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Wyszukujesz frazę "agricultural landscape" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Kształtowanie krajobrazu rolniczego a polityka leśna państwa
The management of agricultural landscape and the national policy on forests
Autorzy:
Ryszkowski, L.
Bałazy, S.
Powiązania:
https://bibliotekanauki.pl/articles/1178278.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
polityka lesna
krajobraz rolniczy
Polska
zadrzewienia
ksztaltowanie krajobrazu
agricultural landscape management
forest policy
augmentation of forest cover
afforestation
mid−field woodlots
biogeochemical barriers
sustainable development
integration
Opis:
The National Policy on Forests and the National Programme for the Augmentation of Forest Cover indicate regional needs, possibilities, legal and financial principles of afforestations as the most important elements of the improvement and maintenance of a good state of the country's environment. The documents put emphasis on the need for the establishment and restoration of afforestations between fields, however, neither the guidelines for their legal and administrative status nor sources of financing have been indicated. In many regions of the country, the large−scale afforestation are almost impossible, because high−quality soils are under agricultural production and the local communities lack the alternative means of living. Thus, the mid−field afforestations of a linear or small−surface type could be the only elements differentiating the landscape structure and acting as biogeochemical barriers. Their network perform the same complementary protective functions as forests or other semi−natural ecosystems. With a view to economising expenditures and intensifying effects aiming at the environment protection it is necessary to closely integrate the countryside environmental programmes including the establishment of biogeochemical barriers and afforestations. The principles of such integration and co−ordination of pro−ecological programmes of the landscape structure management should be laid down under a separate research project.
Źródło:
Sylwan; 2003, 147, 10; 82-90
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lesistość, wielkość pól i występowanie kukurydzy a poziom i tempo wzrostu populacji dzików w Polsce w latach 1999-2014
Level and growth rate of wild boar populations in relation to forest cover, crop field size and maize occurrence in Poland in the years 1999-2014
Autorzy:
Budny, M.
Panek, M.
Powiązania:
https://bibliotekanauki.pl/articles/989456.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lowiectwo
zwierzeta lowne
dzik
Sus scrofa
populacje zwierzat
wzrost populacji
czynniki siedliska
obwody lowieckie
lesistosc
wielkosc gospodarstw
pola uprawne
kukurydza
sus scrofa
hunting bag
agricultural landscape
habitats
Opis:
The number of wild boars considerably increased in Poland at the beginning of the 21st century. We tested hypotheses that both the level of wild boar populations and rate of the increase in their numbers in Poland in the years 1999−2014 were dependent on some landscape factors, i.e. forest cover, crop field size and maize occurrence. Hunting bag was used as an index of wild boar abundance. The mean hunting bag of this species in the initial and final part of the study period was positively related to the forest cover and the mean size of farms (as an index of crop field size). In the final years also the occurrence of maize showed a positive effect (tab.). However, the index of wild boar bag growth rate decreased with the forest cover and the farm size. Higher increase in wild boar abundance occurred in regions characterized by lower forests share and fragmented crop fields, where the density of investigated species were lower than in regions with the mosaic of forests and large crop fields. The occurrence of maize significantly affected the growth rate index only in north−eastern part of the country (fig.). Our analysis showed that some evolution in wild boar – landscape relations took place in the recent period. Such changes may lead to an increase in conflicts with agricultural economy caused by this species.
Źródło:
Sylwan; 2016, 160, 12; 1020-1026
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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