Mycorrhiza Formation in Pinus Sylvestris and Picea Obovata Seedlings in Forest Nurseries in Kazakhstan

2021 ◽  
Vol 63 (3-4) ◽  
pp. 427-446
Author(s):  
D. Sarsekova ◽  
B. Osserkhan ◽  
T. Abzhanov ◽  
A. Nurlabi
Keyword(s):  
Survival Rate ◽  
Pinus Sylvestris ◽  
Open Field ◽  
Artificial Substrates ◽  
Natural Forests ◽  
Picea Obovata ◽  
Coniferous Trees ◽  
Mycorrhiza Formation ◽  
The Future ◽  
Forest Nurseries

This work presents research materials, the purpose of which is to grow seedlings of coniferous trees in the open field using artificial substrates of mycorrhizal macromycetes in forest nurseries of Central, North and Northeast Kazakhstan. The success of mycorrhiza formation in seedlings Pinus sylvestris and Picea obovata from forest nurseries of Akmola and Karaganda regions, and the survival rate of seedlings from forest nurseries of Akmola, Karaganda and Pavlodar regions of Kazakhstan are analysed. In the future, we want to expand the range of studied species and compare artificially mycorrhized seedlings with naturally mycorrhized species from natural forests. If we compare the survival rate of seedlings in nurseries, the highest in P. sylvestris seedlings in Shaldai is about 78%, low in Novodolenskoe, about 27%, and for P. obovata, on average, 66%. In the future, we want to expand the range of studied species and compare artificially mycorrhized seedlings with naturally mycorrhized species from natural forests.

scholarly journals Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Murzabyek Sarkhad ◽  
Futoshi Ishiguri ◽  
Ikumi Nezu ◽  
Bayasaa Tumenjargal ◽  
Yusuke Takahashi ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Modulus Of Rupture ◽  
Preliminary Evaluation ◽  
Pinus Sibirica ◽  
Bending Properties ◽  
Picea Obovata ◽  
Dimension Lumber ◽  
Commercial Species ◽  
Characteristic Values

Abstract The quality of dimension lumber (2 by 4 lumber) was preliminarily investigated in four common Mongolian softwoods: Pinus sylvestris L., Pinus sibirica Du Tour, Picea obovata Ledeb., and Larix sibirica Ledeb. to produce high quality dimension lumber for structural use. In total 61, 39, 67, and 37 pieces of lumber were prepared for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. The lumber was visually graded and then tested in static bending to obtain the 5% lower tolerance limits at 75% confidence level (f0.05) of the modulus of elasticity (MOE) and the modulus of rupture (MOR). In addition, the effects of sawing patterns on bending properties were also analyzed. The f0.05 of the MOE and MOR were 4.75 GPa and 15.6 MPa, 3.39 GPa and 11.0 MPa, 3.78 GPa and 11.7 MPa, and 6.07 GPa and 22.3 MPa for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. These results suggested that with a few exceptions, characteristic values of MOR in the four common Mongolian softwoods resembled those in similar commercial species already used. In visual grading, over 80% of total lumber was assigned to select structural and No. 1 grades in Pinus sylvestris and Pinus sibirica, whereas approximately 40% of total lumber in L. sibirica was No. 3 and out of grades. Sawing patterns affected bending properties in Pinus sylvestris and L. sibirica, but did not affect Pinus sibirica and Picea obovata. Dynamic Young's modulus was significantly correlated with bending properties of dimension lumber for the four species. Based on the results, it was concluded that dimension lumber for structural use can be produced from the four common Mongolian softwoods.

A chronosequence of wood decomposition in the boreal forests of Russia

2003 ◽  
Vol 33 (7) ◽  
pp. 1211-1226 ◽  
Author(s):  
Mikhail Yatskov ◽  
Mark E Harmon ◽  
Olga N Krankina
Keyword(s):  
Pinus Sylvestris ◽  
Boreal Forests ◽  
Woody Debris ◽  
Decay Resistance ◽  
Pinus Koraiensis ◽  
Decomposition Rates ◽  
Specific Density ◽  
Picea Obovata ◽  
Temperature And Precipitation ◽  
The Mean

Coarse woody debris (CWD), represented by logs and snags >10 cm in diameter and >1 m in length, was sampled at eight sites in Russian boreal forests to determine the specific density of decay classes and decomposition rates. Tree species sampled included Abies siberica Ledeb., Betula pendula Roth., Betula costata Trautv., Larix siberica Ledeb., Larix dahurica Turcz., Picea abies (L.) Karst., Picea obovata Ledeb., Picea ajanensis Fisch., Pinus koraiensis Sieb. et Zucc., Pinus siberica Ledeb., Pinus sylvestris L., and Populus tremula L. The mean densities for decay clas ses 1 through 5 ranged from 0.516 to 0.084 g·cm–3, respectively. Annual decomposition rates varied among the species, and for logs, decomposition rates ranged from 4.2 to 7.8% for B. pendula, 2.6 to 4.9% for Picea spp., 2.7 to 4.4% for Pinus sylvestris, 1.5 to 3.1% for Larix spp., and 1.5 to 1.9% for Pinus koraiensis and Pinus siberica. Logs decomposed faster than snags. Among the sites examined, temperature and precipitation did not correlate with decomposition rates, which is consistent with other studies in the boreal region. Globally, a positive correlation between decomposition and mean annual temperatures was found, with decay-resistant trees less responsive than those with low decay resistance.

Effects of mycorrhizas on growth of pine seedlings

2019 ◽  
Vol 28 (03) ◽  
pp. 41-47
Author(s):  
Gantuya B ◽  
Burenjargal O
Keyword(s):  
Survival Rate ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Root Length ◽  
Glomus Mosseae ◽  
Root Collar Diameter ◽  
Percentage Survival ◽  
Pine Seedlings ◽  
Collar Diameter ◽  
Root Collar

Scots pine (Pinus sylvestris) is an economically important source of timber in Mongolia and has been widely used in reforestation programs. In this study, we investigated the effects of mycorrhizas on the growth of pine (Pinus sylvestris) seedlings. Inoculation with ectomycorrhizas and endomycorrhizas increased the height, root length, and root collar diameter of the pine seedlings compared to the non-inoculated seedlings. Furthermore, the results of the study showed that the percentage survival rate is higher in mycorrhizal inoculated pine seedlings than control seedlings. These results demonstrated that inoculation could effectively form ectomycorrhizas with pine seedlings and promote its growth, which can be used to restore Mongolian forest. Нарсны тарьцын ургалтанд микоризын үзүүлэх нөлөө Эгэл нарс (Pinus sylvestris) нь Монгол орны хувьд эдийн засгийн чухал ач холбогдолтой мод бөгөөдойжуулалтанд өргөн ашигладаг. Бид энэхүү судалгаагаараа эгэл нарсны (Pinus sylvestris) тарьцныургалтанд микоризaхэрхэн нөлөөлж буйг судлав. Эктомикоризa (Pisolithus tinctorius, Lactarius laccata)болон эндомикоризийн (Glomus mosseae, Glomus spurcum хх) бэлдмэл ашиглан тарьсан тарьцын өндөр,үндэсний хүзүүвчийн диаметр болон үндэсний урт нь микоризын бэлдмэл ашиглаагүй тарьцуудтайхарьцуулахад илүү байв. Түүнчлэн микоризын бэлдмэл ашигласан тарьцуудын амьдралтын хувийнүзүүлэлт хяналтын тарьцуудаас өндөр байгааг уг судалгааны үр дүн харуулав. Дээрх үр дүнгээрмикоризын бэлдмэл нь нарсны суулгацын үндсэнд микориза болон хэлбэржиж, түүний өсөлтийгдэмжиж байгааг илрүүлсэн бөгөөд уг бэлдмэлийг ойг нөхөн сэргээхэд ашиглах боломжтой юм.Түлхүүр үг: Нарс, өндөр, үндэсний урт, диаметр

Evaluation of genetic diversity of Portuguese Pinus sylvestris L. populations based on molecular data and inferences about the future use of this germplasm

2013 ◽  
Vol 93 (S2) ◽  
pp. 41-48 ◽  
Author(s):  
J. CIPRIANO ◽  
A. CARVALHO ◽  
C. FERNANDES ◽  
M. J. GASPAR ◽  
J. PIRES ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Pinus Sylvestris ◽  
Molecular Data ◽  
The Future

scholarly journals Emergence levels of pine shoot beetles from roundwood piles of Scots pine and the cascading damage in the surrounding forests

Silva Fennica ◽  
2021 ◽  
Vol 55 (5) ◽  
Author(s):  
Markus Melin ◽  
Tiina Ylioja ◽  
Leena Aarnio ◽  
Katri Hamunen ◽  
Seppo Nevalainen ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Coniferous Forests ◽  
The Future ◽  
Forest Legislation ◽  
Pine Shoot Beetles

Bark beetles are amongst the most aggressive pest agents of coniferous forests. Due to this, many boreal countries have designated laws aiming to lower the risk of bark beetle epidemics. Finland’s forest legislation has pre-emptive measures targeted against bark beetles, and for Scots pine ( L.), the law concerns pine shoot beetles ( spp.). This study used data collected around 25 piles of Scots pine roundwood that were harvested in the winter but left in the forest until the following November. Thus, the pine shoot beetles were able to use the piles for breeding. We assessed the number of emerged insects from the piles and the cascading damage they caused in the surrounding forests. All roundwood piles, regardless of their volume, were used by the beetles for breeding. Highest densities of beetle exit holes were found from the parts of the log with thick and intact bark. If the bark of the log was damaged by the harvester head, the number of beetles decreased significantly. Depending on the volume of the roundwood pile, the cascading damage (fallen shoots) was noticeable up to ca. 40–60 m from the roundwood pile. Storing of piles smaller than 50 m did not cause excess damage. The number of fallen shoots per tree was generally below the known thresholds for when growth losses can occur. However, the study was conducted in mature forests, and it can be assumed that the recorded damage levels would severely affect the growth of young pines, raising the question of where to store the roundwood. As with other bark beetles, the role of beetles as damage agents may change in the future, but based on this as well as past studies, the species can be viewed as a notable damage agents only around long-term wood storage sites in the current northern conditions.Pinus sylvestrisTomicus3Tomicus

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