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Tytuł:
Chemistry of raw humus vs. chemistry of atmospheric precipitation on the example of pine forests of the Pomeranian Lakeland
Autorzy:
Wicik, Bogumił
Mikulska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2028863.pdf
Data publikacji:
2004-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
forest litter
humus
atmospheric precipitation
Opis:
This research, conducted for the purposes of the protection of the National Park Bory Tucholskie, contains the results of the investigation of the chemical composition of humus (forest litter) and of atmospheric precipitation. The gathered material allowed determining the fate (accumulation or removal) of chemical elements contained in the pine forest humus as well as to compare the abundance of nutrients in humus and in atmospheric precipitation.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2004, 11; 51-55
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mite (Acari) occurrence in selected substrates used for a restoration of degraded soils
Autorzy:
Klimek, A.
Chachaj, B.
Gackowski, G.
Dąbrowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/101510.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
forest litter
orchard litter
wood chips
reintroduction
soil regeneration
oribatid mites
Opis:
The number and groups of mites (Acari) and species composition of oribatid mites (Oribatida) were analysed in three different substrates used for the restoration of degraded soils: (1) pine forest litter, (2) apple orchard litter, and (3) pine chips. The study was conducted in the years 2011-2012, on microplots of the area of 1m2 , established in a belt of trees of a nursery in Białe Błota (Bydgoszcz Forest District). Average biannual mite density per 50 cm3 of the investigated substrates ranged from 14.6 to 54.43 individuals. The highest numbers of mites were found in shredded forest litter and the lowest in pine chips. The most abundant mites in the studied material were oribatid mites, accounting for 57.3 % of these arthropods. The highest number of oribatid mites was found in the forest litter (28), and the lowest (20) in pine chips. The number of species in both types of litter was similar in the first and second year of the study, but it rose three times in the pine chips substrate over the study period. Oribatid species in the litter substrates were dominated by the eurytopic Tectocepheus velatus, and the most abundant species in the pine chips substrate was Oribatula tibialis. The experiment indicated a possibility of practical use of the shredded litter in the reintroduction of soil mesofauna and soil regeneration. This may facilitate the soil inoculation process, e.g., by using seeders specially adapted for this purpose. Additionally, a quick colonization of wood chips by acarofauna may suggest the possibility of using them as an excellent substrate for soil regeneration.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2018, II/1; 277-291
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Use of Chosen Biological Methods for Forest Soil Revitalization in Scots Pine Cultivation
Autorzy:
Klimek, Andrzej
Rolbiecki, Stanisław
Rolbiecki, Roman
Gackowski, Grzegorz
Stachowski, Piotr
Jagosz, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1811739.pdf
Data publikacji:
2020
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
forest litter
mite
moss mite
mulching
mycorrhizal preparation
Pinus sylvestris
Opis:
The purpose of this investigation was to indicate the most effective method of revitalizing degraded forest area. The different modifications of wood chips were used as a substitute for humus layer. The mites (Acari), and moss mites (Oribatida) as the bio-indicators of soil succession changes were used. The study began 2 years after planting of Scots pine seedlings on the land devastated by military activity, at the former military training ground (GPS: 53.156943N, 17.986440E). The soil on this area was in the type of rusty soils and subtype of the rusty algae soils. Scots pine seedlings were planted in spring 2011, in a distance 1.5×0.8 m. In one-factor experiment four soil mulching treatments were tested: 1. uncovered soil – control (C), 2. soil mulched with wood chips (W), 3. W + mycorrhizal preparation (WM), 4. W + forest litter (WL). Three replicates of microplots arrangement was applied. Each microplot was 5 m long with 3 rows of Scots pine. Each replication covers 10 rows. Mulching with wood chips was carried out on April 12, 2012. On October 25, 2012, the wood chips on the WM microplots were inoculated with the mycorrhizal biopreparation, and on the WL microplots, a 10% addition of fresh forest litter from the ripe fresh coniferous forest was applied. After the end of the growing season of 2012, 2013 and 2014, the measurement of the plants was carried out (the height, the root neck diameter, the length of one-year increments in the last whorl, the number of one-year increments of the last whorl and the lengths of one-year increments of the last whorl). The samples for acarological tests were collected four times. In total, 40 substrate samples with a volume of 50 cm3 each were collected from each treatment. Mites extraction was carried out for 7 days in Tullgren apparatus. Mites were identified to the order, and moss mites to the species or genus, including juvenile stages. Calculated: the average density of mites, the dominance index, the species richness, the diversity of moss mites, the average number of species, and the Shannon general species diversity index. The use of soil mulching with the Scots pine wood chips did not significantly affect the growth and developmental characteristics of the Scots pine plants. After mulching with wood chips, the total number of mites increased many times, and moss mites began to dominate among micro-arthropods. Mulching treatments increased the number and the species diversity of moss mites in the substrate. The number of moss mites increased the most in wood chips without additives. The highest species diversity was observed in the wood chips with the addition of forest litter. Among moss mites Tectocepheus velatus visibly dominated in all study treatments. Oppiella nova and Scutovertex sculptus also constituted numerous mites populations. The study shows that the wood chips are very useful for use in the regeneration of the devastated and degraded forest soils.
Źródło:
Rocznik Ochrona Środowiska; 2020, Tom 22, cz. 2; 1097-1115
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Certesella larai (Amoebozoa: Arcellinida: Hyalospheniformes) a new soil testate amoeba species from the Dominican Republic and Chile challenges the definition of genera Certesella and Porosia
Autorzy:
Bobrov, Anatoly
Duckert, Clément
Mitchell, Edward A. D.
Powiązania:
https://bibliotekanauki.pl/articles/2041966.pdf
Data publikacji:
2022-02-14
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Testate amoebae
Hyalospheniidae
genus Porosia
genus Certesella
forest litter
peat bog
Opis:
Microbial diversity is known to be huge but remains only partly documented. Testate amoebae are a relatively well studied group or free-living protists that build morphologically characteristic shells on which the taxonomy of this group is mainly based. Among testate amoebae, the Hyalospheniformes are especially well documented and are a model group for microbial biogeography. Here we describe a new species of genus Certesella from Sphagnum mosses and forest litter samples collected in the Dominican Republic and Chile. We name this species Certesella larai to honour our esteemed colleague Enrique Lara. This species bears two large pores connected by tube, which are characteristic of the genera Porosia and Certesella. The new species fits best in the latter genus given the presence of a distinct, sometimes denticulated, neck with a bulge that is absent in genus Porosia but occurs in Certesella. Its elongated shape (length/breadth ratio 2.03–2.58) only overlaps with C. certesi, which is distinguishable by the presence of a distinct longitudinal groove in the neck region that is absent from the new species. Interestingly most specimens lacked the internal teeth which are usually present in members of genus Certesella. As such, while the morphology of C. larai strongly suggests a belonging to genus Certesella, molecular analyses are still required to confirm its phylogenetic position, clarify the relationships among all species in genera Porosia and Certesella and the definition and validity of these two genera. The presence of this new species in two rather distant regions – Caribbean and central Chile – suggests it is likely widespread, but possibly rare. However, this perception may be due to a sampling bias in favour of Sphagnum mosses and wet and organic-rich habitats. This illustrates the need for a more systematic sampling effort to document the full and mostly unknown taxonomic diversity of soil protists.
Źródło:
Acta Protozoologica; 2021, 60; 61-75
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Metals Concentration and Extractability in Forest Litters in the Area Impacted by Copper Smelter Near Legnica
Zawartość i rozpuszczalność metali ciężkich w próchnicach leśnych na terenach zdegradowanych przez hutnictwo miedzi
Autorzy:
Medyńska, A.
Kabała, C.
Powiązania:
https://bibliotekanauki.pl/articles/389558.pdf
Data publikacji:
2010
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
metale ciężkie
rozpuszczalność
przemysł miedziowy
ściółki leśne
zanieczyszczenie gleb
heavy metals
solubility
extractability
copper industry
forest litter
soil pollution
Opis:
Three permanent study areas, each consisting of four sarapling sites, located at distances of 500, 1500 and 2100 m from emission source, were established iii poplar plantings surrounding a large copper smelter near the town Legnica in Lower Silesia region of SW Poland. Total content as well as water and acetic acid extractable contents of Cu. Za. Fe, Ca and Mg were analyzed in saraples of forest litter (ectohumus) collected in November 2007. The total content of Cu reached 9590 mg o kg-1, and Zn - 4020 mg o kg-1 d.m. in the site located 500 m away of smelter, and rapidly decreased with distance, while the content of Fe, Ca and Mg decreased insignificantly. Up to 0.5 % of total Cu and up to 1.2 % of total Zn was in water-extractable form, while 0.11 mol o dm-3 acetic acid released up to 7.2 % of Cu and 41 % of Zn, and more than 50 % of total Ca and Mg. Copper and zinc are immobilized in alkaline litter under poplar stands surrounding copper smelter, but any factor acidifying the litter may rapidly enhance solubility of accumulated heavy metals.
Trzy stałe powierzchnie obserwacyjne, każda obejmująca po cztery punkty pobierania próbek, zlokalizowane w odległości 500, 1500 i 2100 m od źródła emisji zostały założone na obszarze zadrzewionym topolą wokół dużej huty miedzi w pobliżu Legnicy, w południowo-zachodniej Polsce. W próbkach próchnic nadkładowych pobranych w listopadzie 2007 r. analizowano całkowitą zawartość Cu. Zn, Fe, Ca i Mg oraz zawartość form rozpuszczalnych w wodzie i 0.11 mol o dm kwasie octowym. Całkowita zawartość miedzi w ściółce osiągała poziom 9590 mg o kg-1 suchej masy. a cynku -1020 mg o kg-1 s.m. na powierzchni zlokalizowanej 500 m od huty i raptownie zmniejszała się wraz z odległością.. Zawartość Po, Ca i .Mg w ściółkach również zmniejszała się wraz z odległością, lecz w znacznie mniejszym stopniu niż Cu i Zn. Do 0,5 % całkowitej zawartości Cu i do 1,2 % całkowitej zawartości Zn występowało w analizowanych ściółkach w formach rozpuszczalnych w wodzie destylowanej. 0.11 mol o dm-3 kwas octowy uwalniał nawet do 7.2 % całkowitej zawartości Cu i do 41 % całkowitej zawartości Zn oraz ponad 50 % całkowitej ilości Ca i Mg. Miedź i cynk są słabo rozpuszczalne w warunkach alkalicznego odczynu próchnic nadkładowych w drzewostanach topolowych, lecz jakichkolwiek naturalny lub antropogenny czynnik prowadzący do zakwaszenia ściółek może spowodować raptowny wzrost rozpuszczalności nagromadzonych metali ciężkich.
Źródło:
Ecological Chemistry and Engineering. A; 2010, 17, 8; 981-989
1898-6188
2084-4530
Pojawia się w:
Ecological Chemistry and Engineering. A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestrzenne rozmieszczenie zimujących chrząszczy kornika drukarza (I. typographus L.) i kornika zrosłozębnego (I. duplicatus C. R. Sahlb.)
Spatial distribution of hibernating adults of eight-toothed spruce bark beetle (I. typographus L.) and double-spined bark beetle (I. duplicatus C. R. Sahlb.)
Autorzy:
Onysko, Z.
Powiązania:
https://bibliotekanauki.pl/articles/973843.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Ips duplicatus
Ips typographus
entomologia lesna
kornik drukarz
rozmieszczenie przestrzenne
stadia rozwojowe
zimowanie
zimowiska
kornik zrosłozębny
leśnictwo
stadia zimujące
szkodniki roślin
pine−spruce stands
forest litter and soil
bark
forest protection
curculionidae
scolytinae
Opis:
Field research was conducted in selected pine−spruce stands of the Oleśnica Śląska Forest District (SW Poland), where in 2004 intensive mortality of trees infested by I. typographus and I. duplicatus was observed. The results show that most I. typographus beetles hibernated under the bark of sample trees (71.2%). Most I. duplicatus beetles hibernated in forest litter and soil (90.5%). In the litter and soil samples, the largest number of hibernating beetles (of both species) were observed in the close neighborhood of tree stems, within the radius of up to l m (96.2% and 94.0% respectively). The estimated number of beetles hibernating in the forest litter and soil under the canopy of a single sample tree was 383 and 61, respectively. In bark samples I. typographus hibernated only as adult (imago).
Źródło:
Sylwan; 2011, 155, 01; 21-30
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ ściółki sosnowej i dębowej na wzrost sadzonek sosny i zbiorowiska grzybów mikoryzowych w warunkach szkółki leśnej
Influence of pine and oak litter on growth and mycorrhizal community structure of Scots pine seedlings in bare-root nursery condition
Autorzy:
Leski, T.
Rudawska, M.
Aucina, A.
Skridaila, A.
Riepsas, E.
Pietras, M.
Powiązania:
https://bibliotekanauki.pl/articles/1009673.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
sciolka sosnowa
grzyby mikoryzowe
gleby
wzrost roslin
sadzonki
szkolki lesne
sosna zwyczajna
lesnictwo
sciolkowanie gleby
sciolka debowa
Pinus sylvestris
drzewa lesne
forest litter
scots pine seedlings
ectendomycorrhiza
ectomycorrhiza
bare−roots nursery
Opis:
The effects of pine and oak forest litter on mycorrhizal status of 2−year−old Pinus sylvestris L. seedlings grown in a bare−root nursery was investigated. The research was carried out in the nursery of Vilnius University Botanical Garden in Lithuania. Ectomycorrhizal communities were assessed by a combination of morphological and molecular techniques. Statistical analysis revealed significant effect of litter treatment on some growth parameters of seedlings: seedling height, needle dry weight and total seedling weight. The survival rate of seedlings was significantly highest for oak litter, intermediate for pine litter, and lowest for control soil. Pine seedlings were colonized by indigenous ecto− and ectendomycorrhizal symbionts. Seven mycorrhizal species (Suillus luteus, S. variegatus, Wilcoxina mikolae, Tuber sp., Tomentella sp., Cenococcum geophilum, Amphinema byssoides) were distinguished on the roots of pine seedlings as well as one ectomycorrhizal symbiont not identified to species level. In total, 6 mycorrhizal types were found in control soil, 5 in pine litter, and 8 in oak litter. Suilloid (S. luteus and S. variegatus) and Wilcoxina mycorrhizae were dominant on tested seedlings, irrespective of litter addition. Seedlings grown in untreated nursery soil were 34% colonized by W. mikolae, while suilloid mycorrhizae were dominant after litter treatment (81% in pine litter and 63% in oak litter). We may conclude that suilloid mycorrhizae are better adapted to the conditions related to litter addition than W. mikolae.
Źródło:
Sylwan; 2009, 153, 10; 675-683
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ materii organicznej na zmiany rozpuszczalności metali ciężkich w glebach zanieczyszczonych w świetle literatury
Influence of organic matter on the solubility of heavy metals in contaminated soils – a review of literature
Autorzy:
Cuske, M.
Karczewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/372422.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
miedź
mobilizacja
immobilizacja
węgiel brunatny
nawóz organiczny
osad ściekowy
kompost
biowęgiel
ściółka
rozpuszczalny węgiel organiczny
copper
mobilization
immobilization
brown coal
organic fertilizer
sewage sludge
compost
biochar
forest litter
dissolved organic carbon
Opis:
Artykuł przedstawia przegląd literatury poświęconej problematyce wpływu materii organicznej na zmiany rozpuszczalności metali ciężkich w glebach zanieczyszczonych. W procesach remediacji powszechnie stosuje się różne rodzaje materii organicznej w celu zwiększenia zdolności sorpcyjnej gleb i immobilizacji metali, jednak często opisywane są niepożądane efekty polegające na wzroście rozpuszczalności metali w wyniku zastosowania takich dodatków organicznych, jak węgiel brunatny, nawozy organiczne, osady ściekowe, komposty i biowęgiel. Tym doniesieniom poświęcono szczególną uwagę. Omówiono także tematykę zagrożeń związanych z formowaniem się i dekompozycją ściółek na zalesionych obszarach zdegradowanych.
The article presents a critical review of literature focused on the influence of organic matter on the changes in solubility of heavy metals in contaminated soils. Various kinds of organic matter are commonly used in remediation processes in order to increase soil sorption capacity and to immobilize heavy metals. Several papers reported, however, unwished-for effects of those measures, that involved an increase in the solubility of metals caused by application of organic amendments, including brown coal (lignite), organic fertilizers, sewage sludge, composts, and biochar. This review focuses particularly on such effects. Additionally, the hazards associated with formation and decomposition of forest litter in degraded areas after their forestation, have also been discussed.
Źródło:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2016, 162 (42); 39-59
1895-7323
Pojawia się w:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trends in forest fuel accumulation in pine forests of Kyiv Polissya in Ukraine
Autorzy:
Harzhii, Roman V.
Yavorovskyi, Petro P.
Sydorenko, Serhii Н.
Levchenko, Valery B.
Tyshchenko, Olexandr M.
Tertyshnyi, Anatolii P.
Yakubenko, Borys Ye.
Powiązania:
https://bibliotekanauki.pl/articles/2041249.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Pinus sylvestris L.
pine stands
forest fires
litter
forest fuel
Opis:
At present, forest fire research is becoming especially relevant in Ukraine. This study examines patterns of forest fuel accumulation in pine (Pinus sylvestris L.) stands that grow in different soil conditions with different pine stand structure. To estimate the load of forest fuel of different fractions, a combined methodology was used: the weighing method and the FIREMON (fuel load estimation) method. It was found that increase in surface forest fuel loads is not directly proportional to forest stands’ age. Fractional size distribution, capacity and loads of forest fuel depend on several factors, among which the greatest role is played by forestry characteristics of the pine stand. It was determined that in the forest site conditions of type C (fairly rich soils) in Kyiv Polissya, the share of forest litter compared to pine stands that grow in poor soil conditions (A) is smaller, ranging from 41% to 76% of the total forest fuel load. The mass proportion of the duff layer varies from 15% in young forest stands to 43% in mature stands. It was established that changes in forest fuel fractions for 1, 10, 100 and 1000 hours varied insignificantly with age rate. The share of substratum woody debris of 10 and 100 hours was insignificant and depended more on the forestry treatment regime on these sites. The mass proportion of coarse woody debris (1000 hours) was also insignificant, varying from 0% to 5.9% of the total load of surface fuel.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 116-124
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical relationship between leaf litter and tree growth characteristics of Tectona grandis species
Autorzy:
Eguakun, F. S.
Job, M.
Powiązania:
https://bibliotekanauki.pl/articles/1112678.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Correlate
Forest
Litter
Nutrient
Productivity
Tectona grandis
Opis:
Forest productivity relies on the quantity and quality of litter as this influences nutrient cycling in the ecosystem. Many studies have been carried out on litter fall, but few attempts has been made to relate litter fall nutrient content with tree growth variables The aim of this work was to investigate basic relationships between the leaf litter nutrient content of Tectona grandis and tree growth characteristics. The study was done at the arboretum of the Department of Forestry and Wildlife Management, University of Port Harcourt, Rivers State, Nigeria. Data were collected from four (4) randomly selected 20m × 20m (0.04ha) plots. Within each plots, four (4) litter traps at 8m apart was set at random to collect litter on a weekly basis, while tree growth variables were measured on trees around the trap. The collected litter was put into zip-lock bags and taken to the laboratory for nutrient content analysis. Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sodium (Na), magnesium (Mg) content and pH were included in this. The result shows that the average weekly leaf litter collected from the trap was 11.8g. In terms of average nutrient content, Nitrogen had the highest average at 1.8, while Sodium (Na) had the lowest value at 0.14. Among the tree growth variables, only height had a positive correlation with litter collected. The results also show that Nitrogen micronutrient content was related to the amount of litter collected (0.536). In addition, all the exchangeable base analysed in the study were also related to the amount of litter collected. Conclusively, the amount of litter produced is a major indicator of primary productivity because as litter quantity increases, available nutrient content for plant growth also increases, hence, having influence on tree height.
Źródło:
World News of Natural Sciences; 2018, 18, 2; 252-261
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forecasting carbon sequestered in leaf litter of Tectona grandis species using tree growth variables
Autorzy:
Eguakun, F. S.
Abraham, G. B.
Powiązania:
https://bibliotekanauki.pl/articles/1177778.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Carbon
Correlate
Equations
Forest
Litter
Sequestration
Significant
Tectona grandis
Opis:
Forests have several pools that acts as carbon sink to atmospheric carbon which is released by anthropogenic causes. Leaf litter is one of those very important pools whose role in nutrient cycling and carbon sequestration cannot be overemphasized. This study was conducted to develop equations for carbon stored in leaf litter of Tectona grandis using tree growth characteristics as explanatory variables. Data was collected from four 20 m × 20 m sample plots which were randomly selected. Within each plots, four litter traps were set to collect leaf litter on a weekly basis. The collected litter was further taken to the laboratory for carbon analysis. The tree growth variables measured in the plots were processed into suitable form for statistical analyses using descriptive statistics in form of tables, charts and graphs and inferential statistics using correlation and regression analysis. Different equation were developed and tried with different tree growth characteristics with a view to select the best equation among the simulated ones. The equation with a highest coefficient of determination (R2) and lowest standard error of estimate (SEE) was selected as the best fit. The average leaf litters produced per day ranged from 2.26g/m2 to 7.67g/m2, the maximum and minimum values of carbon stored in the studied species was 63%, 59% respectively. All the tried equations were significant and fit the data set well. The result showed that the logarithm equation has the highest R2 and lowest SEE values and was therefore selected as the best model. Result from the validated models showed that all tried equations except the exponential equation were good for prediction. Conclusively, the ability of the forest to sequester carbon is a function of the biomass production which is linked to the litter fall produced by the system. Since litter fall represent a major flux for the transfer of carbon and other nutrients between the vegetation and soil, it should therefore not be altered in order not to have an effect on below ground processes. Even though the scope of this study only covers a very small area and sample of the Nigeria forest, it is still very important for prediction of leaf litter carbon and hence, served as a tool for sustainable forest management.
Źródło:
World Scientific News; 2018, 100; 197-212
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic forest fire risk evaluation in Poland
Autorzy:
Szczygieł, Ryszard
Kwiatkowski, Mirosław
Kołakowski, Bartłomiej
Piwnicki, Józef
Powiązania:
https://bibliotekanauki.pl/articles/2041632.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest fire risk degree
dynamic forest risk
pine litter moisture content
method of forecasting forest fire risk
Opis:
The weather conditions determine the dynamic forest fire risk. In Poland, the dynamic forest fire risk is calculated using a method elaborated at the Forest Research Institute. The forest fire risk degree (4-level scale) is calculated every day at 9:00 am and at 1:00 pm during the fire season (1.03 till 30.09) for 60 prognostic zones selected on the basis of stand and climatic conditions. 97% of all annual forest fires occur during the fire season. Surface fires are a significant part of the fires (90%) and occur in forest stands where pine is the dominant species. The purpose of the research was to prepare a new method of forecasting forest fire risk, which would enable a more precise method of evaluation of the risk of an outbreak of fire in relation to the existing and forecast meteorological conditions in forests. The results obtained during testing of this method indicate a high accuracy in forecasting fire risk and a satisfactory precision of formulae for calculating moisture content of pine litter. The assumptions of the new method included: – possibility of determining the actual risk of fire for the given area, being the average for all measurement points located on the terrain equally those in which the moisture content measurement of litter has not been performed, – possibility of forecasting the risk of forest fire for the afternoon in the morning hours of the given day, – possibility of forecasting fire risk for the following day, – forecasting moisture content of litter for the afternoon and of the given day and for the following day, – drawing up a method enabling limitation of operational costs of fire prevention system.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 2; 139-144
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some observations of slime moulds on wood and litter in beech forests
Obserwacje śluzowców na drewnie i ściółce bukowej
Autorzy:
Slusarczyk, D.
Powiązania:
https://bibliotekanauki.pl/articles/67086.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
observation
slime mould
wood
litter
beech forest
Mycetozoa
ecology
nature reserve
Opis:
The results of research into slime moulds in beech forest reserves in Central Poland are presented. Thirty species of slime moulds directly associated with beech wood and beech litter were recorded. Species associated with different decay phases of beech wood and litter were identified.
Artykuł prezentuje dane dotyczące występowania śluzowców w wybranych rezerwatach w Polsce Środkowej, w których buk zwyczajny osiąga północno-wschodnią granicę zasięgu. Przedstawiono listę 30 gatunków śluzowców, które występowały na substracie bukowym, zarówno drewnie jak i ściółce. W pracy przyjęto trójstopniową skalę rozkładu drewna. Wyróżniono: 1 – fazę inicjalną, 2 – optymalną i 3 – finalną kłód, pni i pniaków zalegających w dnie lasu. Na tak określonym substracie przedstawiono gatunki śluzowców. Wśród nich, sześć to taksony nowe dla tego terenu: Fuligo leviderma, Hemitrichia clavata, Collaria arcyrionema (Lamproderma arcyrionema), Physarum leucophaeum, P. notabile, Stemonitis pallida (Seta, Drozdowicz 2004).
Źródło:
Acta Mycologica; 2010, 45, 2
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Above and Below-Ground Decomposition of Leaf Litter in Leucaena leucocaephala Plantation of Federal University of Agriculture, Abeokuta (FUNAAB), Nigeria
Autorzy:
Oladoye, A. O.
Oyebamiji, N. A.
Ayoku, Y. B.
Powiązania:
https://bibliotekanauki.pl/articles/1077278.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Forest plantation
Leucaena leucocaephala
ground level
leaf litter
mass loss
nutrient contents
release pattern
Opis:
A decomposition study was carried out on the leaf litters of Leucaena leucocaephala to determine the rate of decomposition of its leaves with respect to its placement on above or below the ground levels in L. leucocaephala plantations of the Federal University of Agriculture, Abeokuta, Nigeria. In the study, leaf litter were randomly handpicked from the forest floor, of this, 40 g each were weighed into thirty (30) litter bags of 2 mm mesh size in which 15 were randomly placed on the forest floor (above-ground) and the remaining 15 were buried in the soil between 5-10 cm depth (below-ground). Data were analysed using descriptive statistical techniques such as percentage, while inferential statistics (simple linear regression) was used to determine relationships between various nutrient elements and days of decomposition (DOD). We noted that the percentage of mass loss of leaf litter increased with time in days after deposit and was higher (29.93%, 32.43 % and 33.25%, 41.65%) at 80 to 100 days of placement above- and below-ground, respectively. Moreover, the exchangeable basic cations and chemical compositions of litters were not consistent with respect to DOD. Regression analysis of nitrogen (N) and organic carbon (OC) showed that these elements significantly contributed to the high (86 %) overall decomposition of litter (p < 0.05, p < 0.01) below-ground level. It is, therefore, concluded that decomposition of leaf litters occur faster below ground than above ground within the forest plantation.
Źródło:
World News of Natural Sciences; 2019, 23; 211-220
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics, structure and chemistry of litterfall in headwater riparian forest in the area of Middle Pomerania
Autorzy:
Jonczak, J.
Olejniczak, M.
Parzych, A.
Sobisz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/15438.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
litter fall
dynamics
structure
chemistry
nutrient
heavy metal
headwater area
riparian forest
Pomeranian region
Opis:
The following research on plant litterfall mass, dynamics, structure and chemistry was conducted from 2012 to 2014, on a 40- to 86-year-old stand of black alder (Alnus glutinosa) growing in a headwater area of the upper part of the valley of the Kamienna Creek (Middle Pomerania). Litterfall was collected every month with 20 circular traps, dried untill constant weight, divided into fractions, weighed and analyzed. The annual amount of litterfall deposited on soil during the study period ranged from 3482.5 to 4106.9 kg·ha-1, showing a dynamics pattern typical of temperate decidous forests. Leaves constituted the major fraction of litter with share of between 78.0 and 81.6% in its total mass. The contribution (in %) of twigs was 4.9-5.6, flowers 2.8-8.3, fruits 0.2-0.9 and other components 7.6-9.2. The relatively stable environmental conditions of headwater areas and the absence of disrupting factors during the study period were reflected in the low temporal variability of litterfall mass, dynamics and chemical composition of its individual fractions. The average annual pH of litterfall was 4.33-4.57. In general, litter was relatively rich in nitrogen and calcium but poor in phosphorus, potassium and magnesium. The content of Fe, Al and Mn was characteristic for these elements and low when compared to the other macroelements. The low contents of Cu and Zn confirm limited anthropogenic contamination of the investigated ecosystem with these metals. The annual return of the elements to the soil formed a series C>N>Ca>K>Mg>P>Mn>Fe>Al>Zn>Sr>Cu. A relatively large influx to the soil was noticed for nitrogen and calcium. Meanwhile, it was low for potassium, magnesium and phosphorus.
Źródło:
Journal of Elementology; 2016, 21, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
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