoring plots of narrow endemic and threatened plants of Indonesia: a case study on Dipterocarpus cinereus Slooten (Dipterocarpaceae)." Nature Conservation 56 (September 12, 2024): 101–13. http://dx.doi.org/10.3897/natureconservation.56.125822.

Full text

Abstract:

Permanent plots are commonly employed to record and monitor temporal changes in plant communities. In this study, we established a permanent plot to monitor the future population dynamics and regeneration of Dipterocarpus cinereus Slooten (Dipterocarpaceae), or Lagan bras, a critically endangered and narrowly endemic tree confined to the Mursala Island in Sumatera Utara Province, Indonesia. Using a quarter-hectare (50 × 50 m2) plot, we collected initial data on the population structure of D. cinereus and the floristic composition of the tree community within the plot. Tree inventories were con

APA, Harvard, Vancouver, ISO, and other styles

41

Błoszyk, Jerzy, Agnieszka Napierała, Marta Kulczak, and Michał Zacharyasiewicz. "Changes in Forest Stand and Stability of Uropodine Mites Communities (Acari: Parasitiformes) in Jakubowo Nature Reserve in the Light of Long-Term Research." Forests 13, no. 8 (2022): 1219. http://dx.doi.org/10.3390/f13081219.

Full text

Abstract:

The current study has been conducted for over 40 years (between 1981 and 2022) in a natural forest reserve in Jakubowo (western Poland). The material for the analysis was collected in three permanent monitoring ground plots with different vegetation cover, humidity and degree of shade. The major aim of the study was to analyze the changes in the species composition and abundance in uropodine (Acari: Parasitiformes) mite communities that occurred in the three ground plots in Jakubowo over 40 years. The second goal was to assess the stability of the species composition and the number of Uropodin

APA, Harvard, Vancouver, ISO, and other styles

42

Gallo, Josef, Lukáš Bílek, Václav Šimůnek, Sonia Roig, and José Alfredo Bravo Fernández. "Uneven-aged silviculture of Scots pine in Bohemia and Central Spain: comparison study of stand reaction to transition and long-term selection management." Journal of Forest Science 66, No. 1 (2020): 22–35. http://dx.doi.org/10.17221/147/2019-jfs.

Full text

Abstract:

The achievement of sustainable forest management requires the incorporation of ongoing environmental changes into long-term planning. Moreover, in time of climatic change and changing company demands, importance of Scots pine (Pinus sylvestris L.) is still increasing at the expense of other tree species due to its low ecological requirements. The aim of the study was to compare the structure and production of Scots pine stands managed under different silvicultural systems on four research plots, assess the structural and diversity indices, and analyse the increment structure using tree-ring da

APA, Harvard, Vancouver, ISO, and other styles

43

Singh, Sanjay, Harish Bahadur Chand, Pavan Kumar Khatri, et al. "Phytosociology and Regeneration Status in Different Permanent Preservation Plots across Different Forest Types in Madhya Pradesh, Central India." Grassroots Journal of Natural Resources 4, no. 2 (2021): 179–98. http://dx.doi.org/10.33002/nr2581.6853.040213.

Full text

Abstract:

Tropical forests are a global biodiversity centre providing enormous ecosystem services to the humankind. The present study was undertaken to examine and analyze the phytosociology and regeneration status of tree species in 39 permanent preservation plots spread across 22 different forest sub-types in Madhya Pradesh, India. A total of 975 quadrats were laid with a sampling intensity of 2.42% of the total area under study. 109 tree species were recorded. Density range varied from 516 individuals/hectare (ind/ha) in southern tropical dry deciduous forests to 3,412 ind/ha in dry grassland forests

APA, Harvard, Vancouver, ISO, and other styles

44

Sanjay, Singh, Bahadur Chand Harish, Kumar Khatri Pavan, et al. "Phytosociology and Regeneration Status in Different Permanent Preservation Plots across Different Forest Types in Madhya Pradesh, Central India." Grassroots Journal of Natural Resources 4, no. 2 (2021): 179–98. https://doi.org/10.33002/nr2581.6853.040213.

Full text

Abstract:

Tropical forests are a global biodiversity centre providing enormous ecosystem services to the humankind. The present study was undertaken to examine and analyze the phytosociology and regeneration status of tree species in 39 permanent preservation plots spread across 22 different forest sub-types in Madhya Pradesh, India. A total of 975 quadrats were laid with a sampling intensity of 2.42% of the total area under study. 109 tree species were recorded. Density range varied from 516 individuals/hectare (ind/ha) in southern tropical dry deciduous forests to 3,412 ind/ha in dry grassland fo

APA, Harvard, Vancouver, ISO, and other styles

45

Susilowati, Arida, Henti Hendalastuti Rachmat, Afifatul Achyar, et al. "Establishing permanent monitoring plots of narrow endemic and threatened plants of Indonesia: a case study on Dipterocarpus cinereus Slooten (Dipterocarpaceae)." Nature Conservation 56 (September 12, 2024): 101–13. https://doi.org/10.3897/natureconservation.56.125822.

Full text

Abstract:

Permanent plots are commonly employed to record and monitor temporal changes in plant communities. In this study, we established a permanent plot to monitor the future population dynamics and regeneration of <i>Dipterocarpus cinereus</i> Slooten (Dipterocarpaceae), or Lagan bras, a critically endangered and narrowly endemic tree confined to the Mursala Island in Sumatera Utara Province, Indonesia. Using a quarter-hectare (50 × 50 m2) plot, we collected initial data on the population structure of <i>D. cinereus</i> and the floristic composition of the tree community within the plot. Tree invent

APA, Harvard, Vancouver, ISO, and other styles

46

Steinbauer, Klaus, Andrea Lamprecht, Philipp Semenchuk, Manuela Winkler, and Harald Pauli. "Dieback and expansions: species-specific responses during 20 years of amplified warming in the high Alps." Alpine Botany 130, no. 1 (2019): 1–11. http://dx.doi.org/10.1007/s00035-019-00230-6.

Full text

Abstract:

AbstractThe largest alpine–nival vegetation permanent plot site in the Alps, the GLORIA mastersite Schrankogel (Tirol, Austria), provided evidence of warming-driven vegetation changes already 10 years after its establishment in 1994. Another decade later, in 2014, substantial compositional changes with increasing ratios of warmth-demanding to cold-adapted species have been found. The current study deals with species-specific responses involved in an ongoing vegetation transformation across the alpine–nival ecotone on Schrankogel by using presence/absence as well as cover data from permanent pl

APA, Harvard, Vancouver, ISO, and other styles

47

Marquis, F., and D. Paré. "The role of permanent site factors in the assessment of soil treatment effects: A case study with a site preparation trial in jack pine plantations on glacial outwashes." Canadian Journal of Soil Science 89, no. 1 (2009): 81–91. http://dx.doi.org/10.4141/cjss06044.

Full text

Abstract:

In silvicultural trials, the confounding influence of permanent soil properties is assumed to be minimal. A covariance analysis using total elemental concentrations of parent material (geochemistry) and soil particle size distribution (texture) was used to understand the role that these variables could play in tree growth and foliar nutrient status, and in the growth response to site preparation of 16- to18-yr-old jack pine plantations growing on seemingly homogeneous glacial outwash deposits. Three treatments were tested in a replicated design: direct plantation, and site preparation with TTS

APA, Harvard, Vancouver, ISO, and other styles

48

Hynynen, Jari, and Risto Ojansuu. "Impact of plot size on individual-tree competition measures for growth and yield simulators." Canadian Journal of Forest Research 33, no. 3 (2003): 455–65. http://dx.doi.org/10.1139/x02-173.

Full text

Abstract:

The study addresses the effect of sample plot size on the bias related to measured stand density. We analyzed the effect of plot size on model coefficients and model performance in the simulation. Alternative growth models were developed for Norway spruce (Picea abies (L.) Karst.) on the basis of data obtained from permanent inventory sample plots of varying size. The competition measures were estimated from small plots with an average radius of 6 m, large plots with an average radius of 10 m, a cluster of three small plots within a stand, and a cluster of three large plots within a stand. The

APA, Harvard, Vancouver, ISO, and other styles

49

Házi, Judit, Dragica Purger, Károly Penksza, and Sándor Bartha. "Interaction of Management and Spontaneous Succession Suppresses the Impact of Harmful Native Dominant Species in a 20-Year-Long Experiment." Land 12, no. 1 (2023): 149. http://dx.doi.org/10.3390/land12010149.

Full text

Abstract:

Our study focused on the compositional changes of Pannonian semi-natural dry grasslands. The preservation of these valuable habitats requires regular management. Our mowing experiment aimed to study the suppression of the native dominant Calamagrostis epigejos L. Roth in mid-successional grasslands. Mowing was applied twice a year in eight permanent plots. The vegetation was sampled annually from 2001 to 2021. The impacts of mowing were tested using repeated–measures analysis of variance (ANOVA). After 10 years, the cover of C. epigejos in the mown plots decreased significantly, from an initia

APA, Harvard, Vancouver, ISO, and other styles

50

Lozada, José R., Ernesto Arends, Domingo Sánchez, et al. "Recovery after 25 years of the tree and palms species diversity on a selectively logged forest in a Venezuelan lowland ecosystem." Forest Systems 25, no. 3 (2016): e066. http://dx.doi.org/10.5424/fs/2016253-08178.

Full text

Abstract:

Aim of study: We evaluate palm and tree species diversity in a floodplain forest and the changes affecting the plots subjected to different intensities of selective logging.Area of study: The western alluvial plains of Venezuela.Materials and Methods: A randomized complete blocks design was established 25 years ago with three felling treatments (trees with diameter greater than 20 cm, 40 cm and 60 cm). Each treatment had three replications, using 1 ha permanent plots. We have measured all trees and palms bigger than over 10 cm in diameter. The data set was used to calculate the Importance Valu

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!