STABILITY OF NATURAL REGENERATION AT RAVINE-GYLLY SYSTEMS

UDC 630*234

  • Khryk Vasyl Mykhailovych – PhD (Agriculture), Associate Professor, Head of the Department of Forestry. Bila Tserkva National Agrarian University (8/1, Sobornaya Ave., 09117, Bila Tserkva, Ukraine). E-mail: hvm2020@ukr.net

  • Kimeichuk Ivan Vasyliovych – PhD student, the Department of Forests Restorations and Meliorations. National University of Life and Environmental Sciences of Ukraine (15, Geroiv Oborony str., Kyiv, 03041, Ukraine). E-mail: i_kimeichuk@nubip.edu.ua

  • Nosnikau Vadzim Valeravich – PhD (Agriculture), Associate Professor, Head of the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nosnikov@belstu.by

  • Rabko Siarhei Uladzimiravich – PhD (Agriculture), Associate Professor, Assistant Professor, the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: rebko@belstu.by

  • Kozel Aliaksandr Uladzimiravich – PhD (Agriculture), Assistant Professor, the Department of Forest Protection and Wood Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: kozel@belstu.by

  • Maliuga Volodymyr Mykolaiovych – DSc (Agriculture), Assistant Professor, the Department of Forests Restorations and Meliorations. National University of Life and Environmental Sciences of Ukraine (15, Geroiv Oborony str., Kyiv, 03041, Ukraine). E-mail: malugavolodimir1953@gmail.com

  • Yukhnovskyi Vasyl Yuriiovych – DSc (Agriculture), Professor, the Department of Forests Restorations and Meliorations. National University of Life and Environmental Sciences of Ukraine (15, Geroiv Oborony str., Kyiv, 03041, Ukraine). E-mail: yukhnov@ukr.net

Key words: sanitary state, growth, coefficient of tension, natural regeneration, thinning, fallow lands, self-seedling.

For citation: Khryk V. M., Kimeichuk I. V., Nosnikau V. V., Rabko S. U., Kozel A. U., Maliuha V. M., Yukhnovskyi V. Y. Stability of natural regeneration at ravine-gylly systems. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 2 (246), pp. 103–111 (In English). DOI: https://doi.org/10.52065/2519-402X-2021-246-13-103–111.

Abstract

Peculiarities of growth and current sanitary condition of natural regeneration of Scots pine on ravinebeam systems of Rzhyshchiv-Kaniv dislocations are analyzed. Coefficients of tree growth tension were determined that indicate their greatest values occur in dense places where plants with the minimum diameter try to reach the maximum possible height. It is correlated with sites. At the same time, they are strongly associated with the age of the plants. At a young age, the stress of tree growth becomes greatest and over time decreases. As a result, young plants have a maximum loss. The index of sanitary condition which is in an interval I.6–II.3 is established. This allows us to state the condition of the plantations as weakened, which is confirmed by the coefficients of tension of their growth. Plants of natural regeneration due to dense placement experience increased competitive influence from other trees, which affects the intensity of their growth. This accelerates differentiation, natural selection and increases the resilience of forest ecosystems to global climate change, to avoid mass drying of Scots pine. For the first time, an attempt was made to experimentally apply the coefficient of growth tension of natural regeneration on ravine-gully systems in order to clarify the feasibility of forestry measures in plantations on fallow lands. The results of research indicate the importance of regulating the density of natural regeneration, determining the duration of intervention in ecosystem change and the feasibility of their implementation on the basis of experimental justification of the number of trees by the growth rate.

Проанализированы особенности произрастания и современное санитарное состояние естественного возобновления сосны обыкновенной на овражно-балочных системах Ржищевско-Каневских дислокаций. Определены коэффициенты напряженности роста деревьев, которые указывают на то, что их наибольшие значения встречаются в местах с высокой густотой, где растения с минимальным диаметром пытаются достичь максимально возможной высоты, что также хорошо коррелирует с условиями местопроизрастания. В то же время они тесно связаны с возрастом растений. В молодом возрасте напряжение роста деревьев становится наибольшим и со временем уменьшается. В результате в молодых насаждениях происходит максимальный отпад. Рассчитан индекс санитарного состояния насаждения, который варьирует в интервале I.6–II.3. Это позволяет констатировать состояние насаждений как ослабленное, что подтверждается коэффициентами напряженности их роста. Растения естественного возобновления за счет густой посадки испытывают повышенное конкурентное влияние со стороны других деревьев, что сказывается на интенсивности их роста. Это ускоряет дифференциацию, естественный отбор и повышает устойчивость лесных экосистем к глобальному изменению климата, что позволяет снизить степень массового усыхания сосны обыкновенной. Впервые предпринята попытка экспериментального применения коэффициента напряженности роста сосны естественного возобновления для определения возможности проведения лесохозяйственных мероприятий в насаждениях на залежных землях. Результаты исследований указывают на важность регулирования густоты естественного возобновления, определения продолжительности вмешательства в изменение экосистемы и целесообразности их осуществления на основе экспериментального обоснования количества деревьев по скорости роста.

References

  1.  Maurer V. M. Kimeichuk I. V. Features of age dynamics of natural regeneration of Scots pine in the fresh pine sites of Kyiv Polissia. Ukrainian Journal of Forest and Wood Science, 2020, vol. 11, no. 1, pp. 45–54 (In Ukrainian).
  2. Shevchenko M. A. Influence of different tillage techniques on slopes to reduce melt water runoff. Meteorologiya i gidrologiya [Meteorology and hydrology], 1963, no. 2, pp. 32–37 (In Russian).
  3. Khryk V. M. Protyeroziyni vlastyvosti sosnovykh nasadzhen’ na yaruzhno-balkovykh systemakh tsentral’noyi chastyny Prydniprovs’koho Pravoberezhnoho Lisostepu. Avtoref. dys. … kand. s.-kh. nauk [Anti-erosion properties of pine plantations on ravine-gully systems of the central part of the Dnieper RightBank Forest-Steppe. Abstract of thesis PhD (Agriculture Science)]. Kiiv, 2011. 22 p. (In Ukrainian).
  4. Yukhnovskyi V. Yu., Dudarets S. M. Maliuha V. M., Khryk V. M. Protyeroziyni lisovi nasadzhennya yaruzhnobalkovykh system [Anti-erosion forest plantations of ravine-gully systems]. Condor, 2013. 512 p. (In Ukrainian).
  5. Bondar A. O. Mizhnarodna konferentsiya shchodo vsykhannya sosnovykh lisiv: zakonodavchi obmezhennya v Ukrayini blokuyut’ borot’bu z “biolohichnoyu pozhezheyu” [International Conference on Pine Forest Drying: Legislative Restrictions in Ukraine Block “Biological Fire Fight”]. Available at: http://dklg.kmu.gov.ua/forest/control/uk/publish/article?art_id=202061&cat_id=32888 (accessed 05.11.2020).
  6. Kimeichuk I. V. Sanitary condition of pine plantations on sites with different methods of preparation of fellings. Materialy Mizhnarodnoyi naukovo-praktychnoyi konferentsiyi, prysvyachenoyi 100-richchyu kafedry vidtvorennya lisiv ta lisovykh melioratsiy “Vidtvorennya lisiv ta lisova melioratsiya v Ukrayini: vytoky, suchasnyy stan, vyklyky s’ohodennya ta perspektyvy v umovakh antropotsenu” [Materials of the international scientific-practical conference dedicated to the 100th anniversary of the Department of Forest
    Reproduction and Forest Reclamation “Forest reproduction and forest reclamation in Ukraine: origins, current state, current challenges and prospects in the Anthropocene”]. Kiev, 2019, pp. 43–44 (In Ukrainian).
  7. Maliuha V. M. Plantings for different categories of land reclamation fund. Naukovyy visnyk Natsional’noho ahrarnoho universytetu [Scientific Bulletin National Agrarian University], 1999, no. 20, pp. 177–187 (In Ukrainian).
  8. Maliuha V. M., Maurer V. M., Khryk V. M. Natural regeneration of Scots pine on the ravine-gully lands of the Dnieper. Naukovyy visnyk Natsional’noho universytetu bioresursiv i pryrodokorystuvannya Ukrayiny [Scientific Bulletin of the National University of Life and Environmental Sciences of Ukraine], 2018, no. 288, pp. 80–87 (In Ukrainian).
  9. Khryk V. M., Kimeichuk I. V. Natural regeneration of European spruce on ravine-gully systems of Ovruch region. Materialy Mizhnarodnoyi naukovo-praktychnoyi konferentsiyi “Innovatsiyni tekhnolohiyi v ahronomiyi, zemleustroyi, lisovomu ta sadovo-parkovomu hospodarstvi” [Materials of the International scientific-practical conference “Innovative technologies in agronomy, land management, forestry and horticulture”]. Bila Tserkva NAU, pp. 28–30 (In Ukrainian).
  10. Khryk V. M., Maliuha V. M., Kimeichuk I. V., Khakhula V. S., Yukhnovskyi V. Yu. Natural regeneration of ravine-gally systems and former arable lands in Ovruch region. Suchasni naukovi doslidzhennya [Modern scientific researches], issue 13, part 3, 2020, pp. 28–37 (In English).
  11. Maliuha V. M., Minder V. V. Indicator of the tension of the living space of protective forest plantations. Ukrayins’kyy zhurnal lisivnytstva ta derevynoznavstva [Ukrainian Journal of Forest and Wood Sciences], 2020, vol. 11, no. 4, pp. 47–59 (In Ukrainian). DOI: 10.31548/forest2020.04.005.
  12. Mozolevskaia E. H. Methods for assess in gand forecasting the dynamics of plantations. Lesnoye khozyaystvo [Forestry], 1998, no. 8, pp. 43–45 (In Russian).
  13. Mozolevskaya E. G., Katayev O. A., Sokolova E. S. Metody lesopatologicheskogo issledovaniya ochagov stvolovykh vrediteley i bolezney lesa [Methods of forest pathological examination of foci of stem pests and forest diseases]. Moscow, Lesnoye khozyaystvo Publ., 1984, 152 р.
  14. Sanitary rules in Ukrainian Forests. Sanitarni pravyla v lisakh Ukrayiny. Postanova Kabinetu Ministriv Ukrayiny vid 27.07.1995 [Decret of Cabinet of Ministry of Ukraine of 27.07.1995. № 555]. Harvest, 1995. 16 p.
  15. Hrom M. M. Lisova taksatsiya [Forest assessment]. L’viv, RVV NLTU Ukrainy Publ., 2007. 416 p.
  16. Kashpor S. M., Strochynskyi A. A. Lisotaksatsiynyy dovidnyk [Forest measurement handbook]. Korsun’-Sheuchenskivs’kiy, Maydachenko Publ., 2013. 496 p.
01.02.2021