scholarly journals The composition and state of native and introduced woody species in the zone of railway transport influence in the Kola Polar region

2020 ◽  
Vol 9 (2) ◽  
pp. 109-114
Author(s):  
Ekaterina A. Sviatkovskaya ◽  
Natalya Vlafimirovna Saltan ◽  
Nadezhda N. Trostenyuk
Keyword(s):  
Polar Region ◽  
Woody Species ◽  
Larix Sibirica ◽  
Railway Stations ◽  
Caragana Arborescens ◽  
Indigenous Trees ◽  
Phosphorus And Potassium ◽  
Malus Baccata ◽  
Padus Avium ◽  
Potassium Exchange

The paper analyzes the state and the diversity of native and introduced woody plants used in landscaping railway stations in 5 cities of the Kola Polar region. The species composition is represented by 22 species, 16 genera, and 9 families. Sorbus gorodkovii (39%) is the most common among trees, Rosa rugosa (44%) is the most common among shrubs. The authors have observed two rare introduced woody species (Larix sibirica Ledeb., Syringa josikaea Jacq. fil.) included in Red Data Books of various ranks. 6 categories of plant state have been identified. Betula pubescens has the largest share of healthy plants among indigenous trees species, Malus baccata and Larix sibirica among introduced species, Rosa pimpinellifolia, Caragana arborescens, Crataegus sanguinea among shrubs in the station territories. Sorbus gorodkovii and Padus avium are in a critical state. The agrochemical soil study showed a low availability of nitrogen compounds and a high content of phosphorus and potassium exchange forms. It has been revealed that the main weakening causes are old age of plants, violation of maintenance technology, and failure to comply with environmental conditions.

EXPERIENCE OF PLANTING LARGE SIZE CONIFEROUS WOODY SPECIES IN THE SPRING-SUMMER PERIOD ON THE KOLA NORTH

2021 ◽  
Vol 21 (3) ◽  
pp. 57-70
Author(s):  
E.A. Svyatkovskaya ◽  
◽  
N.V. Saltan ◽  
E.P. Rybalka ◽  
N.N. Trostenyuk ◽  
...  
Keyword(s):  
Root System ◽  
Picea Glauca ◽  
Polar Region ◽  
Woody Species ◽  
Larix Sibirica ◽  
Morphometric Parameters ◽  
Summer Period ◽  
Large Size ◽  
Urban Conditions

The first experience of transplanting large-sized coniferous dendrointroducents (Picea glauca (Moench) Voss, Larix sibirica Ledeb.) in the spring-summer period without preliminary prepara-tion of the root system in the urban conditions of the Polar region was presented. Four specimens of middle-aged plants of both species were selected. The transplant was carried out with the max-imum use of mechanized equipment, which ensures good preservation of the lump and the tree it-self. There were four mutually related stages of work (preparatory, digging out plants, transporta-tion, planting), the quality of which depends on the success of plant survival. A brief description of the decorative qualities, morphometric parameters and the state of the experimental plants has been given. It has shown that due to the peculiarities of the soil and the location of the root system in coniferous introduced species, a clod of earth should be at least 60 cm thick, with a diameter of 110 to 130 cm. The main agrotechnical methods for the creation and care of plantings from large-sized plants were given.

scholarly journals Genome-Wide Identification of CsATGs in Tea Plant and the Involvement of CsATG8e in Nitrogen Utilization

2020 ◽  
Vol 21 (19) ◽  
pp. 7043
Author(s):  
Wei Huang ◽  
Dan-Ni Ma ◽  
Hong-Ling Liu ◽  
Jie Luo ◽  
Pu Wang ◽  
...  
Keyword(s):  
Camellia Sinensis ◽  
Woody Species ◽  
Nutrient Utilization ◽  
Tea Plant ◽  
Plant Genome ◽  
Wild Type ◽  
Genome Wide ◽  
A Genome ◽  
Phosphorus And Potassium ◽  
Stage 1

Nitrogen (N) is a macroelement with an indispensable role in the growth and development of plants, and tea plant (Camellia sinensis) is an evergreen perennial woody species with young shoots for harvest. During senescence or upon N stress, autophagy has been shown to be induced in leaves, involving a variety of autophagy-related genes (ATGs), which have not been characterized in tea plant yet. In this study, a genome-wide survey in tea plant genome identified a total of 80 Camellia Sinensis autophagy-related genes, CsATGs. The expression of CsATG8s in the tea plant showed an obvious increase from S1 (stage 1) to S4 (stage 4), especially for CsATG8e. The expression levels of AtATGs (Arabidopsis thaliana) and genes involved in N transport and assimilation were greatly improved in CsATG8e-overexpressed Arabidopsis. Compared with wild type, the overexpression plants showed earlier bolting, an increase in amino N content, as well as a decrease in biomass and the levels of N, phosphorus and potassium. However, the N level was found significantly higher in APER (aerial part excluding rosette) in the overexpression plants relative to wild type. All these results demonstrated a convincing function of CsATG8e in N remobilization and plant development, indicating CsATG8e as a potential gene for modifying plant nutrient utilization.

scholarly journals NEW INSIGHTS CONCERNING IDENTIFICATION, MANAGEMENT AND CONSERVATION OF INDIGENOUS TREES AND SHRUBS IN THE NETHERLANDS

2021 ◽  
Vol 56 ◽  
pp. 149-167
Author(s):  
Norbertus Cornelis Maria MAES ◽  
Keyword(s):  
The Netherlands ◽  
Woody Species ◽  
Natura 2000 ◽  
Landscape Elements ◽  
Climate Zones ◽  
Indigenous Trees ◽  
Ancient Woodlands ◽  
Trees And Shrubs ◽  
Management And Conservation ◽  
Lower Rhine

In densely populated European countries like the Netherlands, old landscape elements such as ancient woodlands and ancient hedges are today rare. Owing to the introduction of exotic species and indigenous trees and shrubs imported from other climate zones, recognition of truly wild, i.e. autochthonous, individuals and populations is now problematical, posing challenges for forest management agencies, particularly at Natura 2000 sites. The author has developed a method for recognising genetically pure wild woody species, based on characteristics of the plant itself and those of the growing site. With this method, explained here, around 70% of the Netherlands has been surveyed, along with much of Flanders and part of the lower Rhine region of Germany. The results are illustrated with reference to two Dutch ancient woodlands, where new insights were obtained in terms of native status of the woody species and the ‘authenticity’ of the tree and shrub layer.

scholarly journals Результаты интродукции древесных растений в дендрарии Сибирского государственного университета (юг Средней Сибири)

2017 ◽  
pp. 33-37
Author(s):  
O. Butorova ◽  
R. Matveeva
Keyword(s):  
Quercus Rubra ◽  
Vitis Amurensis ◽  
Pinus Sibirica ◽  
Tilia Cordata ◽  
Acer Platanoides ◽  
Viburnum Opulus ◽  
Picea Obovata ◽  
Malus Baccata ◽  
Mahonia Aquifolium ◽  
Padus Avium

Приведены сведения о коллекции интродуцентов в дендрарии Учебно-опытного лесхоза Сибирского государственного университета науки и технологий им. акад. М. Ф. Решетнёва (СибГУ). Начало создания дендрария относится к 1948 г. В настоящее время коллекция представлена видами дальневосточной, европейской, сибирской, североамериканской флор, Японии и Китая. Коллекции ив и аллее лип придан статус «Памятника природы». В дендрарии произрастают редкие и исчезающие виды, нуждающиеся в охране и вошедшие в «Красную книгу СССР» (1978) – Princepia sinensis, а также в сводку «Редкие и исчезающие растения Сибири» (1980) – Euonymus maackii, Euonymus sacrosancta, Viburnum opulus, Tilia cordata, Hippophaë rhamnoides, Securinega suffruticosa, Padus avium, Malus baccata. Высоты древесных видов варьируют в основном в пределах 8,0-19,0 м. Наибольшей высоты достигли Pinus sibirica, P. koraiensis, Picea obovata, Abies sibirica, Tilia cordata (20-23 м). Из семян, собранных в дендрарии, выращивается посадочный материал (сеянцы собственной репродукции), которые используются для создания отделения вторичной интродукции. Плодо(семе)ношение разной интенсивности отмечено у всех видов. Большинство из них находятся в хорошем состоянии, особенно интродуценты дальневосточной флоры. В группу со слабой жизненностью отнесены Amorpha fruticosa, Vitis amurensis, Quercus rubra, Acer platanoides, Mahonia aquifolium, Securinega suffruticosa.

scholarly journals FLORA OF THE IVANOVO REGION FARMSTEAD PARK “GRIDINO”

2015 ◽  
Vol 4 (2) ◽  
pp. 21-24
Author(s):  
Elena Anatolievna Borisova
Keyword(s):  
Plant Species ◽  
Biological Diversity ◽  
Vascular Plant ◽  
Woody Species ◽  
Alien Plant ◽  
Park Planning ◽  
Introduced Plants ◽  
Caragana Arborescens ◽  
Natural Monument ◽  
Important Object

Data about flora of Ivanovo old region farmstead park Gridino are presented. Park and reservoir belong to Ivanovo region special protected territories-natural monument. Historical information about manufacturer farmstead of M.A. Pavlov and park planning are briefly reported. Modern park flora consists of 270 vascular plant species from 5 classis, 94 families and 146 genera. Asteraceae-32 species (11,9%), Rosaceae-29 species (10,7%), Poaceae-24 species (8,9%) are leading families of the park flora. 1 species (Agrimonia pilosa) included in to Convention on the Conservation of European Wildlife, 3 rare species (Abies sinirica, Cornus alda, Deschampsia flexuosa)-in to regional Red date book are characterized. Some decorative arboreal (woody) species (Thuja occidentalis, Larix sibirica, Alnus incana forma pinnati - fida, Populus alba, Caragana arborescens, Crataegus sanguine and other) species and grassy introduced plants (Hieracium murorum, Myosotis sylvatica, Phyteuma spicatum and other) are described. Examples of alien plant species spreading on territory of the park are given. Events for green plantations improvement are listed. Farmstead park Gridino is important object for regional biological diversity conservation and rare plan protection. Large recreational, educational and informa - tive functions of the park are shown.

RESPONSE OF WEEDS AND SEVERAL SHELTERBELT TREE AND SHRUB SPECIES TO GRANULAR SIMAZINE

1972 ◽  
Vol 52 (2) ◽  
pp. 197-202
Author(s):  
R. GROVER ◽  
G. A. MORGAN
Keyword(s):  
Picea Glauca ◽  
Populus Deltoides ◽  
Prunus Virginiana ◽  
Shrub Species ◽  
Visible Injury ◽  
Ulmus Americana ◽  
Caragana Arborescens ◽  
Malus Baccata ◽  
Salix Pentandra ◽  
Annual Weeds

Granular simazine (2-chloro-4,6-bis(ethylamino)-s-triazine), at 3.36, 6.72, and 10.08 kg/ha, was applied to new transplants of Caragana arborescens Lam., Cotoneaster acutifolia Turcz., Crataegus sp., Fraxinus pennsylvanica Marsh. var. subintegerrima (Vahl.) Fern., Hippophae rhamnoides L., Lonicera tatarica L., Malus baccata (L.) Borkh., Picea glauca (Moench) Voss, Picea pungens Engelm., Pinus sylvestris L., Populus deltoides Marsh., Populus × Northwest (Hort.), Prunus padus L. var. commutata Dipp., Prunus virginiana L. var. melanocarpa (A. Nels.) Sarg., Rosa rugosa Thunb. cult Hansa, Salix acutifolia Willd., Salix pentandra L., Shepherdia argentea Nutt., Sorbus americana Marsh., Syringa villosa Vahl., Ulmus americana L., and Ulmus pumila L. Simazine at 6.72 kg/ha gave 68% control of annual weeds and this was sufficient for the adequate growth of most of the tree and shrub species in this test. None of the species showed visible injury symptoms at any of the simazine rates tested, but the growth of some was reduced at the high simazine rate.

scholarly journals DYNAMICS OF ILLUMINANCE INCIDENT ON THE LANW SURFACE IN THE SHADE OF VARIOUS WOODY SPECIES

2019 ◽  
Vol 14 (2) ◽  
pp. 48-58
Author(s):  
L. A. Grechushkina‐Sukhorukova
Keyword(s):  
Tree Species ◽  
Betula Pendula ◽  
Woody Species ◽  
Larix Sibirica ◽  
Projective Cover ◽  
Urban Greening ◽  
Light Conditions ◽  
Hedera Helix ◽  
Abies Nordmanniana ◽  
Shade Tolerant Species

Aim. This paper is aimed at studying the relative light conditions (RLC) for lawns in the crown shade of light‐requiring and shade‐tolerant trees from the landscaping sites of Stavropol.Methods. The illuminance incident on the lawn surface was measured using a TKA‐LUX light meter from 7 a.m. to 5 p.m., every two hours.Results. It is shown that lawns under the crowns of light‐requiring tree species (Larix sibirica), received the highest RLC. During three calendar periods (22.05–15.06–18.09.2017, from 7 a.m. to 5 p.m.), its value amounted to 8.2‐9.2% (9.2% – at 1 p.m.); 4.6‐6.8% (6.8%); 7.0‐12.9% (12.9%). The projective cover of the lawns reached 75‐90%. In case of Betula pendula, the RLC values were as follows: 2.6‐3.7% (3.7%); 1.9‐3.2% (3.0%); 3.6‐5.7% (5.6%), with the projective cover amounting to 75‐90%. Under the crowns of shade‐tolerant species, Abies nordmanniana, the RLC values reached 1.0‐1.5% (1.0%), 0.6‐1.5% (0.6%), 0.7‐3.0 (0.7%), with the projective cover of lawns amounting to 10‐25%. For Aesculus hip‐ pocastanum, these values were equal to 0.6‐0.8% (0.6%); 0.6‐0.8% (0.6%); 9.0‐11.5% (11.2%), with dead patches being frequently formed. Projective cover values for shaded lawns correlate with the RLC value (r = 0.89).Conclusions. Under present conditions, ground covers consisting of Vinca minor shrubs and Hedera helix vines can be used in urban greening for intensively shaded sites. 

Blinker/macro-spicule activity in an off-limb polar region

2005 ◽  
Vol 436 (2) ◽  
pp. L43-L46 ◽  
Author(s):  
E. O'Shea ◽  
D. Banerjee ◽  
J. G. Doyle
Keyword(s):  
Polar Region
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