Wyniki wyszukiwania

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Drzewo roku 1997 - kasztanowiec cz.II. Najwazniejsze drzewo ozdobne obcego pochodzenia

100%

Czekalski M.

Szkółkarstwo

|

1997

|

nr 2

8-9

2

Obserwacje Guignardia aesculi [Peck] Stew. - grzyba pasozytujacego na lisciach kasztanowca pospolitego [Aesculus hippocastanum L.]

72%

Kalinowska-Kucharska E.

Rocznik Dendrologiczny

|

1998

|

tom 46

93-99

3

Problem z kasztanowcami

72%

Wiech K.

Szkółkarstwo

|

2001

|

nr 1

40-41

4

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Zaburzenia procesu kwitnienia i owocowania Aesculus hippocastanum L. jako efekt żerowania Cameraria ohridella Deschka and Dimić

58%

Franiel I., Woznica P., Orlik H.

Sylwan

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2014

|

tom 158

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nr 01

The paper presents the study on the impact of Cameraria ohridella on the percentage of leaf blade surface infested by insects, the number of functionally male and female flowers, as well as the germination energy of seeds. The research results show that the area of damage to the leaf may not affect the number of flowers, but it causes a decrease in the number of functionally female flowers as well as a decrease in fruit number and weight. Adhesive tapes with pheromone trap could help prevent greater leaf damage and lessened the disruption of the flowering and fructification processes.

5

Określanie wieku niektórych gatunków drzew ulicznych na podstawie wybranych parametrów dendrometrycznych

58%

Lukaszkiewicz J.

Rocznik Polskiego Towarzystwa Dendrologicznego

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2010

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tom 58

Trees are an important component of the urban landscape. Their aesthetics qualities and especially a positive impact on the environment translate into increased life quality of urban communities. From this point of view the aspect of trees’ growth in urban areas is an object of intensive research all over the world. The better the knowledge of factors and mechanisms affecting growth and development trees in urban areas, the more accurate is in example monetary evaluation of trees value and their effects on the environment (value of the retained stormwater, produced oxygen, assimilated CO2, retained pollutions of water, soil and air, reduction of heat islands, etc.). Research on the correlation of tree age, environmental factors and the growth of dendrometric parameters serve as a starting point for developing various computer programs enabling one to calculate the economic effect of trees on savings and expenditure of individual households, towns and cities. Results of tree growth research prove that savings resulting from the presence of trees in towns can be more than three times the cost of tree maintenance. Trees growth is with no doubt dependent on their age. This paper evaluates the possibility of determining tree age based simultaneously on dbh (diameter at breast height 1,3 m) and total tree height, using species most commonly growing along streets in Warsaw: common lime (Tilia cordata Mill.), common ash (Fraxinus excelsior L.) and horse chestnut (Aesculus hippocastanum L.). The first step of research was the identification and measuring of age homogenous trees populations growing in similar conditions (street side trees in Warsaw, excluding city’s downtown) for which planting ages were known (mainly from archive data). Next, multifactoral regression models were developed describing the growth of both parameters (dbh and height) over time. In the majority of cases, plotting tree age against diameter and height yielded a regression coefficient r value and determination coefficient r2 value above 0.9. For graphical interpretation of elaborated multifactoral model nomograms were applied. This kind of graph explains tree age based on both dbh and height of trees. Another aspect of the research was a verification. The resulting model was applied to unrelated groups of trees of known age. Mean bias values were established for each model. The difference between the actual age and mean age calculated with the model was less than ±15%. Presented model, although not meant for application to individual trees might be useful to determine the age of trees populations growing along streets and roads.

6

Drzewo roku 1997 - kasztanowiec cz.I

58%

Czekalski M.

Szkółkarstwo

|

1997

|

nr 1

21-23

7

Drzewa jak kwiatki.

58%

Lukasz J., Dlugosz H., Sternicki M.

Murator

|

1995

|

nr 09

100-104

8

Drzewo roku 1997 - kasztanowiec cz.IV: Rozmnazanie wegetatywne

58%

Czekalski M.

Szkółkarstwo

|

1997

|

nr 4

22-23

9

Ratujmy kasztanowce

58%

Przegląd Komunalny

|

2004

|

nr 05

9

10

Ukryta moc roślin

44%

Gawrys A.

Kwietnik

|

2011

|

nr 08

11

Drzewo roku 1997 - kasztanowiec cz.III: Rozmnazanie z nasion

44%

Czekalski M.

Szkółkarstwo

|

1997

|

nr 3

9

12

Taksony z rodzaju Aesculus L. na terenie Wrocławia

30%

Szopinska E.

Acta Botanica Silesiaca

|

2005

|

tom 02

In the light of contemporary issues of urban development and the natural environment deterioration, a research concerning taxonomic diversity and the state of dendroflora preservation are the basis for any further activities in the fields of shaping and preservation of urban green areas.

Ograniczanie wyników

Drzewo roku 1997 - kasztanowiec cz.II. Najwazniejsze drzewo ozdobne obcego pochodzenia

Obserwacje Guignardia aesculi [Peck] Stew. - grzyba pasozytujacego na lisciach kasztanowca pospolitego [Aesculus hippocastanum L.]

Problem z kasztanowcami

Zaburzenia procesu kwitnienia i owocowania Aesculus hippocastanum L. jako efekt żerowania Cameraria ohridella Deschka and Dimić

Określanie wieku niektórych gatunków drzew ulicznych na podstawie wybranych parametrów dendrometrycznych

Drzewo roku 1997 - kasztanowiec cz.I

Drzewa jak kwiatki.

Drzewo roku 1997 - kasztanowiec cz.IV: Rozmnazanie wegetatywne

Ratujmy kasztanowce

Ukryta moc roślin

Drzewo roku 1997 - kasztanowiec cz.III: Rozmnazanie z nasion

Taksony z rodzaju Aesculus L. na terenie Wrocławia