Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

Andreieva, O. Yu.; Goychuk, Anatoliy

doi:10.2478/ffp-2020-0026

Cited by 8 publications

(10 citation statements)

References 17 publications

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“…In the occurrence of fires, not only elevated temperature and insufficient precipitation are important, but also their correlation, which was calculated using the G.T. Selyaninov's hydrothermal coefficient (HTC) according to the following formula (1): (1) where ΣP is the sum of precipitation in millimetres for a period with an average monthly temperature of more than +10°C; Σt is the sum of the average daily temperatures for the same period, °C [21].…”

Section: At E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Influence of Weather Conditions on the Spread of Fires in the Forest Fund of Zhytomyr Polesia

Andreieva¹,

Skydan²,

Wójcik

et al. 2022

Scientific Horizons

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Fires are one of the critical factors in the weakening of forests. Given the high share of pine forests in the Zhytomyr Oblast, the conditions for fires are very favourable. Especially intense fires occurred in 2020, when rapid warming occurred in the spring, which in the absence of snow cover and the presence of intense winds in the February-March 2020 increased the fire danger in forests. The purpose of this study is to identify the features of the dynamics of the spread of fires in the forest stands of the Zhytomyr Oblast Department of Forestry and Hunting and assess the meteorological indicators that may affect their spread. Research methods: statistical – when analysing data on meteorological indicators and materials for accounting for forest fires. The study identified the specific features of the dynamics of fire spread in forest stands of Zhytomyr Oblast in 2014-2021. According to the analysis, there was a considerable increase in the number and area of fires in 2020 compared to the average figures for 2014-2019 and 2021 combined. During 2014-2021, 951 fires occurred on a forested area of 43,807.65 hectares. It was revealed that only 448 fires occurred in 2014-2019 and 2021, and 503 fires were recorded in 2020 on an area of 43,229 hectares. Among others, crown fires were recorded on an area of 6,389 hectares in the same 2020 year and on an area of 35.7 hectares in 2019 alone. The largest areas of crown fires were recorded on the territory of the State Enterprise “Ovrutske SF”, State Enterprise “Luhynske forestry”, State Enterprise “Ovrutske forestry” and State Enterprise “Slovechanske forestry”. The indicators of temperature, precipitation, and hydrothermal coefficient for 2014-2021 are analysed. The values of air temperature and precipitation were determined during the growing season, and the hydrothermal coefficient was calculated according to G.T. Selyaninov. The study established that the sum of air temperatures during the growing season was 3,127.6°C on average for 2014-2021. The highest temperature values were recorded during the growing season of 2018. According to the analysis of the amount of precipitation for the growing season 2014-2021, the indicators were set at 323.8 mm. The lowest precipitation rates were recorded in 2015. According to the ratio of temperature and precipitation indicators, the value of G.T. Selyaninov’s hydrothermal coefficient for the growing seasons of 2014-2021 was obtained, the average value of which was 1.04 units

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Section: At E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Influence of Weather Conditions on the Spread of Fires in the Forest Fund of Zhytomyr Polesia

Andreieva¹,

Skydan²,

Wójcik

et al. 2022

Scientific Horizons

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“…Note: a -less illuminated north-western side of the logging area; b -more illuminated south-eastern side of the logging area; c -forest side; A avg -average value of the annual wood layer; m -error of the average annual wood layer; σ -standard square deviation; σ 2 The average values of layers of early wood of trees with TTAs with different degrees of illumination and trees from the forest side for 2014-2020 are compared. A significant difference was found between the average values of early wood layer values for trees with less illuminated TTA and the corresponding values for trees with control TTA (t fact 4.08>t theor 1.76 at the significance level of 0.05).…”

Section: Table 2 Statistical Characteristics Of Layers Of Early Scots...mentioning

confidence: 99%

“…Andreieva and A.F. Goychuk also emphasises that only timely removal of colonised trees can slow down the decline of pine forests (Andreieva & Goychuk, 2018;Andreieva & Goychuk, 2020).…”

Section: Introductionmentioning

confidence: 99%

Early аnd Late Wood оf Scots Pine under Conditions of Varying Degrees of Lighting

Andreieva¹,

Koval²,

SMOLIN³

2022

Scientific Horizons

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The condition of pine stands in Polissia is deteriorating due to an increase in the number of outbreaks of sharp-dentated bark beetle (Ips acuminatus) against the background of climate change, therefore, the relevance of this problem is beyond doubt. The purpose of the study is to identify the features of the dynamics of late and early Scots pine wood (Pinus Sylvestris L.) in areas with varying degrees of illumination after continuous cutting in the foci of the sharp-dentated bark beetle (Ips acuminatus) in Polissia. Standard dendrochronological, dendroclimatic, and statistical methods are used. It is established that after continuous logging in 2013 in the adjacent areas, on the one hand, there was an increase in the radial growth of pine trees, because the nutrition areas increased and the lighting conditions of trees improved, and on the other hand, trees growing next to the logging area are weakened and have fragile cores, which indicates a loss of wood quality. After cutting, during 2014-2020, the average values of late pine trees of illuminated time trial areas compared to the corresponding values in the control were 43-45%. For early wood, these values ranged from 38-42%. The growth change indices showed, that after the 2013 logging, violations occurred for trees in illuminated temporary trial areas as opposed to the control. The most sensitive to climatic factors were tree-ring chronologies of late wood in the most illuminated trial area. An increase in the sensitivity of the radial growth of pine trees was found depending on the increase in the degree of illumination. The weakening of plantings in the most illuminated area is indicated by the fact that the greatest number of significant relationships between growth and climate were found for the tree-ring chronology of early and late wood, while there was no critical decrease in trends in late and early wood layers. The findings can be used for planning forest management activities

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“…Для ефективного захисту соснових насаджень від пошкодження комахамихвоєгризами слід вчасно виявляти їхні осередки та здійснювати в них нагляд. Як відомо (Meshkova 2009, Andreieva & Goychuk 2020, Andreieva et al 2021, осередки масового розмноження формуються у насадженнях, в яких екологічні умови є найбільш принадними для розвитку цих комах. Екологічні умови насаджень визначаються насамперед типом лісорослинних умов, віком, відносною повнотою насаджень та участю в їхньому складі породи, якій віддають перевагу комахи певного виду (Meshkova 2009).…”

Section: поліський національний університетunclassified

Зміна Принадності Насаджень ДП «Коростенське ЛМГ» Для Комах-Хвоєгризів

Andreieva¹

2021

Forest. and Forest Melior.

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Метою досліджень було оцінювання зміни за 2010–2019 рр. принадності насаджень ДП «Коростенське ЛМГ» для найпоширеніших комах-хвоєгризів: звичайного соснового пильщика – Diprion pini (Linnaeus, 1758) і рудого соснового пильщика – Neodiprion sertifer (Geoffroy, 1785) із ряду перетинчастокрилих (Hymenoptera), а також соснового шовкопряда – Dendrolimus pini (Linnaeus, 1758) із ряду лускокрилих (Lepidoptera). Виявлено, що за 2010–2019 рр. площа соснових насаджень у ДП «Коростенське ЛМГ» зменшилася на 1 036,7 га, або на 9,3 %. Принадність насаджень для формування осередків хвоєгризів, визначена за типом лісорослинних умов і відносною повнотою, мала тенденцію до збільшення, а визначена за віком – до зменшення. За сукупністю показників високу принадність насаджень для виникнення осередків рудого пильщика визначено на площі 65,4 га, звичайного соснового пильщика – на площі 40,7 га, соснового шовкопряда – на площі 61,7 га.

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Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

Cited by 8 publications

References 17 publications

Influence of Weather Conditions on the Spread of Fires in the Forest Fund of Zhytomyr Polesia

Influence of Weather Conditions on the Spread of Fires in the Forest Fund of Zhytomyr Polesia

Early аnd Late Wood оf Scots Pine under Conditions of Varying Degrees of Lighting

Зміна Принадності Насаджень ДП «Коростенське ЛМГ» Для Комах-Хвоєгризів

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