Temat: rozklad przestrzenny - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Przestrzenny rozkład wilgotności gruntu w obszarze przyległym do wylotu urządzeń odwadniających drogi leśne
Spatial distribution of soil moisture in the area adjacent to the outlet of forest roads drainage devices
Autorzy:: Gołąb, J.
Badach, E.
Słowik-Opoka, E.
Powiązania:: https://bibliotekanauki.pl/articles/989490.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
inzynieria lesna
drogi lesne
urzadzenia odwadniajace
stoki
wilgotnosc gruntu
rozklad wilgotnosci
rozklad przestrzenny
osuwiska
mountain forests
forest roads
drainage devices
landslides
soil moisture
Opis:: Transformation of the natural environment of human life may have different speed, depending on the number of conditions, especially the climate. There is a long−term transformation, but also the sudden changes, often having for humans the nature of disaster. An example of sudden and undesirable changes in the environment are observed in form of movements of soil on the slopes of the mountain. One of the environmental factors that determine the slope stability is the current soil moisture. Its sudden increase caused by heavy rain or spring thaw can significantly change soil physical conditions and triger landslides. Water saturation may also occur in soils of these areas, to which water from the road drainage devices flows. The aim of the study is to determine the spatial distribution of soil moisture in the outlet of the drainage facilities for forest roads in the context of changes in selected soil characteristics affecting the possibility of landslides. We selected two culverts and two open top culverts that drain the forest road in Gorce National Park. The most important for the observations was to determine the spatial distribution of soil moisture and soil moisture differences in selected locations of an outlet of the road drainage facilities in relation to the place of outlet and the unit drain line. In the analysis of measurement results, there was no significant difference between the average humidity clustered according to ‘position' and by the ‘line'. The significance of this was obtained for the average moisture grouped according to ‘depth'. This can be explained by the impermeability of land and a large decrease in the slopes in the area of research. In general, rather small soil moisture fluctuations, despite the variability of rainfall, in conjunction with significant fraction of skeleton particles, do not create conditions conducive to the formation of landslides.
Źródło:: Sylwan; 2016, 160, 10; 861-870
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Przestrzenny rozkład opadu cetyny oraz przyrostu pierśnicy w drzewostanach sosnowych rosnących po likwidacji ogniska reprodukcji cetyńców Tomicus piniperda (L.) i T. minor (Hart.)
Spatial pattern of insect−induced needle drop and dbh increment in pine stands before and after liquidation of sawmill and landing
Autorzy:: Borkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/1026407.pdf
Data publikacji:: 2003
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: drzewostany sosnowe
rozklad przestrzenny
Tomicus minor
Tomicus piniperda
szkodniki roslin
cetyniec mniejszy
cetyniec wiekszy
lesnictwo
piersnice drzew
ekologia lasu
opad cetyny
przyrost drzew
ecology
tomicus piniperda
t. minor
dbh increment
Opis:: The studies were conducted in the years 1992−1996 and 2001−2002 in the Węgle Forest Sub−district, Zagnańsk Forest District. The aim of the studies was to compare the spatial pattern of needle drop caused by Tomicus sp. and the dbh increment in pine stands before and after the liquidation of the sawmill and timber landing. Eight zones at different distances from the sawmill were distinguished: I – edge zone, II – 100 m, III – 300 m, IV – 500 m, V – 700 m, VI – 900 m, VII – 1100 m and VIII – 2000 m (control). The needle drops were collected from each zones using under−canopy plots of 4 m². in size and drilling into trees at the dbh using a Suunto increment borer. Research results confirmed the significant effect of the reproduction centres of Tomicus sp. on the losses in tree increments. The higher significant values of the needle drop during the functioning of the timber landing were related to the lower values of the dbh increment, and with the low needle drop following the liquidation of the landing the increment values were levelled in first zones.
Źródło:: Sylwan; 2003, 147, 06; 87-92
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki