Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "stocking" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-13 z 13
    Tytuł:
    Complex assessment of plant growing development in regions of Ukraine to work out recommendations for institutional changes in agriculture
    Autorzy:
    Shmygol, Nadia
    Powiązania:
    https://bibliotekanauki.pl/articles/692553.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Ekonomiczny w Poznaniu
    Tematy:
    agricultural sector
    estimation of plant growing
    intensive load (stocking) factor
    extensive load (stocking)factor
    crop capacity
    Opis:
    This article deals with the prospects and trends of crop production development in Ukraine, as well as the methods and ways of supporting this industry by the state.According to the article, the primary objective of the state is to create conditions through the reallocation of resources and facilitate the introduction of new forms of economic activity in the regions, which are depressed in terms of agriculture today.It is noted that to justify the need for institutional changes in crop production we must take into account the appropriate specifics of agricultural production in some areas.The article reports that, a large number of similar types of agricultural enterprises, unlike in other sectors of the economy, allow us to group the results of their activity: in terms of forms of management, on a territorial basis or according to other types of features for further comparative analysis.Therefore, the article offers the crop production regions clustering in certain areas, to determine which areas need the state aid priority.It is noted that in terms of crop production it is possible to increase the efficiency of agricultural activity due to a better use of agricultural land, as well as by an increase in average crop yield per 1 hectare. Therefore, it is offered to use the integral index of crop production position of each region, based on the ratios of extensive and intensive load.The extensive load factor represents the degree of agricultural land use.The intensive load factor reflects the effectiveness of land fund usage, that is, the average yield, which is produced from the agricultural land of the same region. However, the average yield cannot directly serve as the basis for calculation, because the structure of the sown area of each region is heterogeneous.In this study, while calculating the intensive load factor, it is offered primarily to carry out the procedure of yield rate normalization for each group of crops separately.Using the method of integral estimation of crop development, the autor has made an appropriate ranking of Ukraine regions according to the area of sown crops in Ukraine, based on which 4 sectors of Ukraine areas have been allocated and grouped by crop production development level.The article goes on to give the recommendations for decision making supporting investments and state aid for each of the selected sectors to further develop crop production in the regions of Ukraine.
    Źródło:
    Research Papers in Economics and Finance; 2016, 1, 1; 47-54
    2543-6430
    Pojawia się w:
    Research Papers in Economics and Finance
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka wiekowo-wzrostowa tarłowych migrantów łososi (Salmo salar L.) Wieprzy
    The age-growth characteristics of spawning atlantic salmon (Salmo salar L.) Migrants in Wieprza River
    Autorzy:
    Pilecka-Rapacz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819421.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    migracja łososi
    tarło
    zarybienie
    salmon migration
    spawning
    stocking
    Opis:
    Spośród wędrownych ryb łososiowatych Polski najliczniej w rzekach występowała i występuje troć wędrowna, natomiast łososie miały stosunkowo niewielki udział [1]. Występowały w Wiśle, Odrze (Drawie) oraz w małym procencie w rzekach pomorskich [2]. Jako ryba atrakcyjna biologicznie i gospodarczo był badany przed drugą wojną światową [3]. Dokładniejsze badania wzrostu i struktury wiekowej łososi prowadzone były w latach powojennych [1÷8]. Natomiast dyskusja dotycząca wzrostu obecnych łososi, występujących w naszych rzekach jest trochę skomplikowana. W latach 80. zanikły nasze ostatnie łososie [9]. Potem rozpoczęła się odbudowa populacji i obecnie opiera się ona na stadzie z rzeki Daugawy (Łotwa) [10]. Głównie na tej bazie oparta jest aktualna restytucja łososia w Polsce, którym zarybia się rzeki pomorskie i Wisłę z dobrymi wynikami restytucyjnymi [3, 11]. Dlatego wydawało się celowym, dokonanie analizy wiekowo-wzrostowej na podstawie oceny łusek ryb migrujących z morza do Wieprzy na tarło.
    Atlantic salmon is a biologically and economically attractive fish. A detailed study of salmons' growth and age structure were carried out in post-war years. In the 80s our last salmon disappeared, and in the 90s the reconstruction of the salmon population (restitution) has started. It was based on salmon from the Daugawy River (Latvia). Salmon from Wieprza River came from stocking conducted by staff of the Polish Angling Association. Therefore, it seemed advisable, to examine age and growth of fish based on scales from salmon migrating from the sea to Wieprza River to spawn. In the study 363 fish were obtained, caught in late autumn from 1998 to 2005 (excluding 2004) in Darlowo. All fish were measured, weighed, identified for the condition factor, age and gender. Most spawners were caught from 2000 to 2002, then their number was decreasing. Females were caught more than twice as often as males. Length of fish ranged from 34 to 126 cm, with an average of 87 cm, weight ranged from 0.4 to 20 kg, with an average of 6.3 kg and the condition factor KF ranged from 0.76 to 1.09, with average 0.91. Fish got to the sea as 1-2 years old smolts, while in the majority smolts were 2-years old and accounted for almost 96% of the total population. In the system of gender, 2-year old female smolts were accounted for higher percentage, almost 98%, but in males it was lower - 90%. The average length in the system of gender and groups of rivers' age were similar. At the sea age we highlighted 4 key groups, from 1+ to 4+. The largest was the group of A.2+ - 78% of the population and next one was A.3+ - 17.3% of the population. Dependence on gender, age group system was similar.
    Źródło:
    Rocznik Ochrona Środowiska; 2011, Tom 13; 1441-1452
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Fish Stocking Density on Water Quality, Growth Performance of Tilapia and Yield of Butterhead Lettuce Grown in Decoupled Recirculation Aquaponic Systems
    Autorzy:
    Al Tawaha, Abdel Razzaq
    Wahab, Puteri Edaroyati Megat
    Jaafar, Hawa Binti
    Zuan, Ali Tan Kee
    Hassan, Mohd Zafri
    Powiązania:
    https://bibliotekanauki.pl/articles/1839576.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    decoupled aquaponics system
    stocking density
    tilapia
    butterhead lettuce
    Lactuca sativa
    Opis:
    This study was conducted over a period of 52 days to determine the effects of fish stocking density on the water quality, growth performance of tilapia and yield of butterhead lettuce cultivated in decoupled recirculation aquaponic systems (DRAPS). In this study, three respective tilapia stocking densities (treatments) of 8 kg•m-3, 10 kg•m-3, and 12 kg•m-3 were used to evaluate the butterhead lettuce in the DRAPS, which consist of two independent loops. All treatments were done in triplicates. The results showed with increased stocking density, the electrical conductivity, total dissolved substances and salinity increased and dissolved oxygen decline. The results showed that the highest stocking density produced the highest nutrients accumulation of ammonia-nitrogen (NH3-N), ammonium (NH4), nitrite-nitrogen (NO2-N) and nitrate-nitrogen (NO3-N) and potassium (K) except for phosphorus (P). Nevertheless, based on the conversion of fish feed to NO3-N and P per kilogram of feeds, the lowest stocking density provided the highest concentration of NO3-N and P. It was documented that DRAPS relied solely on the fish waste produced an insufficient concentration of N, P, K and iron. The average survival rate of tilapia in all treatments was above 94% and was not a significant difference among the treatments.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 1; 8-19
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of economic and agricultural indicators under sustainable agriculture conditions with the use of Bayesian modelling
    Autorzy:
    Grotkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/297821.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    sustainable agriculture
    mineral fertilization
    stocking density
    agri-economic indicators
    Bayesian networks
    model
    Opis:
    Searching for relations between the level of production intensity, land efficiency and work performance, comparative analyses were carried out on international scale taking into consideration 45 countries from around the world with the use of the Statistical Yearbook (2013) and International Statistics Yearbook (2015). The research covered basic qualification criteria of sustainable agriculture, i.e. the level of mineral fertilization and stocking density as well as productivity rates, i.e. land efficiency and work performance and factors which shape them. The main aim of the research is the use of Bayesian modelling in order to predict the development of various economical and agricultural indicators and also show relationships between events basing on the theory of probability.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(3); 209-225
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fort Bema w Warszawie - jako przykład zagospodarowania zabytkowego obiektu militarnego
    Bems Fort in Warsaw as an Example of Stocking a Historical Military Object
    Autorzy:
    Różańska, A.
    Kaczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1188103.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Przyrodniczy we Wrocławiu
    Tematy:
    Fort Bema
    zagospodarowanie
    zabytek
    obiekt militarny
    Bem`s Fort
    stocking
    historical military object
    Opis:
    One of the numerous examples of fortifications placed on the territory of Poland is Warsaw Fortress. It is a ring-shaped fortress where the Citadel forms its central part and where there are two rings of forts. In the inner ring there is P-Parysów Fort also called Bem's Fort which is the subject of the present work. The purpose of this article is description of problems resulting from protection of cultural heritage connected with Warsaw Fortress. They are exemplified with concrete works referring to Bem's Fort. It is a fort relatively well preserved, having a big historical value and as such is subject to a complex conservator's protection. However, is the fact of legal conservator's protection sufficient for its real protection?
    Źródło:
    Architektura Krajobrazu; 2011, 3; 31-37
    1641-5159
    Pojawia się w:
    Architektura Krajobrazu
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Predicting parameters of Weibull probability density function for diametric distributions in A. melanoxylon, E. camaldulensis and E. nitens bioenergy plantation
    Autorzy:
    Sandoval, S.
    Cancino, J.
    Acuña, E.
    Rubilar, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078270.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Short-rotation crops
    stocking
    seemingly unrelated regression
    parameters recovery
    biomass
    and bioenergy
    Opis:
    Precise modeling of stand diameter distributions is required to provide accurate estimates of volume per diameter class and unit area. Therefore, it is necessary to obtain the most accurate probability density functions parameters estimates to predict stand diameter distribution in time. We evaluate two methods to estimate the parameters of the Weibull probability density function in the modeling of diameter distributions of bioenergy plantations. The methods considered a direct method of parameter prediction based on regression models (PPRM) and an indirect method of parameter recovery through the determi- nation of percentiles (PRDP). Both methods are considered systems of linear equations and are adjusted through simultaneous estimation of parameters using stand variables. The greatest precision was obtained with PPRM. The PRDP method was not effective in the prediction of diameter distributions due to the high level of truncation of the observed distributions showing an overestimation of the distribution for the largest diameter classes. Estimated parameters of the Weibull PDF are directly related to mean height, quadratic mean diameter, and crop age; and are inversely related to stocking
    Źródło:
    Dendrobiology; 2021, 86; 8-18
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growing Conditions and System Productivity in a Closed-Loop Aquaponic System Under Varying Stocking Density
    Autorzy:
    Fabula, Jeannie-Rose G.
    Gavino, Helen F.
    Sace, Chito F.
    Cinense, Marvin M.
    Sicat, Emmanuel V.
    Abucay, Jose S.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201731.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    aquaponics
    red tilapia
    giant river prawn
    stocking density
    water quality
    growing conditions
    productivity
    Opis:
    Aquaponics is an integrated form of a multi-commodity production system that combines a recirculating aquaculture system with the hydroponic cultivation of crops using the same water via recirculation using pumps. However, the ideal density of cultured aquatic species and the suitable fish/plants/fish feed combinations applicable under aquaponics must be established to determine its impact on the system’s performance, including the local growing conditions that could affect its productivity. Eighteen aquaponic systems following a closed-loop water recirculation method were established for the production of red tilapia, giant river prawns, lettuce, and duckweed. The study aimed to establish the ambient growing condition, water quality, and productivity of the system subjected to different stocking densities of fish (RT24 – 24 fish/m3, and RT48 – 48 fish/m3) and prawn (P0 – zero prawn, P12 – 12 prawns/m2, and P25 – 25 prawns/m2. Results show that with an ambient air temperature and humidity ranging from 30–35 °C and 52–71% during the production, the obtained water quality conditions in the system were: water temperature 27–30 °C; dissolved oxygen (DO) 2.8–3.3 mg/L; pH – 8.3; total ammonia nitrogen (TAN) close to 0, Nitrite – 0; Nitrate – 40 to 160 mg/L; total dissolved solids (TDS) – 580 mg/L; and a daily water loss of 1.47% which were within the tolerable growth conditions of the different species. The stocking density of 24 fish/m3 and 12 prawns/m2 resulted in better growth and yield performance of the cultured aquatic species. However, the stocking densities had no significant effect on the growth and yield of lettuce and duckweed.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 6; 25--39
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Stocking Density on Water Quality of Tilapia (Oreochromis niloticus Linnaeus, 1758) in Round Container with Current and Venturi Aeration System
    Autorzy:
    Nariswari, Shalsabilla
    Yustiati, Ayi
    Rostini, Iis
    Suryadi, Ibnu Bangkit Bioshina
    Powiązania:
    https://bibliotekanauki.pl/articles/1030997.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Current
    Microbubble
    Oreochromis niloticus
    Round Container
    Stocking Density
    Tilapia
    Venturi Aeration
    Water Quality
    Opis:
    This research aims to determine the optimal stocking density for the water quality of tilapia in a round container with current and venturi aeration system. Research was conducted at the Aquaculture Laboratory Building 4th, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. The research method was carried out experimentally using the Completely Randomized Design (CRD) method consisting of three treatments with five replications, namely stocking density treatment with 15 fish, 22 fish, 30 fish using 15 L water in a container. The fish used are 3-5 cm of tilapia fry. Fish were treated for 40 days. The feed given is 5% biomass which is updated every 10 days. The parameters observed were water quality consist of temperature, dissolved oxygen (DO), pH, ammonia levels which were measured every 10 days. Based on the research results, it was concluded that the best treatment was stocking density of 15 fish/15 L in a round container with current and venturi aeration system with an average temperature of 26 °C, dissolved oxygen of 5.62 mg/l, pH of 7.09, ammonia levels 0.007 mg/l.
    Źródło:
    World Scientific News; 2020, 145; 397-408
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vimba Vimba vimba (L.) from the Rega River - support of natural spawning in 2004-2008 and the natural population
    Certa Vimba vimba (L.) z rzeki Regi - wspieranie naturalnego tarła w latach 2005-2008 a naturalna polpulacja
    Autorzy:
    Tanski, A.
    Czerniejewski, P.
    Keszka, S.
    Pender, R.
    Pilch, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/85115.pdf
    Data publikacji:
    2011
    Wydawca:
    Akademia Pomorska w Słupsku
    Tematy:
    vimba
    Vimba vimba
    Rega River
    natural spawning
    natural population
    biogeography
    threatened species
    stocking
    restoration
    spawning site
    Opis:
    The paper reports results of a study on the population of vimba in the Rega River aimed at localisation of the spawning sites and support of the natural reproduction by stocking. The spawning sites were localised with the help of electric catching and the coordinates were determined by GPS units. The fish caught to be used for artificial spawning (145 individuals) were measured (l.t. and l.c.) using an electronic calliper coupled with a PC unit. The sex of the fish was identified and on the basis of scale analysis the age and rate of length and mass increase were estimated. The backcalculation readings were made using the Rosa Lee method. The model of growth was established on the basis of the von Bertalanffy formula. Comparisons of groups of fish were drawn with the help of the nonparametric Mann Whitney U test. Correlations between variables were evaluated by analysis of regression, while the significance of the correlation coefficient was checked by t test. The rate of vimba mass increase was calculated using the modified von Bertalanffy formula was found to be described by Wt = 1215.103[1-e-0.133609(t+0.57322)]2.7559. The spawning sites of vimba localised in the Rega River section between Gryfice and Trzebiatow were concluded to be good sources of spawners for artificial spawning and the number of spawners caught in this section of the river ensures continuation of vimba restitution in the Rega River. The hitherto stocking measures aimed at restoration of vimba population have brought satisfactory results as evidenced by the age structure of the fish caught in the electric fishing in 2008.
    Źródło:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2011, 15
    1643-0115
    Pojawia się w:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ładunek azotu z nawozów naturalnych na obszarze zlewni górnej Wisły
    The load of nitrogen from manures in the Upper Vistula basin area
    Autorzy:
    Smoroń, S.
    Twardy, S.
    Kopacz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/339526.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    dyrektywa azotanowa
    nawozy naturalne
    obsada zwierząt
    zlewnia górnej Wisły
    manures
    nitrate directive
    stocking rate
    Upper Vistula basin
    Opis:
    W pracy analizowano stan pogłowia zwierząt gospodarskich oraz ilość N pochodzącego z nawozów naturalnych, a także dokonano oceny zagrożenia zanieczyszczenia wód azotanami pochodzenia rolniczego, na obszarze zlewni górnej Wisły (po przekrój w Zawichoście). Kodeks dobrej praktyki rolniczej określa, że ze względów środowiskowych ilość azotu w nawozach naturalnych, pochodzących od zwierząt gospodarskich nie powinna przekraczać 170 kg·ha-¹ UR, a obsada zwierząt gospodarskich, nie może być większa niż 1,5 DJP·ha-¹ UR. Do przeprowadzenia obliczeń wykorzystano komputerowy program MacroBil opracowany w Instytucie Uprawy Nawożenia i Gleboznawstwa – PIB. Dane liczbowe wprowadzone do programu pochodziły z poszczególnych gmin. Wykorzystano również publikowane wyniki monitoringu wód powierzchniowych z lat 2005-2006. Analiza materiału obliczeniowego wykazała, że produkcja rolnicza cechowała się małą intensywnością, charakterystyczną dla rolnictwa ekstensywnego. Obsada zwierząt wynosiła 0,43 DJP·ha-¹ UR, tj. 28,7% liczby zalecanej ze względów środowiskowych, a średnia dawka N w nawozach naturalnych na tym terenie 33,5 kg·ha-¹ UR, co stanowi ok. 20% maksymalnej dawki określonej w Kodeksie. Tak mała intensywność produkcji rolniczej oznacza, że nie powinno pojawić się zagrożenie zanieczyszczenia środowiska wodnego azotanami ze źródeł rolniczych. Potwierdzają to badania WIOŚ, z których wynika, że maksymalne stężenie NO3 w wodach powierzchniowych tego rejonu sięgało 27,4 mg·dm-³.
    The paper deals with the Upper Vistula basin (up to the section at Zawichost). The status of livestock and the amount of N derived from manures was analyzed as well as the risks of water pollution by nitrates from the agricultural sources. The Code of Good Agricultural Practice specifies (for environmental reasons) that the amount of nitrogen in fertilizers originated from livestock should not exceed 170 kg per hectare of agriculture land, and the stocking rate cannot be higher than 1.5 Live stock Unit (LU) per hectare of Agriculture Land (AL). The Macrobil computer program (developed by IUNG-PIB) was used to conduct the calculations. The data for the program originated from the respective communes. The published results of surface water monitoring from the period 2005-2006 were also used. An analysis of calculation showed that agricultural production was described by the low intensity, characteristic for an extensive farming. The stocking rate was 0.43 LU per hectare of AL, i.e. 28.7% of recommended for the environmental reasons. The average rate of nitrogen from natural fertilizers in this area was 33.5 kg per hectare of AL, which is about 20% of the maximum rate set in the Code of Good Agricultural Practice. The risk for the water environment by nitrates from the agricultural sources should not appear with such low-intensity agricultural production. The studies conducted by regional inspectorates for the environment protection confirmed that the maximum concentration of nitrates in the surface waters in this region reached 27.4 mg per litre.
    Źródło:
    Woda-Środowisko-Obszary Wiejskie; 2011, 11, 1; 277-288
    1642-8145
    Pojawia się w:
    Woda-Środowisko-Obszary Wiejskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kształtowanie zróżnicowanej struktury drzewostanów z wykorzystaniem metody BDq
    Application of the BDq method in uneven-aged stands silviculture
    Autorzy:
    Brzeziecki, B.
    Kornat, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973764.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    struktura drzewostanu
    ksztaltowanie struktury
    rozklad piersnic
    metoda BDq
    diameter distribution
    stand conversion
    stocking control
    sustainable yield
    uneven−aged
    silviculture
    BDQ method
    Opis:
    The BDq method, a tool of stocking control in uneven−aged stands, with a special reference to the problem of determining diameter structure of cuttings, is introduced. Both theoretical foundations, as well as a practical application of the BDq method are presented on the example of conversion of two−storied stands, consisting of silver fir and Scots pine, to stands characterized by a plenter−like structure.
    Źródło:
    Sylwan; 2011, 155, 09; 589-598
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Produkcyjność plantacji wybranych klonów topoli w południowo-wschodnim Kazachstanie
    Productivity of the selected poplar cultivars in the plantation conditions in south-eastern Kazakhstan
    Autorzy:
    Sarsekova, D.N.
    Zasada, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/991006.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa szybkorosnace
    topola
    klony
    wzrost roslin
    piersnice drzew
    wysokosc drzew
    miazszosc drzew
    uprawa plantacyjna
    plantacje drzew lesnych
    produkcyjnosc
    Kazachstan
    forest productivity
    land reclamation
    initial spacing
    tree stocking
    volume increment
    Opis:
    The topic of forest plantations is particularly important in countries with low forest cover, where the demand for wood is particularly high, such as e.g. Kazakhstan. The main goal of this paper is to present the results of research on the productivity of selected cultivars of poplar: 62027−1 hybrid and Kazakh poplar, grown in various spacings (2,5×1, 3×1,5 and 3×2 m, which translates to stocking of 4000, 2220 and 1667 trees per ha, respectively), and the possibility of their cultivation in the conditions of southeastern Kazakhstan. The conducted experiments confirmed the high production potential of the selected hybrid poplars. The average volume of the individual trees' trunks at the age of 23 years reached 0,4−0,5 m³, the total growing stock can be up to 800−1000 m³/ha and the mean annual increment from 29 to 44 m³/ha. More adapted to the local conditions proved to be hybrids belonging to a section of white poplars. Due to dying tree tops and signs of damage from insects emerging at age exceeding 22−23 years, observed especially in plantations consisting up of hybrids belonging to the black poplars section, plantation rotation should not exceed 20 years. Establishing the poplar plantations using selected varieties is also one of the promising ways for reclamation of the saline soils of south−eastern Kazakhstan. Along with the timber and the possible use of biomass, plantations can be also used as a source of feed and hay for livestock.
    Źródło:
    Sylwan; 2014, 158, 06; 453-462
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kształtowanie zróżnicowanej struktury drzewostanów w warunkach nizinnych
    Promoting diverse forest stand structure under lowland conditions
    Autorzy:
    Brzeziecki, B.
    Drozdowski, S.
    Bielak, K.
    Buraczyk, W.
    Gawron, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/994357.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany
    struktura drzewostanu
    struktura warstwowa
    struktura gatunkowa
    ksztaltowanie struktury
    postepowanie hodowlane
    struktura grubosci
    rozklad piersnic
    metoda BDq
    białowieża forest
    close−to−nature silviculture
    stand structure
    silvicultural planning
    stocking control
    Opis:
    The paper presents preliminary results and experiences concerning promoting diverse structures in forest stands dominated by light demanding tree species, i.e. those that prevail under conditions of Polish lowlands. Data was collected in the ‘Control Unit Browsk 28C', established in 2002 in the managed part of the Białowieża Forest (eastern Poland) and surveyed again in 2011.
    Źródło:
    Sylwan; 2013, 157, 08; 597-606
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies