Wyniki wyszukiwania

1

Natural trunk rooting and root suckers of pear tree Pyrus x amphigenea Domin ex Dostalek

100%

Czekalski M., Antkowiak W.

Acta Scientiarum Polonorum. Biologia

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2009

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tom 09

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nr 1-4

2

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Relationships between some soil properties and growth indexes in plum and apple trees within the hilly regions of Romania

100%

Paltineanu C., Chitu E., Tanasescu N., Moldoveanu D., Prefac Z.

International Agrophysics

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2003

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tom 17

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nr 4

3

The effect of the 'Northstar' interstem on the growth, yielding and fruit quality of five sweet cherry cultivars

100%

Rozpara E., Grzyb Z. S.

Journal of Fruit and Ornamental Plant Research

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2006

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tom 14

4

Variation in transverse section area of pine tracheid walls [Pinus sylvestris L.]

100%

Fabisiak E., Helinska-Raczkowska L.

Folia Forestalia Polonica. Series B - Drzewnictwo

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1992

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tom 23

5

Different responses of the radial growth of conifer species to increasing temperature along altitude gradient: Pinus tabulaeformis in the Helan Mountains (Northwestern China)

84%

Zhang L., Jiang Y., Zhao S., Dong M., Chen H. Y. H., Kang X.

Polish Journal of Ecology

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2016

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tom 64

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nr 4

Linking the response of tree growth to global warming is a key to fully appreciating the impact of climate change on forests. To examine the impacts of temperature and precipitation on tree growth, we studied the radial growth of Pinus tabulaeformis along an altitude gradient from 2032 m a.s.l. to 2361 m a.s.l. on the Helan Mountains, which is almost the northwestern limit of P. tabulaeformis distribution in China. The results showed that, radial growth of P. tabulaeformis decreased significantly (P <0.05) at the low altitude (2032 m a.s.l.) and remained almost steady at the middle and high altitude (2200 m a.s.l. and 2361 m a.s.l.) during the past decades, which was attributed to different climate-radial growth relationships at different altitudes. Total precipitation from the previous July to the current June was an important and effective climatic factor for radial growth at all altitudes. Radial growth was negatively correlated with the mean temperature of the current March at the low altitude and was positively and negatively correlated with the mean temperature of the previous October and the current July at the high altitude, respectively. Increasing temperature of the March under the context of global warming was the main reason for growth reduction at the low altitude. Radial growth at the middle and high altitudes didn't suffer from global warming. It was inferred that conifers at low altitudes of the species' dry distribution limit were more vulnerable to global warming. To cope with possible intensified drought in the growing season and growth reduction in the future, thinning and afforestation should be carried out in the forests, especially at low altitudes.

6

How can we propagate the Metasequoia glyptostroboides Hu et Cheng?

84%

Kolasinski M.

Electronic Journal of Polish Agricultural Universities. Series: Horticulture

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2012

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tom 15

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nr 2

7

Eleven year evaluation of American (Geneva) and Polish rootstocks with "Golden Delicious Reinders" apple in Poland

84%

Czynczyk A., Bielicki P.

Journal of Fruit and Ornamental Plant Research

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2012

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tom 20

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nr 2

8

Growth of trees used in reforestation of a Northern slope of the external spoil bank of the "Belchatow" Brown Coal Mine

84%

Pajak M., Forgiel M., Krzaklewski W.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2004

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tom 07

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nr 2

9

Edge effects on tree growth and species diversity in forests of different types and ages

84%

Li J., Zhao C., Peng Y., Hu Y., Yuan X.

Polish Journal of Ecology

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2018

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tom 66

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nr 3

Edge to interior gradients in forest ecosystems can influence the species composition and community structure as a result of variations in micro-environment. In this study, the edge effects on stand productivity and plant species diversity were investigated in two adjacent types of forests in central-southern China: Chinese fir adjacent with pine forests and Chinese fir adjacent with broad-leaved forests. A total of 48 sample plots for overstory and 240 sample quadrates for understory in different stand ages were set up. The tree growth parameters were measured in the overstory while the plant species diversity was measured in both overstory and understory of the examined forests. The results showed that DBH (tree diameter at the breast height), tree height and stand volume in overstory increased from the central areas (CA) of forests to the edge areas (EA), and the plant species richness and diversity in understory were greater in EA than in CA. The edge effect was greater in Chinese fir paired with broad-leaved forests than in Chinese fir paired with pine forests. The edge effect decreased in an order as young aged stands > middle aged stands > mature aged stands in the studied forests. The changes in tree growth and species diversity in the edge area compared to the interior were mainly attributed to the alteration of micro-environmental factors such as light density, temperature and moisture. Our results suggest increasing forest productivity and plant species diversity could be achieved by making more edges in the forests.

10

Allometric stability indexes of stands growing on former farmland soils

84%

Jelonek T., Jakubowski M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2012

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tom 78

11

Assessment of growth and cropping of plum trees grafted on Wangenheim Prune rootstock and originated from in vitro

84%

Faber T., Lech W., Malodobry M., Dziedzic E.

Journal of Fruit and Ornamental Plant Research

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2002

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tom 10

12

Growth, yield and fruit quality of Valor plum trees grafted on different rootstocks - preliminary results

84%

Sitarek M., Grzyb Z. S., Kozinski B.

Journal of Fruit and Ornamental Plant Research

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1999

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tom 07

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nr 4

13

Effect of the pest Marchalina hellenica Gennadius [Homoptera, Margarodidae] on the growth parameters of Pinus brutia Ten. in Mugla Region [Turkey]

84%

Yesil A., Gurkan B., Saracoglu O., Zengin H.

Polish Journal of Ecology

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2005

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tom 53

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nr 3

Marchalina hellenica Gennadius is a common pest prevalent in Pinus brutia Ten. forests in Muğla province of Mediterranean Region of Turkey (28˚20’03”E; 37˚12’18”N). The pest is known to suck sap from a number of pine tree species, especially Pinus brutia. The goal of this research is to determine whether the pest has a negative impact on the volume increments of Pinus brutia trees and forests. Two areas with identical site conditions are selected for study: one non-infested and one infested with Marchalina hellenica. The effects of site quality and age on the sampled trees have been eliminated. The diameter growth at breast height, basal area (the cross-sectional area of a tree at breast height) and the increment of tree volume are determined separately for both study areas. A t-test applied to volume increments of both infested and noninfested trees of all ages proves that infestation causes significant negative impacts on trees between the ages of 40 and 80 years. The greatest loss of increment in single trees is 2.0% (of the volume of non-infested tree) which occurs at the age of 70 years old. When considering the entire stand, the greatest loss of increment is 3.4% (of the volume of non-infested stand) which occurs at the age of approximately 45 years.

14

Growth patterns of Scots pine in various habitat conditions in the Niepolomice Forest

84%

Szwagrzyk J., Szewczyk J.

Folia Forestalia Polonica. Series A . Forestry

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2002

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tom 44

15

A method to set up the phases of the tree growth in thickness based on dendrochronology of an English oak

84%

Golabek E., Tukiendorf A.

Electronic Journal of Polish Agricultural Universities. Series Environmental Development

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2004

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tom 07

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nr 2

In the paper we proposed a methodology to distinguish the phases of the tree growth in thickness of an English oak in the past century based on the ring chronology. We analyzed northern, eastern, southern and western tree ring increments using both the statistical modeling and a taxonomic method. Each step of the methodological procedure was described in the paper and the results were displayed graphically in line plots via a dendrogram and set in a table. To familiarize the Reader with the chosen methodology, some general notes over the approaches were added to the text. In the analysis, three phases of the tree thickness growth in the examined monumental English oak in the 20th century were set up statistically. The average-annual increments for these phases were calculated and plotted. The appropriateness of this technique for a practical use in dendrochronology was concluded finally and its wider application suggested.

16

Metoda obliczania rocznej produkcji biomasy w zbiorowisku lesnym w zaleznosci od wysokosci i wieku drzewostanu

67%

Sulinski J.

Acta Agraria et Silvestria. Series Silvestris

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2007

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tom 45

89-119

Referring to the Czarnowskis formula describing tree-stand height growth rate, a definition of height growth benchmark of site quality and a formula for its calculation have been developed. Besides, a formula connecting the height growth benchmark of site quality and the annual tree-stand biomass production has been constructed. The above benchmark was developed on premises that in clear-cut managed stands: (1) product values for annual maximum height growth and the age at which it takes place as well as (2) tree-stand height at which the annual height growth rate reaches maximum values are specific for any tree species irrespectively of the site quality. A formula connecting annual biomass production and height growth benchmark of site quality has been developed on premises that the highest possible annual biomass production as calculated for given tree species in a forest community is no lower than the site productivity. The coefficients values applied in respective formulae were calculated basing on data taken from the growing stock tables for five tree species: Scots pine, Norway spruce, European fir, European beech, and English oak. In total, the data for 148 height curves were taken into consideration while the annual biomass production was analyzed for 23 tree-stands. The developed formulae are of use for practical purposes however their applicability is to be restricted in the same way as restricted is the applicability of the growing stock tables that have been used for these formulae identification.

17

Growth and nutrition of restored Quercus castaneifolia C.A. Mey. versus native Celtis australis L. tree species: conservation perspectives of Hyrcanian forest (Iran)

67%

Hosseini S. M., Raouhi-Moghaddam E., Ebrahimi E., Rahmani A., Tabari M.

Polish Journal of Ecology

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2010

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tom 58

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nr 1

For native species, mixed plantation systems seem to be the most appropriate for providing a broader range of options such as production, protection, biodiversity conservation and restoration. After 11 years, growth and nutrition and soil properties were examined in young plantation of two indigenous tree species in Hyrcanian forests of Iran. Quercus castaneifolia C.A. Mey. (as target species) and Celtis australis L. (as native component species) were planted in five proportions (100Q, 70Q:30C, 60Q:40C, 50Q:50C, 40Q:60C) in Noor, Iran. Diameter at breast height of individual Quercus trees and total basal area were affected by the presence of Celtis. Percent retranslocation of nutrients in Quercus followed in order: K> P> N. Leaf-litter fall production ranged from 4.10 to 6.14 t ha⁻¹ year⁻¹. Ca and Mg concentrations in fully expanded leaves of Quercus, N and K retranslocation of Quercus, concentration of available P in soil were higher in some of the mixed plantations than in monoculture of Quercus. On the other hand, N concentration in fully expanded leaves of Quercus, N fluxes and soil C/N ratio were higher in monoculture of Quercus. Within the framework of this experiment, it appeared that production was maximized when these two species were grown together in the proportion of 60% Quercus and 40% Celtis.

18

Effect of alpine treeline conditions on the response of the stem radial variation of Picea meyeri Rebd. et Wils to environmental factors

67%

Dong M., Jiang Y., Zhang W., Yang Y., Yang H.

Polish Journal of Ecology

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2011

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tom 59

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nr 4

Alpine treeline is an important ecological boundary, marked by a change in site conditions and plant communities when crossing the forest limit, and tree growth at treeline is strongly constrained by the harsh environment. Finer resolution studies of tree radial variation on short temporal scales can be useful to explore the main physical variables that trigger the radial growth. From 19th Oct. 2008 to 25th Oct. 2009, we continuously monitored the stem radial variation of Picea meyeri Rebd. Et Wils trees using point dendrometers, at the treeline of Luya Mountains (altitude 2700 m a.s.l.), North China. Our results showed that there were two reverse daily variation patterns in the warm and cold seasons, which were related to the daily transpiration course and daily stem freeze-thaw cycles, respectively. Annual stem radial growth of Picea meyeri was divided into the four distinct periods: 1) spring stem rehydration, 2) summer stem rapid growth, 3) autumn stem dehydration contraction and 4) winter stem stagnation. The stem radial variation of Picea meyeri at the alpine treeline was closely dependent on climate conditions. Soil temperature was the most important factor affecting radial growth, which determined the initiation of radial growth and the cambial activity during the growing season.

19

Effects of shoot heading on three canopy vase forms of apricot trees (Armeniaca vulgaris Lam.)

67%

Szklarz M., Radajewska B., Kluczynska M., Glowacka E.

Journal of Fruit and Ornamental Plant Research

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2012

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tom 20

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nr 2

20

Wpływ odmiany i podkładki na wzrost i plonowanie czereśni

67%

Kaplan M., Szot I., Dobrzanski B., Baryla B., Lipa T., Klimek K.

Acta Agrophysica

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2018

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tom 25

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nr 4

Celem przeprowadzonych badań była ocena wzrostu i plonowania drzew czterech odmian czereśni okulizowanych na dwóch podkładkach. Badania przeprowadzono w latach 2011-2013 w sadzie produkcyjnym zlokalizowanym na terenie Wyżyny Sandomierskiej. Materiał doświadczalny obejmował czereśnie odmian: ‘Kordia’, ‘Regina’, ‘Summit’ i ‘Vanda’ w wieku od 3 do 5 lat, okulizowane na podkładkach: GiSelA 5 i Colt. Wzrost drzew czterech odmian czereśni określony powierzchnią przekroju poprzecznego pni, objętością korony, współczynnikiem intensywności owocowania i produktywności korony istotnie zależał od odmiany i typu zastosowanej podkładki. Drzewa odmiany ‘Summit’ średnio za cały cykl badań plonowały istotnie najlepiej, zaś ‘Kordia’ i ‘Vanda’ istotnie najsłabiej. Drzewa uszlachetniane na podkładce GiSelA 5 charakteryzowały się istotnie mniejszą powierzchnią przekroju poprzecznego pni i objętością korony oraz istotnie większym współczynnikiem intensywności owocowania, produktywności korony oraz średnim plonem za cały cykl badań niż drzewa na podkładce Colt. Istotnie największą masą owocu czereśni i pestek charakteryzowała się odmiana ‘Regina’. Owoce odmian ‘Kordia’ i ‘Regina’ zawierały istotnie więcej ekstraktu niż owoce pozostałych odmian. Nie wykazano istotnego wpływu typu podkładki na masę owocu i pestki, procentowy udział pestki w owocu oraz poziom ekstraktu.

Ograniczanie wyników

Natural trunk rooting and root suckers of pear tree Pyrus x amphigenea Domin ex Dostalek

Relationships between some soil properties and growth indexes in plum and apple trees within the hilly regions of Romania

The effect of the 'Northstar' interstem on the growth, yielding and fruit quality of five sweet cherry cultivars

Variation in transverse section area of pine tracheid walls [Pinus sylvestris L.]

Different responses of the radial growth of conifer species to increasing temperature along altitude gradient: Pinus tabulaeformis in the Helan Mountains (Northwestern China)

How can we propagate the Metasequoia glyptostroboides Hu et Cheng?

Eleven year evaluation of American (Geneva) and Polish rootstocks with "Golden Delicious Reinders" apple in Poland

Growth of trees used in reforestation of a Northern slope of the external spoil bank of the "Belchatow" Brown Coal Mine

Edge effects on tree growth and species diversity in forests of different types and ages

Allometric stability indexes of stands growing on former farmland soils

Assessment of growth and cropping of plum trees grafted on Wangenheim Prune rootstock and originated from in vitro

Growth, yield and fruit quality of Valor plum trees grafted on different rootstocks - preliminary results

Effect of the pest Marchalina hellenica Gennadius [Homoptera, Margarodidae] on the growth parameters of Pinus brutia Ten. in Mugla Region [Turkey]

Growth patterns of Scots pine in various habitat conditions in the Niepolomice Forest

A method to set up the phases of the tree growth in thickness based on dendrochronology of an English oak

Metoda obliczania rocznej produkcji biomasy w zbiorowisku lesnym w zaleznosci od wysokosci i wieku drzewostanu

Growth and nutrition of restored Quercus castaneifolia C.A. Mey. versus native Celtis australis L. tree species: conservation perspectives of Hyrcanian forest (Iran)

Effect of alpine treeline conditions on the response of the stem radial variation of Picea meyeri Rebd. et Wils to environmental factors

Effects of shoot heading on three canopy vase forms of apricot trees (Armeniaca vulgaris Lam.)

Wpływ odmiany i podkładki na wzrost i plonowanie czereśni