Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

/ D. I. Nazimova [et al.] // Unasylva. - 2009. - Vol. 60, Is. 231-232. - P34-36 . - ISSN 0041-6436
Аннотация: The post-fire succession over the past 350 years have been analyzed so as to predict the effect of the increase in fires that is being anticipated to go hand in hand with climate change in southern Siberia, Russian Federation. Succession is defined to be the gradual supplanting of one plant community by another as conditions change either by natural means or an alter disturbance. A number of stages are being noticed in most successions on which different collections of species dominate. Finally, the last part of it is when the species composition no longer changes with time in the absence of natural or human-caused disturbances. It has been found out that the predicted increase in fires resulting from climate change in southern Siberia will probably reduce the number of larch and shade-tolerant conifers in favor of Scots pine, birch and aspen, as well as with non-tree plant communities of bushes, grasses and herbs. The continues warm and humid climate will lead to some changes in the composition of forest ecosystems that are not in favor economically. Thus, it is now necessary to have management plans for the plantations in Siberian pine to consider the increased risk of destructive surface fires and focus on fire protection.

Scopus

Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences (SBRAS), Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nazimova, D.I.; Drobushevskaya, O.V.; Kofman, G.B.; Konovalova, M.E.

/ K. Barrett, R. Baxter, E. Kukavskaya [et al.] // Remote Sens. Environ. - 2020. - Vol. 237. - Ст. 111539, DOI 10.1016/j.rse.2019.111539 . - ISSN 0034-4257
Аннотация: Wildfire disturbances effect changes in vegetation communities that in turn influence climate. Such changes in boreal forest ecosystems can persist over decadal time scales or longer. In the ecotone between boreal forest and steppe in the region southeast of Lake Baikal in southern Siberia, shifts between the two vegetation types may be precipitated by variations in site specific conditions, as well as disturbance characteristics such as fire frequency and severity. Warmer, drier conditions in the region have been associated with a decrease in fire return intervals and greater burn severity that may, in turn, drive conversion of forests to steppe vegetation at a greater rate than has occurred prior to the onset of warming and drying. Stand-replacing fires in Pinus sylvestris stands in southern Siberia may lead to recruitment failure postfire, particularly on southwest to west-facing slopes, which are more often dominated by grasses. This study uses a combination of field data and remotely sensed indices of vegetation and moisture to distinguish between recruitment pathways in southern Siberia, and to study the influence of factors related to soils, topography, fire severity and winter snow cover on these. We expected that recruitment success would be associated with lower burn severity (higher NBR), higher greenness (NDVI) and moisture (NDMI), and winter snow (NDSI) postfire. We also expected phenological characteristics to differ among recruitment paths. Prior to burning, our sites are broadly similar in terms of remotely sensed indices of moisture (NDMI), vegetation (NDVI), and winter fractional snow cover (NDSI), but recruitment failure sites are generally drier and less green postfire. Initial differences in greenness and moisture among sites characterized by abundant recruitment (AR), intermediate recruitment (IR) and recruitment failure (RF) become more pronounced over the initial decades postfire. The earliest separability of AR and RF sites using remotely sensed indices occurs in the winter months 3–4 years postfire, during which time NDSI is highest for AR sites and lowest for RF. Although seasonality was important with regard to distinguishing among AR, IR and RF index values, the timing of phenological events such as start and end of season did not differ significantly among the sites. © 2019 The Authors

Scopus

Держатели документа:
Centre for Landscape and Climate Research, School of Geography, Geology and Environment, University of Leicester, University RoadLE1 7RH, United Kingdom
Leicester Institute for Space and Earth Observation, University of Leicester, University RoadLE1 7RH, United Kingdom
Department of Biosciences, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
V.N. Sukachev Institute of Forest of the Siberian Branch of the Russian Academy of Sciences, Separate Subdivision of the FRC KSC SB RAS 660036 Russia, 50/28 Akademgorodok, Krasnoyarsk, Russian Federation
The Branch of FBU VNIILM “Center of Forest Pyrology”, 42 Krupskaya, Krasnoyarsk, 660062, Russian Federation

Доп.точки доступа:
Barrett, K.; Baxter, R.; Kukavskaya, E.; Balzter, H.; Shvetsov, E.; Buryak, L.

[Текст] : статья / Н. М. Ковалева, Р. С. Собачкин // Лесоведение. - 2023. - № 5. - С. 502-512, DOI 10.31857/S0024114823040058 . - ISSN 0024-1148
   Перевод заглавия: RESTORATION OF VEGETATION ON FALLOWS IN KRASNOYARSK TERRITORY’S FOREST STEPPES
Аннотация: Видовое богатство залежных земель лесостепной зоны Красноярского края насчитывает 64 вида сосудистых растений из 50 родов и 19 семейств. Ведущие семейства ценофлоры: бобовые (Leguminosae) (10 видов или 16%), сложноцветные (Compositae) (10 или 16%), мятликовые (Poaceae) (9 или 14%), розоцветные (Rosaceae) (7 или 11%). Основу флоры залежей составили мезофиты (69%) с незначительным участием мезоксерофитов (17%) и мезогигрофитов (9%). Среди эколого-ценотических групп наибольшее участие принимали виды лугово-лесного разнотравья и злаков (34%), рудеральные (22%) и лесостепные (14%). Надземная фитомасса травяного покрова зависела от возраста залежи (p < 0.001) и густоты соснового подроста (p < 0.05). Разнотравно-кострецовые залежи являлись наиболее продуктивными среди залежей лесостепной зоны (1.14 ± 0.11–2.02 ± 0.25 т га–1). Разнотравно-злаковые залежи, испытывающие на себе существенное эдификаторное влияние сосны обыкновенной (Pinus sylvestris L.) (густота 29.6 тыс. шт. га–1 в пересчете в крупный подрост), имели наименьшую надземную фитомассу (0.23 ± 0.06 т га–1). Залежные участки возрастом 7–18 лет активно возобновляются древесной растительностью, где густота сосны обыкновенной варьировала в широких пределах от 0.9 до 29.6 тыс. шт. га–1 в пересчете в крупный подрост. Установлено, что при увеличении густоты сосны обыкновенной происходит снижение числа видов, видового разнообразия, видовой насыщенности, а также проективного покрытия травяного покрова (p < 0.001).
The species richness of the long-fallow lands in the Krasnoyarsk Territory’s forest-steppe zone includes 64 species of vascular plants from 50 genera and 19 families. Leading families of cenoflora are Leguminosae (10 species or 16%), Compositae (10 or 16%), Poaceae (9 or 14%) and Rosaceae (7 or 11%). The basis of the long-fallow lands flora were mesophytes (69%) with an insignificant participation of mesoxerophytes (17%) and mesohygrophytes (9%). Among the ecological-coenotic groups, species of meadow-forest forbs and grasses (34%), ruderal (22%) and forest-steppe (14%) species took the largest part. The aboveground phytomass of the grass cover depended on the age of the fallow (p < 0.001) and the density of the pine undergrowth (p < 0.05). Forb-brome fallows were the most productive among all in the forest-steppe zone (1.14 ± 0.11–2.02 ± 0.25 t ha–1). Forb-gramineous fallows, experiencing a significant edificatory influence of Scots pine (Pinus sylvestris L.) (density of 29600 units ha–1 in terms of large undergrowth), had the lowest aboveground phytomass (0.23 ± 0.06 t ha–1). Fallow plots aged 7–18 years undergo rapid reforestation, with the density of Scots pine varying widely from 0.9 to 29.6 thousand units ha–1 in terms of large undergrowth. It has been established that with an increase in the Scots pine density, the number of species, species diversity, species saturation, as well as the projective grass cover tend to decrease (p < 0.001).

Статья в РИНЦ

Держатели документа:
Институт леса им. В.Н. Сукачева СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Ковалева, Наталья Михайловна; Собачкин, Роман Сергеевич; Sobachkin, Roman Sergyeyevich; Kovalyeva, Natal'ya Mikhaylovna