Differentiation of Forest Vegetation after Clear-Cuttings in the Ural Montains

Ivanova, Natalya

doi:10.5539/mas.v8n6p195

Cited by 11 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously, studies in the Southern Urals had been conducted. Indigenous and secondary forests, forest succession dynamics after timber harvesting, conjugacy of dynamics in forest layers and individual species in the succession series were studied (Ivanova, 2000(Ivanova, , 2012b(Ivanova, , 2014. Similar results, such as for the Middle Urals were obtained.…”

Section: Resultsmentioning

confidence: 70%

“…In previous research, reforestation in the Southern Urals was studied (Ivanova, 2014;Maiti et al, 2016). For the western low mountains of Southern Urals the dynamics of the population structure of Picea obovata during the formation of short-term secondary birch forests, long-term secondary birch forests, and stable-term secondary aspen forests was analyzed.…”

Section: Resultsmentioning

confidence: 99%

“…In the formation of tree communities, only preliminary generation of Picea obovata was involved. At later stages of recovery and age, shifts restored the ability to form new generations of coniferous species, multilayers of tree stands, and age differences in undergrowth, but failures in regeneration remained (Ivanova, 2014). In the long-term secondary birch forest (throughout their formation) the age structure of spruce populations was severely impaired: new generations of Picea obovata appeared unstable, in most cases only a few were marked as numerically small generations.…”

Section: Resultsmentioning

confidence: 99%

“…In the Ural Mountains region of Russia, industrial logging has been carried out for approximately 300 years. Intensive cutting and other forms of industrial disturbance of the mountain forests have brought about a highly mosaic structure of vegetation represented by various types of forests at different stages of regeneration and age succession (Shirokikh et al, 2013;Ivanova, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impact of Timber Harvesting on Vegetation in the Ural Mountains

Ivanova¹,

Zolotova²

2017

IJBSM

Self Cite

View full text Add to dashboard Cite

Transformation of vegetation, which takes place in dark-coniferous forests under the action of clear timber harvesting in dominating forest habitats of the mountains of the Middle Urals, Russia, was studied. Harvesting was conducted 65 years ago. Research objects were 190-year-old spruce forests with domination in herbaceous layer of Oxalis acetosella L., 65-year-old birch forest with undergrowth of thick spruce, 65-year-old birch forest with undergrowth of sparse spruce and hay meadow. The plots were studied with regard to tree stand, understory and grass layer. Sample plots included no less than 200 woody plants. The undergrowth of trees on the tapes 20x4 m 2 was studied. In order to determine the productivity of grass-dwarf shrub layer 10 to 20 record subplots of 1x1 m 2 over period of maximum grass stand were established. The plants were cut at soil level, sorted by species, dried to an absolutely dry condition at the temperature of 105 °C and afterwards weighed. It was found that strong anthropogenic effects lead to appearance of a wide spectrum of vegetation communities within a single forest habitat (one type of indigenous forests). For a long time these vegetation communities differ by the structure of all vegetation layers, conditions of soil formation, and, consequently, by the direction and intensity of restoration processes. Age of spruce undergrowth was 65 years or more for most of the recorded trees. This undergrowth survived during harvesting. The reforestation direction was determined by the number of spruce undergrowth, which was stored in the timber harvesting.

show abstract

Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Timber Harvesting on Vegetation in the Ural Mountains

Ivanova¹,

Zolotova²

2017

IJBSM

Self Cite

View full text Add to dashboard Cite

show abstract

“…Many forest bryophytes are sensitive to high light intensities, high temperatures, extensive droughts and fluctuating microclimates (Marschall & Proctor, 2004). Natural regeneration after timber harvesting often leads to different tree species composition and may cause different understory biodiversity (Shirokikh et al, 2013;Ivanova, 2014;Yan et al, 2013, etc. ); however, in the Southern Urals the effects of these processes on forest bryophytes are not well-known.…”

Section: Introductionmentioning

confidence: 99%

Effect of clear-cutting on bryophytes in pine forests of the South Urals

Баишева¹,

Широких²,

Martynenko³

2015

Arctoa, a jornal of bryology

View full text Add to dashboard Cite

In the Southern Urals, we investigated the process of natural forest regeneration and the changes in bryophyte component of the secondary plant communities originated after clear-cutting in the indigenous herbaceous-mossy pine forests. In study area, the clear-cutting facilitated the appearance of the long-term secondary pine-birch forests, which differ from natural pine forests by another tree species composition, greater herb cover and shading, low bryophyte cover. The bryophyte substrate groups respond to clear-cutting in different ways. The epixylic species are more labile and characterized by intensive processes of decreasing and increasing of diversity during the succession. The boreal forest floor species, e.g. Pleurozium schreberi and Hylocomium splendens clearly proved to be more resilient to the disturbances. The colonists (Ceratodon purpureus, Dicranella heteromalla, etc.) were particularly abundant during the period 5-10 years after cutting. In the secondary forests, the bryophyte richness was almost recovered in 40-60 years, but the abundance of some forest floor bryophytes declined significant. The bryophyte composition in the birch and pine forests slightly differs mostly due to elimination of few species that have low frequency in the forests before clear-cutting (Mnium spinosum, Lophozia ventricosa, etc.). РезюмеИзучено изменение бриокомпонента в сукцессионных сообществах, возникших в процессе естественного лесовозобновления на месте рубки условно-коренных травяно-зеленомошных сосновых лесов Южного Урала. В районе исследования сплошные рубки способствуют возникновению длительно производных сосново-березовых лесов, которые отличаются от вырубленных сосновых лесов другим составом древостоя, более интенсивным затенением, высокой сомкнутостью травяного яруса, низким проективным покрытием напочвенных мхов. Субстратные группы мохообразных реагируют на вырубку по-разному. Эпиксильные мхи более лабильны и резко изменяют свое разнообразие в ходе восстановительной сукцессии. Среди бореальных напочвенных мхов Pleurozium schreberi и Hylocomium splendens оказались наиболее устойчивы к нарушениям. Виды-колонисты Ceratodon purpureus, Dicranella heteromalla и др. имели наиболее высокое обилие в течение 5-10 лет после рубки. Во вторичных лесах видовое богатство практически восстановилось за 40-60 лет, но обилие напочвенных мхов существенно сократилось. Флористический состав мохообразных березовых и сосновых лесов немного различается, в основном, за счет исчезновения видов, которые имели низкое постоянство в лесах до рубки (Mnium spinosum, Lophozia ventricosa и др.)

show abstract