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Wyszukujesz frazę "biodiversity conservation" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Alternatywne koszty ustanowienia rezerwatów przyrody w lasach na przykładzie wybranych nadleśnictw województwa mazowieckiego
Opportunity costs of establishing nature reserves in selected forest districts of the Mazowieckie Province
Autorzy:
Kaliszewski, A.
Młynarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/1315962.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
woj.mazowieckie
ochrona przyrody
nadlesnictwa
Nadlesnictwo Celestynow
Nadlesnictwo Plonsk
Nadlesnictwo Zwolen
Nadlesnictwo Grojec
rezerwaty przyrody
ustanowienie rezerwatu
koszty straconych korzysci
utrata miejsc pracy
zmniejszenie przychodow
biodiversity conservation
public forests
local labour market
tax concessions
Opis:
The article presents the results of research on the opportunity costs related to establishing nature reserves in four randomly-selected forest districts located in the Mazowieckie Province: Celestynów, Grójec, P³oñsk and Zwoleń. Our analysis included calculation of profits forgone by forest districts due to the cessation of timber harvesting in nature reserves and an estimation of work places lost as a result of introduction of new limitations, as well as the expenses incurred by municipalities related to their establishment of forest tax concessions in nature reserves. The establishment of nature reserves incurred losses related to timber harvest of about 246 thousand m3 during the period of 10 years, which is equivalent to between 4.1% and 19.8% of the planned timber harvest stated in the forest management plans of the studied forest districts. Total opportunity costs were equal to 25.5-27.2 million PLN during these 10 years or 1502-1605 PLN/ha of nature reserve annually. Annual opportunity costs calculated per unit of forest area were equal to 56-60 PLN/ha. The estimated loss in work places was 98.8 working days annually per 1000 ha of forest area in forest districts. Total expenses incurred by municipalities related to establishment of forest tax concessions in nature reserves reached about 18.1 thousand PLN in 2011. The research results show that the economic and social costs of nature protection activities are concentrated in their places of their origin. Those costs are felt the most by the owners of the affected forests and local communities. We recommend that possibilities are explored for the introduction of instruments to allow the mitigation of negative effects resulting from restrictions in forest use. Restructuring of forest and nature protection policy, to take into account the interests of all stakeholders would provide an improved model for the use of these forests.
Źródło:
Leśne Prace Badawcze; 2014, 75, 1; 89-99
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternatywne koszty ustanowienia stref ochrony gatunkowej ptaków w lasach na przykładzie wybranych nadleśnictw
Opportunity costs of establishing bird protection zones in selected forest districts
Autorzy:
Kaliszewski, A.
Młynarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/989768.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ochrona przyrody
gniazda ptasie
strefa ochronna gniazd
ustanowienie strefy ochronnej
koszty alternatywne
koszty straconych korzysci
lasy gospodarcze
zaprzestanie uzytkowania
utrata miejsc pracy
zmniejszenie przychodow
Nadlesnictwo Grojec
Nadlesnictwo Zwolen
biodiversity conservation
public forests
local labour market
economic loss
Opis:
The article presents the results of research on the opportunity costs related to establishment of perennial bird protection zones in forests located in two randomly selected forest districts of the Mazowieckie Province: Grójec and Zwoleń (Regional Directorate of the State Forests in Radom). The analysis included calculation of profits lost by forest districts due to termination of timber harvest in bird protection zones and also estimation of work places lost as a result of introduction of new limitations (social costs). The analysis was conducted based on the assumption that currently protected tree stands within protection zones would have been managed in a regular manner, i.e. that pre−commercial and commercial thinning, as well as final cuttings would have taken place and that they would have been a source of income to the examined forest districts. Based on the characteristics of tree stands within protection zones derived from the forest management plans for the forest districts at stake, potential thinning and cutting volumes for a 10−year period as well as potential incomes from timber sale were determined. The calculated timber volume was also used for estimating labour intensity of timber harvesting and skidding. Establishment of perennial bird protection zones generated losses in timber harvest in the amount of about 24.6 thousand m³ during the period of 10 years, which equals to about 1.7% (Grójec) and 2.2% (Zwoleń) of planned timber harvest amounts stated in the forest management plans of the studied forest districts. Total opportunity costs were equal to 3478 thousand PLN during 10 years or 1313 PLN/ha of protection zone annually. Annual opportunity costs calculated per unit of forest area of the forest districts were equal to 11.56 PLN/ha. The estimated loss in work places was 0.85 full−time jobs annually per every 100 ha of perennial bird protection zones. Results show that economic and social costs of nature protection activities concentrate in places of their origin. Those costs are felt the most by owners of affected forests and local communities. Exploration and introduction of instruments allowing mitigation of negative effects resulting from restrictions in forest use are therefore recommended.
Źródło:
Sylwan; 2015, 159, 07; 558-564
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy ograniczanie gradacji kornika drukarza Ips typographus (L.) w Puszczy Białowieskiej jest możliwe i potrzebne?
Is it possible and necessary to control European spruce bark beetle Ips typographus (L.) outbreak in the Bialowieza Forest?
Autorzy:
Hilszczański, J.
Starzyk, J.R.
Powiązania:
https://bibliotekanauki.pl/articles/1293603.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
lasy
Puszcza Bialowieska
szkodniki roslin
kornik drukarz
Ips typographus
wystepowanie
gradacja
ograniczanie wystepowania
ochrona lasu
forest protection
nature conservation
sanitation cutting
biodiversity
Opis:
In response to the information published in “Forest Research Papers” (vol. 77(4), 2016), regarding the problem of the European spruce bark beetle Ips typographus (L.) in the Białowieża Forest, we present our viewpoint on this issue. The role of the European spruce bark beetle in the Białowieża Forest is discussed based on experience gained in Europe’s forests. We present the effects of I. typographus outbreaks on forest biodiversity as well as outbreak mitigation in the context of the processes taking place in semi natural forests.
Źródło:
Leśne Prace Badawcze; 2017, 78, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany w runie żyznej buczyny niżowej Galio odorati-Fagetum w rezerwacie Wronie w latach 1967-2005
Changes in herb layer vegetation in Pomeranian fertile beech forest Galio odorati-Fagetum in Wronie nature reserve in 1967-2005
Autorzy:
Puchałka, R.
Cyzman, W.
Powiązania:
https://bibliotekanauki.pl/articles/989805.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
rezerwaty przyrody
rezerwat Wronie
drzewostany bukowe
zbiorowiska roslinne
zyzna buczyna nizowa
zespol Galio odorati-Fagetum
runo lesne
roznorodnosc gatunkowa
nature conservation
biodiversity
beech forest
ellenberg's values
northern poland
Opis:
The Wronie nature reserve was established in 1978 for conservation of Pomeranian fertile beech forest Galio odorati−Fagetum (=Melico−Fagetum) outside of the natural range of European beech Fagus sylvatica. Reserve is located in Golub−Dobrzyń Forest District (53°18'39.52"N; 18°54'3.89"E; N Poland). The aim of our study was to determine the influence of passive protection for beech forest herb layer biodiversity. For our research, we used four series of phytosociological relevés made in 1967, 1984, 1995 and 2005. To investigate changes in habitat conditions we used Ellenberg indicator values. Differences between years were analysed with ANOVA and Tukey test. In subsequent years, the frequency and cover of non−forest species, mainly from Epilobietea, Artemisietea, Trifolio−Geranietea and Molinio−Arrhenatheretea classes increased. This is caused by the increase in light availability, as result of disturbances in the tree stands (windthrow, oak decline, insect gradation). Light is the only Ellenberg coefficient that has significantly changed during 38 years (fig., tab. 2). Increase of light availability had no effect on biodiversity of forest herb species from Querco−Fagetea class. In comparison, with other studies in similar forest communities, our results suggests that passive protection might give different effects on biodiversity in similar forest communities, depending on tree stand dynamics.
Źródło:
Sylwan; 2015, 159, 06; 443-451
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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