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Issues: 1-5 | 6-10 | 11-15 | 16-16
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PETROHAN TRAINING AND EXPERIMENTAL FOREST RANGE CAMBISOLS CLASSIFICATION

Ludmila Malinova* and Kameliya Petrova

University of Forestry, 10 Kliment Ohridski Blvd., Sofia 1797, Bulgaria.
E-mails: ludmila_malinova@yahoo.com*, kamelia.g.petrova@gmail.com

Abstract:

To classify Cambisols on a second taxonomy level, the territory of Training and Experimental
Forest Range Petrohan was differentiated into 48 relatively homogeneous territorial units based
on soil formation factors. The dominant influence of acidic products over the basic ones in soil
formation process has been proven. Cause-effect relationships were established between ‘рНH2O
– exchangeable Ca’, ‘cation exchange capacity – exchangeable acidity’ and ′рНH2O – exchangeable
Ca: exchangeable Mg′. The leaching has been advanced, and in some cases, it covers the
entire soil profile depth. The high soil acidity defines the main qualifier as dystric for the Cambisols
classification on a second taxonomy level.

(Forestry Ideas, 2019, Vol. 25, No. 1) [Download]
Downloads: 80

ASSESSING OF THE TOLERANCE OF PINUS HALEPENSIS MILL. SEEDS TO WATER AND SALINE STRESS AT THE GERMINATION STAGE

Mohamed Zouidi (1,2), Amine Habib Borsali (1,2)*, Kadda Hachem (1), Ayoub Allam (1),
Amel Naimi (1), and Imane Hakmi (1)

1. University ′Dr. Moulay Tahar′, 20 000 Saïda, Algeria. *E-mail: rhizobiologie@yahoo.fr
2. Laboratory ′Water Resources and environment′, 20 000 Saïda, Algeria.

Abstract:

Arid and semi-arid ecosystems cover a large part of the southern fringe countries of the Mediterranean
basin. Drought and salinization are the major processes of steppe land degradation.
The objective of this work was to investigate the tolerance to water and saline stress of Aleppo
pine (Pinus halepensis Mill.) seeds at the germinating stage. The adopted methodology used
increasing concentrations under a controlled temperature of 20 °C for 30 germination days of
seeds. Germination responses of seeds to different degrees of salt stress caused by NaCl (1,
2, 3, 4, and 5 g·L-1) and the water stress caused by polyethylene glycol (–0.05, –0.25, –0.5, –1,
and –2 bars) under a temperature of 20 °C showed that salt and water stress have decreased
the percentage of seed germination of Aleppo pine seeds for a period of 30 days. In the control
treatment (distilled water) with no stress the seeds showed a germination rate of 89 % for salt
stress and 90 % for water stress. The results of the study showed that salt and drought have a
depressive effect on the germination rate of Aleppo pine with a tolerance of 4 g·L-1 and –1 bars
for the stresses used.

(Forestry Ideas, 2019, Vol. 25, No. 1) [Download]
Downloads: 92

INCIDENCE AND SEVERITY OF SYMPTOMS ASSIGNED TO FRAXINUS EXCELSIOR BACTERIAL DISEASE IN THE LEFT-BANK FOREST STEPPE OF UKRAINE

Valentyna Meshkova (1)*, Valentyna Borysova (2), Maxym Didenko (2),
and Vitaliy Nazarenko (2)

1. Laboratory of Forest Protection, Ukrainian Research Institute of Forestry and Forest Melioration
named after G. M. Vysotsky, 86 Pushkinska str., Kharkiv, 61024, Ukraine.
*E-mail: Valentynameshkova@gmail.com
2. Faculty of Forest Management, Kharkiv National Agrarian University named after V. V.
Dokuchaev, Dokuchaevske-2, Kharkiv district, Kharkiv region, 62483, Ukraine.

Abstract:

The aim of the research was to estimate the spread of bacterial disease on European ash
(Fraxinus excelsior L.), ocularly estimated by lens-shaped blisters, swellings and cracs of the bark
in Pridonetsky and Vorskla-Pselsky forest typological sector of the Left-bank Forest-Steppe zone
of Ukraine. Studies were carried out in the year 2018 at 112 sample plots in Trostyanetske Forest
Enterprise of Sumy region (Vorskla-Pselsky forest typological sector), Chugujevo-Babchanske
and Skrypayivske Forest Enterprises of Kharkiv region (Pridonetsky forest typological sector). In
spite of the fact that both the incidence and severity of ash bacterial disease symptoms are significantly
higher for particular forestries and pooled data from Sumy region, the health condition
index (HCI) of ash trees is greater for forestries of Kharkiv region. Therefore, ash stands in the
inspected forestries of Sumy region are weakened, and in those of Kharkiv region are severely
weakened. Ash tree mortality was rather low in them. The highest ash mortality was registered
in Krasnyanske forestry (12.1 %) of Trostyanetsky forest enterprise. No significant correlation
was proved between parameters of ash bacterial disease and altitude. Significant correlation
was proved between the incidence and severity of ash bacterial disease symptoms, health condition
index and mortality, diameter at breast height (DBH) and disease severity. However, only
the correlation of incidence and severity of ash bacterial disease symptoms is high for Kharkiv
region (rp=0.74, rs=0.95) and moderate (rp=0.54) or high (rs=0.73) for Sumy region. Obtained distinction
in ash disease incidence and severity in different forest typological sectors data may be
explained by climate features. Higher precipitation and moisture indices in Vorskla-Pselsky forest
typological sector is favorable for ash bacterial disease. However, higher temperature together
with lower humidity in Pridonetsky forest typological sector are unfavorable to ash and increases
its susceptibility to other damage causes, particularly frost and insects.

(Forestry Ideas, 2019, Vol. 25, No. 1) [Download]
Downloads: 98

FEATURES OF CREATION AND CURRENT STATE OF THE TERESHCHENKO FAMILY PALACE AND PARK COMPLEXES IN ZHYTOMYR REGION, UKRAINE

Fedir F. Markov (1)* and Ivan P. Terelya (2)
 

1. Faculty of Forestry, Zhytomyr National Agroecological University, 7, Stary Blvd, Zhytomyr,
10008, Ukraine. *E-mail: markovfedir1987@gmail.com
2. Institute of Forestry and Park Gardening, Ukrainian National Forestry University, 19, Pryrodna
St., 79057 Lviv, Ukraine. E-mail: ITerelya@gmail.com

Abstract:

The article is devoted to the analysis of the experience of Tereshchenko family palace and
park complexes’ creation. The current state of parkland and its structure is examined with historical,
landscape, taxonomic and aesthetic perspective. In the article, the authors defined the
prospects for further studies of old parks.

(Forestry Ideas, 2019, Vol. 25, No. 1) [Download]
Downloads: 117

COARSE WOODY DEBRIS IN MATURE OAK STANDS OF UKRAINE: CARBON STOCK
AND DECOMPOSITION FEATURES

Andrii Bilous (1), Maksym Matsala (2)*, Vladimir Radchenko (3), Raisa Matiashuk (3),
Sergii Boyko (4), and Svitlana Bilous (5)

1,2. National University of Life and Environmental Sciences of Ukraine, Department of Forest
Mensuration and Forest Management, 15 Heroiv Oborony Str., Kyiv, Ukraine.
E-mails: bilous@nubip.edu.ua; matsala@nubip.edu.ua*
3. Institute for Evolutionary Ecology of the National Academy of Science of Ukraine, 37
Akademika Lebedeva Str., Kyiv, Ukraine. E-mails: rvg@nas.gov.ua; raisakiev@gmail.com
4. Forest Culture Center in Goluchow, 2 Działynskich Str., Goluchow, Poland.
E-mail: sergii.boiko@okl.lasy.gov.pl
5. National University of Life and Environmental Sciences of Ukraine, Department of Botany,
Dendrology and Forest Tree Breeding, 15 Heroiv Oborony Str., Kyiv, Ukraine.
E-mail: forest_biotech@nubip.edu.ua

Abstract:

Forest ecosystems play crucial role in climate changes mitigation, providing the carbon (C) sequestration
process. Here we overview increasing ecological importance of mature and over-mature
oak forest stands in Ukraine, with strong focus on dead biomass compartment of those. We
examined respective national forest inventory data, permanent sample plots, logs’ samplings
for estimation of decomposition dynamics. Founding out that coarse woody debris (CWD) is insufficiently
accounted in forest inventory data, we have estimated potential of this compartment
to store 4.5 % of total oak stand biomass C according to empirical data. Mean dead biomass C
stock (CWD and fine litter together) is nearly 9.3 % of total biomass stock. Obtained C stock estimations
based on field measurements correspond to previous studies in Ukraine. Modelling of
oak downed logs decomposition indicates that deadwood may remain in ecosystem for decades,
achieving 40–50 kg·m-3 wood density at 100 years point after tree death, thus playing substantial
role not only as habitat for species, but also as C sink in mid-term perspective. Imperfections in
national forest inventory system and local management regimes lead to unrecognized biases
in efforts to assess oak deadwood values in Ukraine. Herewith, target consideration of CWD
importance in current silvicultural practices is needed for maintaining this important ecosystem
component.

(Forestry Ideas, 2019, Vol. 25, No. 1) [Download]
Issues: 1-5 | 6-10 | 11-15 | 16-16