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Wyszukujesz frazę "central forest reserve" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Population structure and regeneration status of most abundant medicinal woody plants in Mabira Central Forest Reserve management zones
Autorzy:
Tumuhe, C.L.
Mwine, R.N.
Manana, S.
Powiązania:
https://bibliotekanauki.pl/articles/2049704.pdf
Data publikacji:
2018
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
woody plant
medicinal plant
population structure
regeneration
breast height diameter
forest reserve
Mabira Forest Reserve
management zone
dbh
central forest reserve
medicinal plants
Opis:
In the rural areas 90% of the Ugandans use plants for their medicinal uses. Communities around Mabira Central Forest Reserve (CFR) harvest plants for medicinal purposes. The increased uptake of herbal medicine is a threat to the abundance and health of medicinal trees. This research determined the species population structure and regeneration status of most abundant woody medicinal plant species in Mabira CFR. Sixty nested plots measuring 20×10 m were established adjacent to transects, 20 plots per management zone. The species sampled were identified, counted, and their diameter at breast height (dbh) taken. Their density was computed. Using the dbh classes and density data, dbh distributions were established. Using Kruskal- Wallis test we ascertained if significant differences existed in medicinal plant species densities for size classes in the 3 zones. Using linear regression we got relationship between plant density and dbh. A regression analysis of In (Ni+1) against di was made to cater for the zero values of abundance per hectare. The population had a steep negative slope, meaning that it is stable and naturally replacing itself. There was a general decline in species density with dbh. The <5 dbh size class had the biggest number of individuals per hectare in the production zone. The production zone had a high regeneration potential due to most individuals being in the smallest size class. Density had a negative linear relationship with dbh. There was a significant relationship between dbh and density of species. The tree species sampled were generally naturally regenerating.
Źródło:
Environment, Earth and Ecology; 2018, 2, 1; 6-11
2543-9774
2451-4225
Pojawia się w:
Environment, Earth and Ecology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The last hundred years of land use history in the southern part of Yaldai Hills (European Russia): reconstruction by pollen and historical data
Autorzy:
Novenko, Elena
Shilov, Pavel
Khitrov, Dmitry
Kozlov, Daniil
Powiązania:
https://bibliotekanauki.pl/articles/2026040.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pollen analysis
peatland
land use history
the Central Forest State Reserve
Opis:
The last one hundred years of land use history in the southern part of Valdai Hills (European Russia) were reconstructed on the base of high resolution pollen data from the peat monolith taken from the Central Forest State Reserve supplementing with historical records derived from maps of the General Land Survey of the 18th and 19th centuries and satellite images. According to the created age model provided by dating using radio-nuclides 210Pb and 137Cs, pollen data of the peat monolith allow us to reconstruct vegetation dynamics during the last one hundred years with high time resolution. The obtained data showed that, despite the location of the studied peatland in the center of the forest area and rather far away from possible croplands and hayfields, the pollen values of plants – anthropogenic indicators (Secale sereale, Centaurea cyanus, Plantago, Rumex, etc.) and micro-charcoal concentration are relatively high in the period since the beginning of the 20th century to the 1970s, especially in the peat horizon formed in the 1950s. In the late 1970s – the early 1980s when the pollen values of cereals gradually diminished in assemblages, the quantity of pollen of other anthropogenic indicators were also significantly reduced, which reflects the overall processes of the agriculture decline in the forest zone of the former USSR.
Źródło:
Studia Quaternaria; 2017, 34; 73-81
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liverworts of the 'Murowaniec' Nature Reserve in Central Poland
Watrobowce Rezerwatu Przyrody 'Murowaniec' w Polsce Srodkowej
Autorzy:
Gorski, P.
Powiązania:
https://bibliotekanauki.pl/articles/878317.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
nature reserve
Abietetum polonicum
Polska
botany
liverwort
Murowaniec Nature Reserve
Central Poland
forest plant community
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2005, 08
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species and ecological diversity of bryophytes occurring on midforest roads in some forest nature reserves in Central Poland
Autorzy:
Wolski, G.J.
Fudali, E.
Powiązania:
https://bibliotekanauki.pl/articles/878311.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
bryophyte
species diversity
ecological diversity
synanthropic community
occurrence
forest nature reserve
Central Poland
forest road
Opis:
The paper presents socio-ecological and ecological characterisation of 72 bryophyte species found in the years 2008-2012 on midforest roads passing through nine nature reserves situated in the Łódź region. Nine species occurred excl usively in this habitat. Most of the species noted (63%) were forest bryophytes occurring also inside the forest phytocoenoses studied, they constituted 95.5% of all the records. The non-forest species show diff erent socio-ecological relations: some of them occur typically on meadows or in grassy forest ecotones, others – in fens or bogs but there are also some pioneer bryophytes colonizing initial sites, both of natural and anthropogenic character. They diff er from the forest species occurring on midforest roads in their ecological demands regarding the habitat reaction (presence of subneutral species) and light (higher participation of heliophytes). Nine of them (13%) are considered to be synanthropic bryophytes. Details of the species occurrence are provided.
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2013, 17
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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