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Wyszukujesz frazę "forest ecosystem" wg kryterium: Wszystkie pola


Tytuł:
Forest ecosystem services – assessment methods
Autorzy:
Kornatowska, Bożena
Sienkiewicz, Jadwiga
Powiązania:
https://bibliotekanauki.pl/articles/2045717.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest functions
non-market forest values
economic valuation methods
biodiversity
Opis:
Forest ecosystems represent the most important values of natural assets. In economic valuation techniques, to estimate the value of forest ecosystem services, the attention is still focused mainly on their market values, i.e. the value of benefits measured in the economic calculation based, first of all, on the price of timber. The valuation of natural resources is currently supported by considerations of the global policy, in order to strengthen the argumentation justifying the need to incur expenditure related to the protection of biodiversity. There is increasing evidence that biodiversity contributes to forest ecosystem functioning and the provision of ecosystem services. Natural capital of forests can be consumed directly as food, wood and other raw materials or indirectly – by benefitting from purified water and air, safeguarded soils or protected climate. At the same time, forest ecosystems provide us with a range of intangible values – scientific, cultural, religious as well as encompass heritage to pass on to future generations. In the era of increasing pressure on the use of free public goods (natural resources), it is necessary to improve understanding of the role of forests in creating national natural capital, and in enhancing the quality of human life. All things considered, the so called non-market forest ecosystem services may have a much higher value than the profits from the production of timber and raw materials. Needless to say, non-market values of forest ecosystems are of great importance for the quality of human life, and the awareness of this should translate into social behavior in the use of natural resources. This paper reviews the methods to estimate the value of forest ecosystem services in view of recently acknowledged paradigm to move forward from economic production to sustainable human well-being.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 4; 248-260
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest ecosystem as a source of CO2 during growing season: relation to weather conditions
Autorzy:
Taufarova, K.
Havrankova, K.
Dvorska, A.
Pavelka, M.
Urbaniak, M.
Janous, D.
Powiązania:
https://bibliotekanauki.pl/articles/26563.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
forest ecosystem
carbon dioxide
source
growing season
weather condition
Norway spruce
Opis:
Net ecosystem production reflects the potential of the ecosystem to sequestrate atmospheric CO2. Daily net ecosystem production of a mountain Norway spruce forest of the temperate zone (Czech Republic) was determined using the eddy covariance method. Growing season days when the ecosystem was a CO2 source were examined with respect to current weather conditions. During the 2005, 2006, and 2007 growing seasons, there were 44, 65, and 39 days, respectively, when the forest was a net CO2 source. The current weather conditions associated with CO2 release during the growing seasons were: cool and overcast conditions at the beginning or end of the growing seasons characterized by a 3-year mean net ecosystem production of -7.2 kg C ha-1 day-1; overcast or/and rainy days (-23.1 kg C ha-1 day-1); partly cloudy and hot days (-11.8 kg C ha-1 day-1); and overcast and hot days (-13.5 kg C ha-1 day-1). CO2 release was the highest during the overcast or/and rainy conditions (84%, average from all years), which had the greatest impact during the major production periods. As forests are important CO2 sinks and more frequent weather extremes are expected due to climate change, it is important to predict future forest carbon balances to study the influence of heightened variability in climatic variables.
Źródło:
International Agrophysics; 2014, 28, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Las - miasto - ekosystem
Forest- city - ecosystem
Autorzy:
Gasek, A.
Nowacka, W.L.
Staniszewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/880581.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
miasta
Warszawa
ekosystemy miejskie
rzeka Wisla
lasy miejskie
lasy legowe
zagospodarowanie rekreacyjne
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2016, 18, 2[47]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka czeremchy (Prunus) pozyskanej z ekosystemów naturalnych
Properties of bird cherry (Prunus) obtained from the forest ecosystem
Autorzy:
Telichowska, Aleksandra
Dziedziński, Marcin
Szczepaniak, Oskar
Kobus-Cisowska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/883866.pdf
Data publikacji:
2019-12-15
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
czeremcha zwyczajna
Prunus padus
owoce
liscie
kora
wlasciwosci
wystepowanie
ekosystemy naturalne
bird cherry (Prunus padus L.)
fruits
leaves
bark
properties
food industry
pharmaceutical industry
food technology
Opis:
Czeremcha (Prunus) jest rośliną ozdobną w parkach i ogrodach. W Europie w XX wieku czeremcha została introdukowana na tereny leśne z uwagi na ochronę przed wiatrem i ogniem, zwłaszcza lasów iglastych, a także w celu próby odwrócenia niekorzystnego stosunku węgla do azotu dzięki opadowi liści, które mają wpływ na procesy glebowe. Obecnie czeremcha stanowi problem, ponieważ jest rośliną wysoce ekspansywną i zaburza równowagę leśną. Czeremcha ma jadalne owoce z gorzkawym posmakiem. Suszone owoce wykorzystywane są jako składnik nalewek i przyprawa do potraw mięsnych i ciast, a w medycynie ludowej uznawana była także za roślinę leczniczą. Surowcem zielarskim jest również jej kora pozyskiwana z młodych gałązek razem z pąkami liściowymi. W literaturze przedmiotu nie ma jednak obszerniejszych in-formacji na temat wykorzystania czeremchy. Preparaty z owoców, liści czy kory tej rośliny nie znalazły szerokiego zastosowania jako składniki żywności, gdyż nie do końca znane jest ich działanie. Z uwagi na zasięg występowania czeremchy na terenie polskich lasów, parków, łąk i ogrodów oraz jej znikome wykorzystanie w przemyśle spożywczym czy farmaceutycznym, zasadne jest ukierunkowanie zagospodarowania owoców, liści i kory czeremchy wskazując na ich działania funkcjonalne.
Bird cherry (Prunus padus L.) and American bird cherry (Prunus serotina) are used as ornamental plants in parks and gardens. In Europe in the twentieth century, bird cherry was introduced to the forest areas due to protection against wind and fire, especially in coniferous forests, as well as to try to reverse the unfavorable carbon-nitrogen ratio due to leaf fall affecting soil processes. Currently, bird cherry is a problem because it is a highly expansive plant and disturbs the forest balance. Bird cherry has edible fruit with a bitter aftertaste. Currently, dried fruit is used as an ingredient in tinctures and dumplings and in folk medicine it was also considered a medicinal plant. The herb raw material is also bird cherry bark obtained from young twigs, together with leaf buds. However, this is limited information on the use of bird cherry. At pre-sent, preparations made of both fruit and leaves or bark of this plant have not found wide application as food ingredients. The effects of the ingredients they contain are not fully known. There is also no unambiguous information about benefi-cial compounds. Due to the extent of bird cherry occurrence in Polish forests, parks, meadows and gardens, and its insignificant use in industry, it is reasonable to indicate and direct the development of not only fruit, but also leaves and black cherry bark indicating their functional activities.
Źródło:
Technika Rolnicza Ogrodnicza Leśna; 2019, 5; 17-21
1732-1719
2719-4221
Pojawia się w:
Technika Rolnicza Ogrodnicza Leśna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Terrestrial snails typical of forest ecosystems of Wielkopolska
Autorzy:
Jankowiak, A.
Kalinowski, T.
Czyz, M.
Powiązania:
https://bibliotekanauki.pl/articles/83833.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
terrestrial snail
snail
forest ecosystem
Wielkopolska region
species distribution
Źródło:
Folia Malacologica; 2012, 20, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoparasitic nematodes of forest ecosystems of the Ukrainian Carpathians
Autorzy:
Kozlowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/841365.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Ukraine
phytoparasitic nematode
forest ecosystem
Carpathians Mountains
nematode
Źródło:
Annals of Parasitology; 1999, 45, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Martwe i zamierające drzewa w ekosystemie leśnym - ilość, jakość i zróżnicowanie
Dead and dying trees in forest ecosystem – quantity, quality, and diversity
Autorzy:
Ciach, M.
Powiązania:
https://bibliotekanauki.pl/articles/881746.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lasy
gospodarka lesna
ekosystemy lesne
drzewa zamierajace
drzewa martwe
drewno martwe
jakosc
ptaki
wybiorczosc siedliskowa
dziecioly
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2011, 13, 2[27]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can payments for ecosystem services contribute to sustainable development in the Brazilian Amazon?
Autorzy:
Seehusen, S.E.
Powiązania:
https://bibliotekanauki.pl/articles/38733.pdf
Data publikacji:
2009
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest ecosystem service
sustainable development
Brazil
Amazon River
ecological economics
Opis:
The Brazilian Amazon supplies the world with several forests ecosystem services, many of which are essential to sustain human life on earth. Nevertheless, the Amazon is threatened by deforestation and degradation implying in reductions on the provision of these. According to economic theory, as ecosystem services are positive externalities and public goods, agents do not take into consideration the costs and benefits of their consumption and production of ecosystem services into their economic decisions. To address this problem payment for ecosystem services – PES – emerged, aiming to provide a source of income to the poor people living in forest areas, stimulating them not to deforest, and making agents who are indebted with the nature pay for their overconsumption of ecosystem services. There is still controversy about possible impacts of the instrument. This article accesses the potentials of PES to contribute to sustainable development in the Brazilian Amazon using the three goals related to sustainable development proposed by the ecological economics theory: efficient allocation, fair distribution, and sustainable scale. The study shows that PES as a pure market approach is unlikely to solve neither the scale nor the distribution problems. Therefore, for PES to achieve sustainable development, markets for ecosystem services should first be constrained by a maximum sustainable scale. Then, measures should ensure fair distribution in second place. Only after these questions have been tackled, it is desirable that agents interact in the ecosystem services markets to lead to an efficient allocation of resources.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2009, 51, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Slope aspect and altitude effect on selected soil organic matter characteristics in Beskid Mountains forest soils
Autorzy:
Staszel, Karolina
Błońska, Ewa
Lasota, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2040996.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
carbon stock
climatic factors
dehydrogenases activity
forest ecosystem
nitrogen stock
Opis:
In the era of dynamic climate change, it is important to have knowledge on the interactions between climatic factors and processes occurring in the soil environment. The present study aimed to determine how slope aspect and altitude above sea level influence carbon and nitrogen accumulation and dehydrogenases activity of forest soils. The study was conducted in the Beskid Żywiecki in the south-facing part of Poland. Soils of the same texture, with similar vegetation species composition, in different altitude variants (600, 800, 1000 and 1200 m above sea level) and different north-facing and south-facing slope aspect were selected for the study. For each height and slope aspect variant, samples were collected from the surface horizons of soils for further analyses. The basic chemical properties and dehydrogenases activity of the soil samples were determined. Carbon and nitrogen stocks in the surface horizons of the soils were calculated. The analyses confirmed the influence of location conditions on the carbon and nitrogen stocks in mountain forest soils. The stock of carbon and nitrogen increased with the height up to 1000 m a.s.l. In the soils at the highest altitude, the reserve of carbon and nitrogen decreased regardless of the slope aspect variant. There were no statistically significant differences in carbon and nitrogen stocks between slope aspect variant. The highest dehydrogenases activity was associated with the organic horizons of the soils at the lowest altitude in height gradient. In our study, higher dehydrogenases activity was observed in the north-facing slope soils, and this finding can be explained by more stable thermal conditions.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 214-224
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant-to-soil pathways in the subarctic - qualitative and quantitative changes of different vegetative fluxes
Autorzy:
Gorbacheva, T. T.
Kikuchi, R.
Powiązania:
https://bibliotekanauki.pl/articles/363218.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
rozkład
fenole
ekosystem leśny
wegetacja
decomposition
phenols
forest ecosystem
vegetation
Opis:
Considering plant-to-soil pathways, decomposition of vegetative fluxes such as litter and litterfall is one of the important processes that adjust the carbon cycle and nutritional elements in the formation of a forest's organogenic horizon. However, there is little information available on this subject, and the fractional structure (amount, type and interrelation) of organic matter also seems to receive little attention. Using 7 different vegetative samples, a field study was performed over 3 years to find the relation between phenolics content and mass losses in the subarctic region (N66° and E31°). In addition, climate effects on this relation were investigated. The data obtained from this field study testify that (i) an intensive loss of organic matter occurred in active parts of various litterfalls and (ii) leached phenols were related with mass losses (decomposition rates) of vegetative fluxes (litterfalls and litters) to the soil. The statistic analysis suggests that (iii) total mass losses of samples (except litter) were connected with both the temperature sum and the precipitation sum, and (iv) phenolics losses also had a similar trend in different kinds of litterfall.
Źródło:
Environmental Biotechnology; 2006, 2, 1; 26-30
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accumulation of chromium, aluminum, barium and arsenic in selected elements of a forest ecosystem in the Przedbabiogorskie Mountain Range in the Western Carpathians
Autorzy:
Niemiec, M.
Chowaniak, M.
Paluch, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/958262.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Large spore mushrooms and trees are frequently used in bioindication, the reasons being their widespread occurrence and substantial capacity to accumulate trace elements. The aim of the research was to compare the bioaccumulation coefficients of As, Ba, Al, and Cr in Lactarius salmonicolor L., and in Abies alba M. needles, collected in the Przedbabiogórskie Mountain Range. In 2015, samples of soil, mushrooms and Abies alba needles were collected from 17 sites. All the collected samples were dried and homogenized. Laboratory samples of the mushrooms and needles were subjected to dry mineralization in an open system. The soil samples were mineralized in aqua regia. Concentration of elements in the solutions was determined by atomic emission spectrometry. Based on the results, bioaccumulation factors of individual elements were calculated. The bioaccumulation factors were calculated by dividing the concentration of a given element in the dry matter of mushrooms and needles used in the research by the content of the same element in the soil. In addition, the correlation coefficient between the content of the above elements in the soil, mushrooms and needles was computed. The content of the elements in forest soils was low, typical for unpolluted areas. Concentrations of the elements in Lactarius salmonicolor L. and in Abies alba M. needles were in the following decreasing order: As>Cr>Ba>Al. The values of bioaccumulation factors of the elements in needles can be arranged from the lowest as follows: Al>Cr>As>Ba, whereas in the mushrooms the order was Al>Ba>Cr>As. No statistically significant relationship between the organic carbon content in the soil and the level of accumulation of the elements in the fungal fruiting bodies and fir needles was observed. The content of elements in the soil had the largest effect on the amount of these elements accumulated in Abies alba needles and in biomass of Lactarius salmonicolor.
Źródło:
Journal of Elementology; 2017, 22, 3
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest species mapping using airborne hyperspectral APEX data
Autorzy:
Tagliabue, Giulia
Panigada, Cinzia
Colombo, Roberto
Fava, Francesco
Cilia, Chiara
Baret, Frédéric
Vreys, Kristin
Meuleman, Koen
Rossini, Micol
Powiązania:
https://bibliotekanauki.pl/articles/1035947.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Vegetation map
Hyperspectral
Aerial
Supervised classification
Multi-temporal dataset
Forest ecosystem
Opis:
The accurate mapping of forest species is a very important task in relation to the increasing need to better understand the role of the forest ecosystem within environmental dynamics. The objective of this paper is the investigation of the potential of a multi-temporal hyperspectral dataset for the production of a thematic map of the dominant species in the Forêt de Hardt (France). Hyperspectral data were collected in June and September 2013 using the Airborne Prism EXperiment (APEX) sensor, covering the visible, near-infrared and shortwave infrared spectral regions with a spatial resolution of 3 m by 3 m. The map was realized by means of a maximum likelihood supervised classification. The classification was first performed separately on images from June and September and then on the two images together. Class discrimination was performed using as input 3 spectral indices computed as ratios between red edge bands and a blue band for each image. The map was validated using a testing set selected on the basis of a random stratified sampling scheme. Results showed that the algorithm performances improved from an overall accuracy of 59.5% and 48% (for the June and September images, respectively) to an overall accuracy of 74.4%, with the producer’s accuracy ranging from 60% to 86% and user’s accuracy ranging from 61% to 90%, when both images (June and September) were combined. This study demonstrates that the use of multi-temporal high-resolution images acquired in two different vegetation development stages (i.e., 17 June 2013 and 4 September 2013) allows accurate (overall accuracy 74.4%) local-scale thematic products to be obtained in an operational way.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2016, 20, 1; 28-33
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Saprotrofy - rola w ekosystemie lesnym oraz mozliwosc ich wykorzystania w gospodarce lesnej
Saprotrofic fungi - its role in forest ecosystem and possibilies to utilise in forestry
Autorzy:
Bartnik, C
Powiązania:
https://bibliotekanauki.pl/articles/880511.pdf
Data publikacji:
2007
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
grzyby
ekosystemy lesne
wykorzystanie
znaczenie ekologiczne
melioracje biologiczne
lesnictwo
grzyby saprotroficzne
Opis:
Grzyby saprotroficzne są niezbędnym ogniwem w ekosystemie leśnym. Jako reducenci rozkładają martwą materię organiczną (w tym martwe pnie, gałęzie, liście), dzięki czemu umożliwiają innym organizmom (roślinom i zwierzętom) zajmowanie odpowiednich siedlisk. Jedną z istotnych ról, wciąż niedocenianą w leśnictwie, jest wpływ tych grzybów na wzrost żyzności siedliska oraz na zwiększenie odorności na niekorzystne czynniki biotyczne i abiotyczne. Możemy uzyskać te pozytywne efekty poprzez wykorzystanie saprotrofów do tzw. melioracji biologicznej. Szczególnie korzystny wpływ tych grzybów może mieć miejsce na siedliskach boru suchego i zalesianych gruntach porolnych. W celu zwiększenia różnorodności gatunkowej saprotrofów w lasach gospodarczych niezbędne jest podjęcie adekwatnych działań zmierzających do wprowadzenia tych grzybów do drzewostanów, w których wcześniej usuwano rygorystycznie drewno, oraz zapewnienie im warunków bytowania.
Saprotrofic fungi are crucial link in ecosystem of forest. As reducents, they decompose dead organic substance (including dead trunks, branches, leaves), and thus enable other organisms (plant and animals) to occupy relevant habitats. One of its sygnificant roles, still understimated in forestry, is the influence of the fungi on both increase in fertility of on an habitat and in immunity against disadvantageous biotic and abiotic factors. These positive effects can be produced by the use of saprotrofics to, so called, biological melioration. The particularly advantagoeus influence of it may take place on habitats dry forest and afforested agricultural areas. In oder to increase diversity of species of saprotrofics in economic forests, it is indispensable to take steps that world lead to putting these fungi into stand, having removed rigorous wood from it before, but also to ensure proper conditions of existence to them.
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2007, 09, 2-3[16] cz.2
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Profile variability of lithium content in soils of selected forest ecosystems
Autorzy:
Malczyk, P
Powiązania:
https://bibliotekanauki.pl/articles/1450642.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
total lithium
forest ecosystem
soil profile
soil
lithium content
forest soil
distribution
terrestrial ecosystem
Opis:
The distribution of total lithium content with depth was studied in soils of selected forest ecosystems, with regard to their physicochemical properties and possible anthropogenic impact. The six soil profiles, representing forest soils, were selected for the study: Udipsamments formed from sandr sand, eolian sand and alluvial sand, and Haplorthods Humic formed from eolian sand, Dystrochrepts formed from alluvial silt and Eutrochrepts formed from boulder loam. The total Li content was determined after previously dissolving the samples in a mixture of concentrated acids: hydrofluoric and nitric (HF+HNO3). The content of Li in solutions was determined using the FAS method on PU-9100 X Philips spectrometer. The total lithium content in studied soils under investigations occurs in range of 1.63 to 229.68 mg kg-1 and was considerably lower in organic horizons (1.63-8.07 mg kg-1 ) than in mineral (17.58-229.68 mg kg-1). The concentration of lithium in subhorizons of forest litter increases according to the litter decomposition degree (01<0f<0fh). The Li concentrations found in all forest soils formed from sand were much higher than its natural content in surface mineral horizons of arable soils 1.30-56.00 mg kg-1. The total lithium content in studied soils was negative statistically correlated with the content of organic carbon (-0.6062), silt and clay fraction (-0.7131 and -0.6322), hydrolytic acidity (-0.5222), sum of exchangeable bases (-0.6196) and cation exchange capacity (-0.6277).
Źródło:
Acta Agrophysica; 2001, 50; 189-195
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization
Autorzy:
Rudawska, M.
Leski, T.
Gornowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/41277.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
forest ecosystem
Polska
nursery
Pinus sylvestris
nitrogen fertilization
ectomycorrhizal fungi
fungi
morphotype
Opis:
Indigenous mycorrhizal colonisation of one (1/0) and two (2/0) year old Scots pine (Pinus sylvestris L.) seedlings from forest nurseries situated in the north-west part of Poland was investigated. Seedlings were fertilized after a schedule designed to satisfy their requirements which resulted from soil analysis of each nursery. In autumn needle nitrogen concentration and mycorrhizal status were estimated. As a rule seedlings 1/0 obtained high doses of fertilizers, and their needle nitrogen concentration highly exceeded the recommended optimal level above which mycorrhiza formation is greatly restricted. Highly negative correlation was found between the nitrogen status of foliage and mycorrhizal quantitative and qualitative colonisation estimated in the abundance class of 0-5. When internal nitrogen level was low, several ectomycorrhizal morphotypes were found on roots of tested plants. Excessive nitrogen fertilization decreased root ramification pattern and along with increased pH promoted ectendomycorrhizal symbiosis. Two-year-old seedlings (2/0) were characterised by significantly lower nitrogen concentration in the needles which resulted in much higher ectomycorrhizal colonisation. Ectendomycorrhizal symbiosis in the case of 2/0 seedlings was scarce. The results indicate that natural colonisation in nurseries is dependent on the soil management practices, especially nitrogen fertilization. Optimalization of nitrogen fertilization may intensify ectomycorrhizal colonisation of the nursery stock from indigenous fungal species and improve the growth of Scots pine seedlings in bare-root nurseries and plantations.
Źródło:
Dendrobiology; 2001, 46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł

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