Фітомаса та депонований вуглець у лісах Полтавського надлісництва
Introduction Global climate change and the increasing concentration of greenhouse gases drive growing scientific interest in the carbon sequestration function of forest ecosystems. Forests represent one of the most efficient natural mechanisms for CO2 sequestration; therefore, assessing their biopro...
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| Дата: | 2026 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Ukrainian Research Institute of Forestry and Forest Melioration named after G. M. Vysotsky (URIFFM)
2026
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| Онлайн доступ: | https://forestry-forestmelioration.org.ua/index.php/journal/article/view/483 |
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| Назва журналу: | Forestry and Forest Melioration |
Репозитарії
Forestry and Forest Melioration| _version_ | 1866573085633675264 |
|---|---|
| author | Kovalevskyi, S. S. Khryk, V. M. |
| author_facet | Kovalevskyi, S. S. Khryk, V. M. |
| author_sort | Kovalevskyi, S. S. |
| baseUrl_str | https://forestry-forestmelioration.org.ua/index.php/journal/oai |
| collection | OJS |
| datestamp_date | 2026-05-29T18:31:45Z |
| description | Introduction
Global climate change and the increasing concentration of greenhouse gases drive growing scientific interest in the carbon sequestration function of forest ecosystems. Forests represent one of the most efficient natural mechanisms for CO2 sequestration; therefore, assessing their bioproductivity at the regional level is of critical importance for the development of adaptive strategies for sustainable forest management. Despite numerous studies on the forest carbon balance in Ukraine, a comprehensive assessment of phytomass stocks and sequestered carbon specifically for the forests of the Poltavske Forestry Management Unit of the Branch “Slobozhanskyi Forest Office”, State Specialized Forest Enterprise “Forests of Ukraine” has remained insufficiently explored.
The aim of the study was to determine total phytomass stocks by major fractions and to assess the carbon potential of the main forest-forming tree species in the studied region of the Left-Bank Forest-Steppe of Ukraine.
Materials and Methods
The object of the study is forest stands of the Poltavske Forestry Management Unit, with a total forest land area of 95,561 ha. The information base consisted of materials from the State Forest Inventory and compartment-level forest mensuration database of the Ukrainian State Forest Inventory Enterprise (VO “Ukrderzhlisproekt”), processed using the specialized software package “PERTA” (National University of Life and Environmental Sciences of Ukraine). The dataset included 1,137 sample plots obtained through sampling-based forest inventory methods and 3,248 relascope plots. Phytomass was estimated according to the methodology developed by P.I. Lakida, using a system of multifactor regression equations to calculate the mass of individual tree components (stem wood, bark, branches, foliage or needles, and root systems) in absolutely dry condition. Conversion of phytomass into sequestered carbon was performed using internationally recognized conversion factors: 0.50 for woody fractions and 0.45 for foliage and understory vegetation. Statistical data processing was carried out using Microsoft Excel and SPSS.
Results
The analysis of species composition revealed the dominance of coniferous tree species (74% of forested areas), among which Scots pine (Pinus sylvestris L.) overwhelmingly prevails (99.9%). Hardwoods (10%) and softwoods (16%) occupy smaller shares. The age structure is characterized by the predominance of middle-aged (37%) and maturing stands (28%); young stands account for 24%, while mature and overmature stands represent only 10%. The average growing stock of stem wood is 218 m3·ha-1, with an annual increment of 4.0 m3·ha-1. The total phytomass of forest stands within the super-forestry is estimated at 15,100.59 thousand tonnes of absolutely dry matter, of which 70.4% belongs to coniferous stands. The phytomass structure is dominated by stem wood and bark – 72% (10,876.94 thousand tonnes); root systems account for 17%, branch wood and bark for 6%, assimilation apparatus for 1%, and understory vegetation for 4%. The total amount of sequestered carbon equals 7,513.88 thousand tonnes. The highest carbon density was recorded in hardwood stands—10.7 kg·m-2, which is 44.6% higher than in coniferous stands (7.4 kg·m-2). The area-weighted average carbon density across the enterprise is 7.8 kg·m-2.
Conclusions
It was evaluated that the total biomass of the forest stands in the Poltavske Forestry Management Unit, Branch “Slobozhanskyi Forest Office”, State Specialized Forest Enterprise “Forests of Ukraine” was 15,100.59 thousand tonnes of absolutely dry matter. This volume of organic mass ensures the accumulation of 7,513.88 thousand tonnes of carbon. It was revealed that although coniferous species dominate the enterprise’s forest fund (74 % of the area), the highest specific density of sequestered carbon was recorded in hardwood stands – 10.7 kg·m-2. In the structural distribution of phytomass, the absolute majority falls on the wood and bark of the trunks (72 %). Root systems accumulate about 17 % of carbon, the crown (branches and assimilation apparatus) – 7 %, and understory vegetation – 4 %. The analysis of the age structure of forests showed a significant predominance of middle-aged and maturing stands (over 65 %), which indicates a high potential for carbon dioxide absorption in the coming years, but requires optimization to ensure uniform forest use. The obtained results have significant practical value for improving the national greenhouse gas inventory system, spatial planning of forestry activities, and the development of bioenergy in the region.
2 Figs., 3 Tables, 21 Refs. |
| doi_str_mv | 10.33220/1026-3365.148.2026.134 |
| first_indexed | 2026-05-30T01:00:11Z |
| format | Article |
| id | oai:ojs2.forestry-forestmelioration.org.ua:article-483 |
| institution | Forestry and Forest Melioration |
| keywords_txt_mv | keywords |
| language | Ukrainian |
| last_indexed | 2026-05-30T01:00:11Z |
| publishDate | 2026 |
| publisher | Ukrainian Research Institute of Forestry and Forest Melioration named after G. M. Vysotsky (URIFFM) |
| record_format | ojs |
| spelling | oai:ojs2.forestry-forestmelioration.org.ua:article-4832026-05-29T18:31:45Z Phytomass and sequestered carbon in the forests of the Poltavske Forestry Management Unit Фітомаса та депонований вуглець у лісах Полтавського надлісництва Kovalevskyi, S. S. Khryk, V. M. forest ecosystems bioproductivity carbon cycle лісові екосистеми біопродуктивність вуглецевий цикл Introduction Global climate change and the increasing concentration of greenhouse gases drive growing scientific interest in the carbon sequestration function of forest ecosystems. Forests represent one of the most efficient natural mechanisms for CO2 sequestration; therefore, assessing their bioproductivity at the regional level is of critical importance for the development of adaptive strategies for sustainable forest management. Despite numerous studies on the forest carbon balance in Ukraine, a comprehensive assessment of phytomass stocks and sequestered carbon specifically for the forests of the Poltavske Forestry Management Unit of the Branch “Slobozhanskyi Forest Office”, State Specialized Forest Enterprise “Forests of Ukraine” has remained insufficiently explored. The aim of the study was to determine total phytomass stocks by major fractions and to assess the carbon potential of the main forest-forming tree species in the studied region of the Left-Bank Forest-Steppe of Ukraine. Materials and Methods The object of the study is forest stands of the Poltavske Forestry Management Unit, with a total forest land area of 95,561 ha. The information base consisted of materials from the State Forest Inventory and compartment-level forest mensuration database of the Ukrainian State Forest Inventory Enterprise (VO “Ukrderzhlisproekt”), processed using the specialized software package “PERTA” (National University of Life and Environmental Sciences of Ukraine). The dataset included 1,137 sample plots obtained through sampling-based forest inventory methods and 3,248 relascope plots. Phytomass was estimated according to the methodology developed by P.I. Lakida, using a system of multifactor regression equations to calculate the mass of individual tree components (stem wood, bark, branches, foliage or needles, and root systems) in absolutely dry condition. Conversion of phytomass into sequestered carbon was performed using internationally recognized conversion factors: 0.50 for woody fractions and 0.45 for foliage and understory vegetation. Statistical data processing was carried out using Microsoft Excel and SPSS. Results The analysis of species composition revealed the dominance of coniferous tree species (74% of forested areas), among which Scots pine (Pinus sylvestris L.) overwhelmingly prevails (99.9%). Hardwoods (10%) and softwoods (16%) occupy smaller shares. The age structure is characterized by the predominance of middle-aged (37%) and maturing stands (28%); young stands account for 24%, while mature and overmature stands represent only 10%. The average growing stock of stem wood is 218 m3·ha-1, with an annual increment of 4.0 m3·ha-1. The total phytomass of forest stands within the super-forestry is estimated at 15,100.59 thousand tonnes of absolutely dry matter, of which 70.4% belongs to coniferous stands. The phytomass structure is dominated by stem wood and bark – 72% (10,876.94 thousand tonnes); root systems account for 17%, branch wood and bark for 6%, assimilation apparatus for 1%, and understory vegetation for 4%. The total amount of sequestered carbon equals 7,513.88 thousand tonnes. The highest carbon density was recorded in hardwood stands—10.7 kg·m-2, which is 44.6% higher than in coniferous stands (7.4 kg·m-2). The area-weighted average carbon density across the enterprise is 7.8 kg·m-2. Conclusions It was evaluated that the total biomass of the forest stands in the Poltavske Forestry Management Unit, Branch “Slobozhanskyi Forest Office”, State Specialized Forest Enterprise “Forests of Ukraine” was 15,100.59 thousand tonnes of absolutely dry matter. This volume of organic mass ensures the accumulation of 7,513.88 thousand tonnes of carbon. It was revealed that although coniferous species dominate the enterprise’s forest fund (74 % of the area), the highest specific density of sequestered carbon was recorded in hardwood stands – 10.7 kg·m-2. In the structural distribution of phytomass, the absolute majority falls on the wood and bark of the trunks (72 %). Root systems accumulate about 17 % of carbon, the crown (branches and assimilation apparatus) – 7 %, and understory vegetation – 4 %. The analysis of the age structure of forests showed a significant predominance of middle-aged and maturing stands (over 65 %), which indicates a high potential for carbon dioxide absorption in the coming years, but requires optimization to ensure uniform forest use. The obtained results have significant practical value for improving the national greenhouse gas inventory system, spatial planning of forestry activities, and the development of bioenergy in the region. 2 Figs., 3 Tables, 21 Refs. Визначено, що загальна фітомаса лісових насаджень Полтавського надлісництва філії «Слобожанський лісовий офіс» ДП «Ліси України» становить 15 100,59 тис. т абсолютно сухої речовини. Цей обсяг органічної маси забезпечує акумуляцію 7 513,88 тис. т вуглецю. Виявлено, що хоча в лісовому фонді надлісництва домінують хвойні деревні види (74 % площі), найвищу питому щільність депонованого вуглецю зафіксовано саме у твердолистяних насадженнях – 10,7 кг·м-2. У структурному розподілі фітомаси абсолютна більшість припадає на деревину і кору стовбурів (72 %). Кореневі системи акумулюють близько 17 % органічної маси, крона (гілки та асиміляційний апарат) – 7 %, а піднаметова рослинність – 4 %. Аналіз вікової структури лісів виявив суттєве переважання середньовікових і пристиглих деревостанів (понад 65 %), що свідчить про високий потенціал поглинання вуглекислого газу найближчими роками, однак потребує оптимізації для забезпечення рівномірного лісокористування. Одержані результати мають вагоме практичне значення для вдосконалення системи національної інвентаризації парникових газів, просторового планування лісогосподарських заходів та розвитку біоенергетики в регіоні. Ukrainian Research Institute of Forestry and Forest Melioration named after G. M. Vysotsky (URIFFM) 2026-05-29 Article Article application/pdf https://forestry-forestmelioration.org.ua/index.php/journal/article/view/483 10.33220/1026-3365.148.2026.134 Forestry and Forest Melioration; No. 148 (2026): Forestry and Forest Melioration; 134-142 Лісівництво і Агролісомеліорація; № 148 (2026): Лісівництво і Агролісомеліорація; 134-142 2663-4147 1026-3365 10.33220/1026-3365.148.2026 uk https://forestry-forestmelioration.org.ua/index.php/journal/article/view/483/436 Copyright (c) 2026 Forestry and Forest Melioration http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | лісові екосистеми біопродуктивність вуглецевий цикл Kovalevskyi, S. S. Khryk, V. M. Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title | Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title_alt | Phytomass and sequestered carbon in the forests of the Poltavske Forestry Management Unit |
| title_full | Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title_fullStr | Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title_full_unstemmed | Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title_short | Фітомаса та депонований вуглець у лісах Полтавського надлісництва |
| title_sort | фітомаса та депонований вуглець у лісах полтавського надлісництва |
| topic | лісові екосистеми біопродуктивність вуглецевий цикл |
| topic_facet | forest ecosystems bioproductivity carbon cycle лісові екосистеми біопродуктивність вуглецевий цикл |
| url | https://forestry-forestmelioration.org.ua/index.php/journal/article/view/483 |
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