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Wyszukujesz frazę "Brach, M" wg kryterium: Autor

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    Tytuł:
    Analiza dokładności wyznaczania współrzędnych wybranymi odbiornikami GNSS w środowisku leśnym
    Accuracy analysis for determination of coordinates by the selected GNSS receivers in the forest environment
    Autorzy:
    Brach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/995919.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    geodezja lesna
    nawigacja satelitarna
    system ASG-EUPOS
    odbiornik GNSS
    dokladnosc pomiaru
    forest geodesy
    satellite navigation
    gnss
    asg−eupos
    dgps
    Opis:
    Forest digital maps have practical application provided, inter alia, their continuous updating by employing reliable measurement methods. Satellite navigation technology is an excellent source of geometric data. The paper presents an analysis of the positioning accuracy for five navigation receivers of different classes used to measure X, Y, Z coordinates in the forest environment. The measurements were conducted using a network of reference stations ASG−EUPOS. The error analysis was based on the precisely measured geodetic control network.
    Źródło:
    Sylwan; 2012, 156, 01; 47-56
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiar położenia środka drzewa z wykorzystaniem tachimetru elektronicznego
    Use of total station surveying to determine the location of tree centre
    Autorzy:
    Brach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1011909.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany
    polozenie srodka drzewa
    tachimetry elektroniczne
    inwentaryzacja przyrodnicza
    lesnictwo
    pomiary
    drzewa lesne
    total stations
    surveying
    environment of wooded areas
    Opis:
    An environment of wooded areas creates specific conditions for high−accuracy surveying. We can implement such measurements in forests, wooded areas or historical parks. The main goal of this paper is to find an optimal combination of surveying equipment and surveying methods in order to achieve the best results. Therefore the precision of total station measurements was analised in order to determine the best tree location.
    Źródło:
    Sylwan; 2009, 153, 04; 231-239
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena możliwości wykorzystania modelu HSI do analizy rozprzestrzeniania się pożaru lasu
    Suitability of the HSI model for the analysis of the forest fire spread
    Autorzy:
    Brach, M.
    Kaczmarowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/990875.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pozary lasow
    rozprzestrzenianie sie pozaru
    System Informacji Geograficznej
    wykorzystanie
    indeks HSI
    fire
    forest
    hsi index
    gis
    laser scanning
    fire spread
    Opis:
    An attempt was made to determine fire selectivity for different vegetation classes and habitat conditions using the HSI (Habitat Suitability Index) model. This is an example of expert model based on theoretical knowledge and experience of researchers. HSI analyses were originally designed to study animal habitat preferences. The assessment of inherent differences in the flammability of the selected fragments of forest stands was carried out on the basis of the derivative vector layers and raster images. The obtained results show fuel characteristics of the forest environment and the theoretical paths of fire spread preferences.
    Źródło:
    Sylwan; 2014, 158, 10; 769-778
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sezonowa zmienność rozkładu chmury punktów skanowania laserowego w drzewostanach iglastych i jej związek z cechami taksacyjnymi drzewostanu
    Seasonal variability of distribution of laser scanning point cloud in coniferous stands and its relationship with stand valuation characteristics
    Autorzy:
    Będkowski, K.
    Brach, M.
    Banaszczak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/973707.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    skanowanie laserowe
    lidar
    drzewostany iglaste
    cechy taksacyjne
    pomiary terenowe
    zwarcie drzewostanu
    leśnictwo
    rozkład punktów odbić impulsów laserowych
    zmienność sezonowa
    wysokość drzew
    wysokość miejsca zwarcia
    wysokość osadzenia korony
    pierśnice drzew
    point cloud
    accuracy
    forestry
    LIDAR
    DTM
    Opis:
    Increasing knowledge of the spatial structure of forests can contribute to the improvement of stand stability and silviculture rules. New opportunities in this respect are offered by the laser scanning technique, which allows to determine different stand characteristics and anticipate their spatial structure. It was found that certain features of laser pulse distribution histograms do not change significantly during the growing season and show a strong correlation with the characteristics of the stands located in the Rogów Arboretum, Warsaw University of Life Sciences – SGGW.
    Źródło:
    Sylwan; 2011, 155, 11; 736-748
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zależność między pierśnicą a cechami koron uzyskanymi z lotniczego skanowania laserowego
    Relationship between dbh and crown characteristics derived by airborne laser scanner
    Autorzy:
    Zasada, M.
    Stereńczak, K.
    Brach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/973712.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    skanowanie laserowe
    lidar
    korony drzew
    pomiary
    powierzchnia rzutu korony
    piersnicowe pole przekroju
    leśnictwo
    drzewa leśne
    pierśnice drzew
    pierśnicowe pole przekroju
    airborne laser scanning
    dbh
    crown parameters
    Opis:
    The main goal of the study was the determination of the relationship between selected crown parameters derived from automatically processed airborne laser scanning (ALS) data and tree diameter. It has been found that the best set of features for that purpose is crown projection area (CPA) as a predictor and tree basal area (BA) as dependent variable. Two algorithms of crown segmentation (‘growing’ and ‘pouring’) have been analysed. Weibull, exponential and hyperbole functions have been the best for description of the relationship between CPA and BA. The relationship between tree diameter and crown characteristics was significant, but relatively weak. This can be attributed to the fact, that the relationship can be modified by various stand characteristics. Including such variables as tree stocking and crown closure should improve the model significantly.
    Źródło:
    Sylwan; 2011, 155, 11; 725-735
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dokładność pomiaru wybranymi dalmierzami laserowymi w środowisku leśnym
    Measurements accuracy of selected laser rangefinders in the forest environment
    Autorzy:
    Brach, M.
    Bielak, K.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/993397.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    geodezja lesna
    drzewostany
    pomiary
    dalmierze laserowe
    dalmierz ForestPro
    dalmierz TruPulse 360
    polozenie drzew
    ciagi busolowe
    dokladnosc pomiaru
    forest geodesy
    forest inventory
    laser rangefinder
    silvicultural planning
    Opis:
    Paper presents results of measurement accuracy evaluation of two laser rangefinders (TruPulse and ForestPro integrated with MapStar compass) mounted on monopod and tripod under the forest conditions. The precise data on spatial coordinates of 34 trees in the Rogów Arboretum and 8 points from the geodetic control network in the Głuchów Forest were used. The results show that the measurement sets equipped with ForestPro and MapStar were more accurate than TruPulse ones. However, no significant influence of applied stands on the measurement accuracy was observed.
    Źródło:
    Sylwan; 2013, 157, 09; 671-677
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dokładność szybkich metod inwentaryzacji leśnej mapy numerycznej
    Accuracy of fast inventory techniques used for digital forests map update
    Autorzy:
    Brach, M.
    Stanczak, L.
    Szymanski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/987124.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lesne mapy numeryczne
    aktualizacja
    urzadzenia nawigacyjne
    bezzalogowe statki powietrzne
    pomiary naziemne
    pomiary geodezyjne
    ortofotomapy
    dokladnosc pomiaru
    rpas
    uav
    orthophotomap
    forest
    gnss
    measurements
    digital forest map update
    Opis:
    The functioning of the forest digital maps and conducting complex silviculture implemented in accordance with the diversified development creates great demand for a quick method of spatial data capture. Currently used data collectors and navigation receivers enable the measurements of the forest, but the results are not reliable taking into account their quality. In this study the evaluation of currently used measuring devices were realized and new, reliable solution that can streamline data capture in the field was proposed. The work was carried out in the Pułtusk Forest District (central Poland). We established five plots in the stand with the alder as a dominant species. 137 reference points were captured using classical surveying methods. We used the following data collectors: Motorola Omnii XT15 and Workabout PRO, Samsung Galaxy Core Plus smartphone and GIS Trimble ProXH navigation receiver. In addition, the unmanned aircraft i.e. popular on the market DJI Phantom 4 was also used. The accuracy was assessed by determining the error of the plot area and the accuracy of control points (MP). It was found that current popular data collectors and smartphones define the plot area with an error of about 3%, the same positioning of the object can be accurate from 2 to 6 meters (tab. 1). The results allow to conclude that the use of smartphones may be important only for draft assessment, and the realization of the measurement using the data collectors should always be preceded by the control measurement on the charac− teristic points. Significantly better results are obtained by the GIS class receivers (MP less than 2 meters) and using differential correction (MP less than 0.6 meters). However, these devices are used rarely in practice, despite universal access to the network of GNSS reference stations. The use of drone allowed to obtain images for the entire area in 15 minutes. The orthophotomap was automatically made in point−cloud technology. This method gave an error of 1.3% for estimat− ing the plot area and 1.69 meters for the position of control points for objects borders. Given the falling prices of unmanned platforms and low labor intensity of this measurement method, we can assume that it will find widespread use in updating of forest digital maps.
    Źródło:
    Sylwan; 2017, 161, 01; 18-26
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ wysokości otaczającego drzewostanu, wystawy i pochylenia terenu na mikroklimat adiacyjny na gnieździe - wyniki modelowania
    Effect of surrounding stand height, terrain aspect and inclination on radiation microclimate on the gap - results of the modelling
    Autorzy:
    Bolibok, L.
    Brach, M.
    Szeligowski, H.
    Orzechowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989732.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    rebnie gniazdowe
    odnowienia lasu
    odnowienia na gniazdach
    gniazda
    warunki radiacyjne
    srednica gniazda
    wysokosc drzewostanu otaczajacego
    warunki swietlne
    nachylenie terenu
    ekspozycja terenu
    zmiany warunkow radiacyjnych
    modelowanie
    radiation
    aspect
    inclination
    gap size
    modelling
    Opis:
    Different kinds of solar radiation (direct, diffuse) shape microclimate of forest gaps and have significant influence on establishment and growth of young trees. Adjustment of the shape and size of artificial gaps could create favourable conditions that meet the demands of particular species. Unfortunately there is lack of publications concerning this topic, which could be used directly for silvicultural planning in Polish conditions. Empirical assessment of radiation regimes in a wide range of different shaped gaps is impossible from practical reasons, so modelling in ArcGis environment was used instead. Gaps of different shape and size were modelled as elliptical depression in terrain by the use digital elevation model. The Solar Radiation tool was used to model direct and global radiation on the bottom of the gaps with area varying between 2 and 50 are surrounded by stands of height between 15 to 35 meters. The outcome of modelling was presented in form of nomograms. Additional series of analyses was created to describe the influence of terrain aspect and inclination on solar radiations supplies on the forest floor in gaps. Presented nomograms could be helpful in silvicultural planning, because they could be used to design artificial gaps with expected solar radiations supplies.
    Źródło:
    Sylwan; 2015, 159, 10; 813-823
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nowa koncepcja określania działki ewidencyjnej dla gruntów w zarządzie PGL Lasy Państwowe
    New concept of registered parcel determination for areas in the property of the State Forests National Forest Holding
    Autorzy:
    Brach, M.
    Karaszkiewicz, W.
    Olenderek, H.
    Ostrowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989941.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    grunty lesne
    ewidencja gruntow
    dzialki ewidencyjne
    dzialki lesne
    compartment
    forest complex
    forest digital map accuracy
    land registry
    Opis:
    The registered parcel can be explained as continuous part of land within a subdistrict. It has to be also homogeneous legally and separated from other objects by the boundary lines. In the spatial structure of the State Forests National Forest Holding the registered parcel correspond to a forest compartment. The paper presents new approach to registered parcel definition, which can store more than one forest compartment (forest complex). In this way it is possible to create new basic area object as a base for cadastre (land registry) within the forest district. The aim of this study was to assess positioning accuracy of the boundary marker and the area of registered parcel. The measurements were conducted on stabilized boundary markers within forest complex and not−stabilized boundary markers within forest compartments. Using surveying technology the network of polygonal traverses were created. The control points for every travers line were measured by geodetic class GNSS receiver. It was assumed that all measured coordinates are free from error, so it was possible to asses registered parcel positioning errors. These errors are ±3.96 m for not−stabilized boundary markers and ±0.43 m for stabilized boundary markers. Applying the new idea, all existing forest compartments were joint into one big parcel within forest complex. The total number of parcels was reduced from 988 to 335. Based on formula [4] the area of parcels was calculated in two variants: considering their existing borders (not−stabilized boundary markers) and considering merged parcels (stabilized boundary markers). For the previous, the average error of parcel area equals to 1348 m² (26−6606, standard deviation=814 m²). In the latter variant, the average error of parcel area is much lower and equals 147 m² (5−3008, standard deviation=293 m²). The final results prove that new concept for basic area objects is justified and should be gradually implemented in the State Forests. This idea will not only facilitate forest management, but increase accuracy of borders positioning and simplify land registry as well.
    Źródło:
    Sylwan; 2015, 159, 11; 883-892
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prototyp stacji pogodowej dla potrzeb leśnictwa - badania pilotażowe
    Prototype of the weather station for the needs of forestry - a pilot study
    Autorzy:
    Szymański, P.
    Szymański, M.
    Śmieja, M.
    Brach, M.
    Ożga, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/989036.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    meteorologia
    lasy
    pomiary meteorologiczne
    stacja pogodowa
    prototypy
    badania pilotazowe
    arduino™
    stevenson screen
    sensors meteorological parameters
    forest
    Opis:
    The aim of the study was to design a weather station dedicated for applications in the forestry. The device is thought to be used to measure temperature, pressure, humidity and sunlight and to record that data to the microSD memory card supplementing also the information on the time of measurement. The objective of the field part of the study was to gather accurate meteorological data from the interior of the forest to the geostatistical analysis, necessary for breeding purposes. Here we present the assumptions for technical equipment and describe the components of the device, including the systems of sensor and control. In the further stage of the study we performed the comparative test of the prototype with a professional weather station. The results show a very strong correlation between data form both devices, while the average error relative is at a very satisfactory level: temperature (0.15°C), relative humidity (–3.73%), pressure (–3.37 hPa) and light intensity (–0.82 klx). The project proved that it is possible to construct simple and economically grounded weather station. The total cost of presented prototype does not exceed 500 PLN (ca. 110 US$). We suggest to continue further research and development of the network of similar weather stations. It may allow to create a model of meteorological factors for bigger areas.
    Źródło:
    Sylwan; 2017, 161, 05; 405-412
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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