Wyniki wyszukiwania - AGRO

1

Inwentaryzacja stopnia uszkodzen drzewostanow w parkach narodowych

100%

Borecki T., Wojcik R., Miscicki S., Nowakowska J.

Parki Narodowe

|

1996

|

nr 1

20-21

2

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Kryteria oceny uszkodzenia drzewostanów bukowych

100%

Dmyterko E.

Sylwan

|

1999

|

tom 143

|

nr 09

31-45

3

Użytkowanie lasu a ochrona środowiska leśnego

88%

Kaminski E.

Sylwan

|

1988

|

tom 132

|

nr 10

4

Ocena stanu uszkodzeń drzewostanów Nadleśnictwa Krotoszyn

88%

Borecki T., Wojcik R.

Sylwan

|

1996

|

tom 140

|

nr 07

9-15

5

Inwentaryzacja stanu uszkodzen drzewostanow parkow narodowych

75%

Borecki T., Wojcik R., Miscicki S., Nowakowska J.

Parki Narodowe i Rezerwaty Przyrody

|

1995

|

tom 14

|

nr 4

3-22

6

Dynamika poskozeni reliktnich boru v CHKO Broumovsko

75%

Vacek S., Podrazsky V.

Szczeliniec

|

1996

159-165

7

Metodyka okreslania stopnia uszkodzenia drzewostanow sosnowych przez imisje przemyslowe

75%

Dmyterko E.

Prace Instytutu Badawczego Leśnictwa. Seria A

|

1994

|

nr 778-782

127-155

8

Stochastyczny model określania miąższości złomów, wywrotów i posuszu

75%

Bruchwald A., Dmyterko E.

Sylwan

|

2014

|

tom 158

|

nr 04

The most recent version of the wind damage risk model was published in 2012. The model is based on eleven stand characteristics of which stand damage that occurred in the last decade is among the most important ones. It is expressed as the volume of wood obtained from wind−broken and wind−thrown trees as well as of deadwood. Not taking this feature into consideration would undermine the value of this damage risk factor. In the study, the material contained in the database of the State Forests Information System was used to develop a model for calculating the volume of wood obtained from wind−broken and wind−thrown trees as well as of deadwood. This allowed to apply the stand damage risk model to determine, inter alia, the risk of damage in a multi−variant forecast of timber resources.

9

Krajowy program monitoringu stanu lasu w Polsce

75%

Zornaczuk A.

Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej

|

2006

|

tom 08

|

nr 4[14]

41-50

10

Regionalne zróżnicowanie ryzyka wystąpienia uszkodzeń drzewostanów w Polsce

75%

Orzechowski M., Wojcik R.

Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej

|

2014

|

tom 16

|

nr 2A[39]

11

Wplyw pozyskiwania drewna na uszkodzenia lasu w poznych trzebiezach drzewostanow sosnowych

75%

Suwala M.

Notatnik Naukowy Instytutu Badawczego Leśnictwa

|

1997

|

nr 2

1-4

12

Weryfikacja metod określania uszkodzenia drzewostanów dębowych

75%

Dmyterko E., Bruchwald A.

Sylwan

|

1998

|

tom 142

|

nr 12

11-21

13

Zagrożenie lasów Polski na podstawie modelu ryzyka uszkodzenia drzewostanu przez wiatr

75%

Dmyterko E., Mionskowski M., Bruchwald A.

Sylwan

|

2015

|

tom 159

|

nr 05

On the basis of the wind damage risk model for forests using the data of the State Forests Information System, the stand damage risk factor Wr for each of the 430 forest districts in Poland and the threat measure Ms for a given forest district were determined. The measure of threat to forest Ms for a forest district is a methodical basis for assessing the potential damage to forests in Poland. Its value ranges from 8.1% for the Brzózka Forest District to 48.9% for the Ujsoły Forest District (fig. 1), giving the average value of 24.6% and standard deviation of 7.03%. The measure Ms was the basis for differentiating the levels of threat of wind damage to forest for forest districts. Level 1 (Ms 10%) indicates low threat, level 2 (10%Ms 20%) – elevated threat, level 3 (20%Ms 30%) – moderate threat, level 4 (30%Ms 40%) – high threat, level 5 (Ms 40%) – very high threat. Low threat to forests was found only in two forest districts located in the western part of the country. 113 forest districts, which form large concentrations particularly in western and central Poland, are exposed to an elevated threat. Most forest districts (233) are classified to a group of moderate threat. They are located across the country and are mostly concentrated in the northern and southern regions of Poland. 71 forest districts exposed to high threat are concentrated in the south of Poland in the Carpathians and the Sudetes, with scattered presence in the north of the country. Most of the 11 forest districts with a very high threat to forests are located in the mountains (tab., fig. 1). For the forest districts with a particularly high and very high threat, new silvicultural procedures and the basis for decision making in the field of forest management should be developed to reduce the risk of damage to forest.

14

Wskazniki uszkodzenia koron drzew okreslane metoda drzewostanowa w okresowej ocenie stanu lasu

75%

Jaszczak R.

Sylwan

|

2000

|

tom 144

|

nr 10

69-81

15

Urządzanie i monitoring lasu a ustalanie stref uszkodzenia lasu i stopni uszkodzenia drzewostanów

75%

Golojuch P., Beker C.

Sylwan

|

2015

|

tom 159

|

nr 01

In years 1970−2002, in Poland forest damage zones were distinguished within the framework of forest management works. Since 2003 degrees of stand damage have been determined. This study presents basic characteristics of the methods employed for these purposes concerning the necessity to elaborate a new method of determination of degrees of stand damage. The establishment of forest damage zones and degrees of stand damage cannot be treated as one of the forms of monitoring because in order to determine their range, no observations on the permanent plots and – within their confines – on the same sample trees were and are carried out. Over the time, evaluation criteria or/and ways of establishment of the extent of damages have been undergoing considerable and significant methodological changes and modifications. In terms of dynamically altering quantitative and qualitative impact of different factors affecting forest environment, 10 years period of observation repeatability is far too long to use this information as an indicator of occurring changes. In practice, it was and it still is impossible to determine objectively trends and directions of changes taking place in a given object, which is one of the objectives of forest monitoring. The concept of damage zone should be understood not only as an area of grouping the stands of the same or similar damage, but, equally importantly, as those which happen to be under the influence of the same factor exerting its influence at the same level. Therefore, when determining the range of zones, the following three actions should be taken into consideration simultaneously: complex crown evaluation, dendrometric measurements and monitoring of the effect of the causative agent. In order to trace the trends of the changes on the study plots, the same sample trees must be subjected to evaluations and measurements. From the point of view of the time perspective, exam− inations should be carried out every 5 years (assessment of the crown condition and dendrometric measurements) or on a continuous basis (monitoring of the effect of the causative agent) irrespective of the forest taxation. It is also advisable to consider possible use of contemporary remote sensing techniques to determine the range of zones and degrees of damage, which preliminary can be used to establish the range, intensity and kind of the damages.

16

Zagospodarowanie i przebudowa swierczyn uszkodzonych przez imisje przemyslowe w Sudetach

75%

Ceitel J., Szymanski S., Zientarski J.

Postępy Techniki w Leśnictwie

|

1995

|

tom 56

15-20

17

Drzewostanowa metoda okreslania uszkodzenia jodly

75%

Dmyterko E., Bruchwald A.

Sylwan

|

2008

|

tom 152

|

nr 05

26-33

18

Stopień uszkodzenia przez jeleniowate drzewostanów bukowych pierwszej klasy wieku na terenie Nadleśnictwa Leśny Dwór

75%

Gorecki T., Matusiak T., Zefert L.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

|

2016

|

tom 15

|

nr 2

19

Ustalenie stref uszkodzenia lasu w Polsce metoda drzewostanowa w warunkach trwale zrownowazonej gospodarki lesnej

75%

Jaszczak R.

Roczniki Akademii Rolniczej w Poznaniu. Leśnictwo

|

2001

|

tom 39

121-126

20

Degradacja lasów masywu Skrzycznego /Beskid Śląski/ i jej związek z orografią terenu

75%

Troll M.

Sylwan

|

1995

|

tom 139

|

nr 07

87-92

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