scholarly journals Uporabnost lesnih ostankov tujerodnih invazivnih drevesnih vrst za proizvodnjo peletov

Les/Wood ◽  
2021 ◽  
Vol 70 (1) ◽  
Author(s):  
Dominika Gornik Bučar ◽  
Peter Prislan ◽  
Pavel Smolnikar ◽  
Darja Stare ◽  
Nike Krajnc ◽  
...  
Keyword(s):  
Picea Abies ◽  
Robinia Pseudoacacia ◽  
Aesculus Hippocastanum ◽  
Ailanthus Altissima ◽  
Gleditsia Triacanthos ◽  
Acer Negundo

Na laboratorijski peletirni napravi smo izdelali pelete iz petih izbranih tujerodnih invazivnih drevesnih vrst, ki rastejo na območju Slovenije in sicer: divjega kostanja (Aesculus hippocastanum), amerikanskega javora (Acer negundo), robinije (Robinia pseudoacacia), trnate gledičevke (Gleditsia triacanthos) in velikega pajesena (Ailanthus altissima) ter mešanic surovine omenjenih tujerodnih invazivnih vrst s smrekovino (Picea abies) v razmerjih 70 : 30 in 50 : 50. Pod enakimi proizvodnimi pogoji smo skupno izdelali 15 različnih vrst peletov. Izdelanim peletom smo določili pomembnejše fizikalne in mehanske lastnosti (vsebnost vode, gostoto nasutja, mehansko obstojnost in vsebnost pepela). Rezultate smo primerjali z mejnimi vrednostmi, opredeljenimi v standardu SIST EN ISO 17225-2:2014. Vsebnost vode in gostota nasutja vseh izdelanih vrst peletov sta zadostili zahtevam standarda za razvrstitev v najvišji kakovostni razred A1. Mehanske obstojnosti izdelanih peletov niso dosegale zahtev standarda in niso presegale 96,5 % (kar je mejna vrednost za B razred). Rezultati kažejo, da imajo med izbranimi tujerodnimi invazivnimi drevesnimi vrstami največji potencial za nadaljnjo optimizacijo peletirnega postopka robinija, trnata gledičevka in visoki pajesen.

scholarly journals Urban Rivers as Dispersal Corridors: Which Factors Are Important for the Spread of Alien Woody Species along the Danube?

2020 ◽  
Vol 12 (6) ◽  
pp. 2185
Author(s):  
Sabrina Wagner ◽  
Dietmar Moser ◽  
Franz Essl
Keyword(s):  
Population Density ◽  
Robinia Pseudoacacia ◽  
Woody Species ◽  
Ailanthus Altissima ◽  
Fraxinus Pennsylvanica ◽  
Floodplain Forests ◽  
Urban Rivers ◽  
Urban Habitats ◽  
Acer Negundo ◽  
Gallery Forests

Cities are hotspots of invasions, and this is particularly the case for urban rivers, which are known to serve as corridors for the spread of alien plant species to floodplain forests. Here, we present a case study on woody (shrubs, trees) species invasions across a gradient from a metropolis (Vienna) to rural regions along the Danube River in eastern Austria. In total, we identified 44 native and 25 alien woody species in 75 plots. Five alien woody species occur in at least 10 plots. The most wide-spread ones were species of floodplain forests (Acer negundo, Fraxinus pennsylvanica, and Populus x canadensis), while Ailanthus altissima and Robinia pseudoacacia—which prefer dry sites—were recorded substantially less often. The average level of invasion—i.e., the relative proportion of alien to native woody species in plots—was high across all three study regions. Still, there was a moderate decline of alien woody species richness along the urban—peri-urban—rural gradient. Generalized Linear Mixed Models showed that population density and the proportion of urban habitats in the environs of the plots is significantly positively correlated with the presence of Acer negundo and Ailanthus altissima. Conversely, the occurrence of Robinia pseudoacacia is negatively correlated with surrounding population density and urban habitats. Occurrence of Acer negundo is positively correlated with urban habitats. For Fraxinus pennsylvanica, we found no significant relationships. Our results confirm that gallery forests at river banks are highly susceptible to invasions. We argue that managing alien woody species in urban and peri-urban sites is not appropriate and useful, given that re-invasion is likely in most cases (from adjacent urban green spaces). We acknowledge that this recommendation entails the implicit recognition that gallery forests along urban sections of the Danube will contain a substantial—and likely further increasing—proportion of alien woody species.

scholarly journals The non-native woody species of the flora of Ukraine: Introduction, naturalization and invasion

2019 ◽  
Vol 27 (3) ◽  
pp. 276-290 ◽  
Author(s):  
R. I. Burda ◽  
S. N. Koniakin
Keyword(s):  
Invasive Species ◽  
Seed Dispersal ◽  
Alien Species ◽  
Robinia Pseudoacacia ◽  
Woody Species ◽  
Plant Invasions ◽  
Ailanthus Altissima ◽  
Native Plant ◽  
Acer Negundo ◽  
Native Woody Species

The process of invasion, naturalization, dispersion and invasive activity of non-native woody species in 5 regional floras, 5 urban floras and over 30 floras of the protected areas is discussed. It has been established that 182 non-native species out of 95 genera and 45 families are currently at different naturalization stages in the spontaneous flora of Ukraine. In terms of life-forms, they may be divided as follows: trees – 41%, shrubs – 35%, trees/shrubs – 15%, lianas – 9%. Most species spread both via seed dispersal and the vegetative way – 56%, using only seed dispersal – 42%, only the vegetative way – 2%. According to the preliminary rating of species-wise invasive activity, 71 species (40%) have naturalized completely, among them 20 invasive species, including 12 transformer species, 29 potentially invasive species, and 22 naturalized species which demonstrate no invasive tendencies. The initial stages of invasion of 111 species are as follows: introduction – 9%, survival – 36%, adaptation of the reproductive sphere – 28%, establishment, formative of local populations – 27%. In terms of dispersion, non-naturalized species are divided as follows: rare – 45%, local – 16%, sporadic – 6%, unique – 12%, spreading under control beyond collections and expositions in botanical gardens and arboretums – 21%. Twelve transformer species, the greatest threat to local diversity, are Acer negundo, Ailanthus altissima, Amorpha fruticosa, Bupleurum fruticosum, Elaeagnus angustifolia, E. rhamnoides, Fraxinus ornus, Parthenocissus quinquefolia, P. vitacea, Robinia pseudoacacia, Rhamnus alaternus, Salix × blanda and 8 invasive proper species: Berberis aquifolia, Colutea orientalis, Daphne laureola, Prunus cerasifera, P. serotina, Quercus ilex, Viburnum tinus, Vitis vinifera. The list of alien species, most widespread in 50 regions of Europe, includes Robinia pseudoacacia (42 regions), Ailanthus altissima (40), Acer negundo (38), Prunus cerasus (34), Quercus rubra (34), Rosa rugosa (34), Prunus domestica (31). The mitigation of the impacts of these species on local biodiversity is possible via the restoration of local native plant communities, land use organization, strict selection of introduced species prior to the introduction, culture of planting management, preventive measures and extending awareness and sharing of information about plant invasions. Therefore, Ukraine’s spontaneous flora is notable for the active process of naturalization of non-native woody species with considerable involvement of invasive alien species. This is the first and preliminary evaluation of the invasive activity of woody species in Ukraine’s flora. The manifestations of the global tendency of increased involvement and invasive activity of alien woody species in domestic flora have been confirmed. These conclusions are also relevant for elaborating the system of preventive, containing and mitigating measures regarding plant invasions in Ukraine.

Биогеохимическая активность парковых насаждений как индикатор устойчивости древесных растений

2019 ◽  
pp. 40-54
Author(s):  
N.V. Ivanisova ◽  
L.V. Kurinskaya
Keyword(s):  
Woody Plants ◽  
Quercus Robur ◽  
Robinia Pseudoacacia ◽  
Fraxinus Excelsior ◽  
Aesculus Hippocastanum ◽  
Acer Platanoides ◽  
Populus Alba ◽  
Acer Negundo ◽  
Tilia Platyphyllos ◽  
Ulmus Laevis

The relevance of the research is related to the improvement of the sustainability of park stands of the Rostov region, which have historical significance and conservation status. The longterm monitoring of the accumulation of heavy metals contributes to the establishment of the biogeochemical role of woody plants. The purpose of the research is to identify the biogeochemical activity of parkland stands of the steppe zone based on the study of the species and age composition of woody plants and the biological absorption coefficients of heavy metals. The coefficient of biological absorption (CBP) reflects the degree of concentration of the element in plants compared with adjacent media. KBP the ratio of the content of the element in the dry matter to the content in the soil on which they grow. This coefficient characterizes the intensity of extraction of chemical elements from the soil. In this case, the PCU for each element is largely determined by both chemical properties and the need of plants. The objects of research are parklands of RostovonDon, Taganrog, Novocherkassk, Azov and Bataysk. They are represented by trees aged 4050 years (7580). Trees over the age of 50 years (25) are found in the city of Taganrog. On the territory of the parks of Bataysk, a fairly large percentage of plantations (37) are represented by trees up to 20 years. It has been established that the species composition of park stands is represented by 11 species (Quercus robur L., Aesculus hippocastanum L., Ulmus laevis Pall, Fraxinus excelsior L., Fraxinus lanceolata Borkh, Robinia pseudoacacia L., Tilia platyphyllos Scop, Acer platanoides L., Acer negundo L., Populus alba L., Populus sowietica pyramidalis Jabl.) from 8 families (Fagaceae, Hippocastanaceae, Ulmaceae, Oleaceae, Fabaceae, Tiliaceae, Aceraceae, Salicaceae). Revealed dominant species in the park landscapes of the studied cities. Based on the monitoring of the park landscapes of the city of RostovonDon, it was revealed that during the growing season, the largest amount of metals deposited on the leaf surfaces of maple and linden. The selectivity of metal deposition by individual species is manifested in the accumulation of certain metals by them. On all studied objects (20022018), total accumulation of heavy metals by leaves of woody plants was calculated. The maximum coefficients of biological absorption were established: according to Zn(Populus sowietica pyramidalis, Populus alba, Ulmus laevis) Cu (Fraxinus excelsior, Aesculus hippocastanum, Quercus robur) Ni (Acer platanoides, Populus alba, Ulmus laevis). The minimum coefficient of biological absorption is set for Zn and Cu for Acer negundo, for Ni Tilia platyphyllos. A register of woody plants has been compiled to reduce the biogeochemical activity coefficient: Fraxinus excelsior Populus sowietica pyramidalis Populus alba (0,4) Aesculus hippocastanum Quercus robur (0,3) Acer platanoides Tilia platyphyllos Ulmus laevis Robinia pseudoacaciaia (0,2) Acer negundo Fraxinus lanceolata (0,1). Thus, the content of macroelements in plants has been established, which is determined by the systematic position family, genus and species. The parameters of the coefficients of biological absorption, and their dynamics depending on time (for example, the vegetation phase), the age of the organism, the soil, are recommended to be used as indicators of sustainability and selection of the assortment when renovating historical park landscapes. Актуальность исследований связана с повышением устойчивости парковых насаждений Ростовской области, которые имеют историческое значение и природоохранный статус. Проведение многолетнего мониторинга по накоплению тяжелых металлов вносит вклад в установлении биогеохимической роли древесных растений. Цель исследований выявление биогеохимической активности парковых насаждений степной зоны на основе изучения видового, возрастного состава древесных растений и коэффициентов биологического поглощения тяжелых металлов. Коэффициент биологического поглощения (КБП) отражает степень концентрации элемента в растениях по сравнению с сопредельными средами. КБП отношение содержания элемента в сухом веществе к содержанию в почве, на которой они произрастают. Этот коэффициент характеризует интенсивность извлечения химических элементов из почвы. При этом КБП для каждого элемента во многом определяется как химическими свойствами, так и потребностью растений. Объекты исследований парковые насаждения РостованаДону, Таганрога, Новочеркасска, Азова и Батайска. Они представлены деревьями в возрасте от 4050 лет (7580). Деревья в возрасте более 50 лет (25) встречаются на территории города Таганрога. На территории парков г. Батайска довольно большой процент насаждений (37) представлен деревьями до 20 лет. Установлено, что видовой состав парковых насаждений представлен 11 видами (Quercus robur L., Aesculus hippocastanum L., Ulmus laevis Pall, Fraxinus excelsior L., Fraxinus lanceolata Borkh, Robinia pseudoacacia L., Tilia platyphyllos Scop, Acer platanoides L., Acer negundo L., Populus alba L., Populus sowietica pyramidalis Jabl.) из 8 семейств (Fagaceae, Hippocastanaceae, Ulmaceae, Oleaceae, Fabaceae, Tiliaceae, Aceraceae, Salicaceae). Выявлены доминирующие виды в парковых ландшафтах изучаемых городов. На основе мониторинга парковых ландшафтах города РостованаДону выявлено, что за вегетационный период в наибольшее количество металлов осаждалось на листовых поверхностях клёна и липы. Избирательность осаждений металлов отдельными видами проявляется в накоплении ими определённых металлов. На всех изученных объектах (20022018 гг.) были рассчитаны суммарные показатели накопления тяжёлых металлов листьями древесных растений. Установлены максимальные коэффициенты биологического поглощения: по Zn (Populus sowietica pyramidalis, Populus alba, Ulmus laevis) по Cu (Fraxinus excelsior, Aesculus hippocastanum, Quercus robur) по Ni (Acer platanoides, Populus alba, Ulmus laevis). Минимальный коэффициент биологического поглощения установлен по Zn и Cu для Acer negundo, по Ni Tilia platyphyllos. Составлен реестр древесных растений по снижению коэффициента биогеохимической активности: Fraxinus excelsior Populus sowietica pyramidalis Populus alba (0,4) Aesculus hippocastanum Quercus robur (0,3) Acer platanoides Tilia platyphyllos Ulmus laevis Robinia pseudoacacia (0,2) Acer negundo Fraxinus lanceolata (0,1). Таким образом, установлено содержание макроэлементов в растениях, которое определяется систематическим положением семейством, родом и видом. Параметры коэффициентов биологического поглощения, и их динамика в зависимости от времени (например, фазы вегетации), возраста организма, почв рекомендуется использовать в качестве индикаторов устойчивости и подбора ассортимента при реновации исторических парковых ландшафтов.

Compositional changes in cotyledons of woody angiosperms

1976 ◽  
Vol 54 (21) ◽  
pp. 2473-2477 ◽  
Author(s):  
P. E. Marshall ◽  
T. T. Kozlowski
Keyword(s):  
Robinia Pseudoacacia ◽  
Dry Weight ◽  
Ailanthus Altissima ◽  
Fraxinus Pennsylvanica ◽  
Acer Negundo ◽  
Lipid Contents ◽  
Compositional Changes ◽  
Robinia Pseudoacacia L ◽  
Food Reserves ◽  
Carbohydrate Contents

The nature and rate of breakdown of food reserves in cotyledons varied markedly among species. Embryonic cotyledons of Acer negundo L. stored mostly proteins, whereas those of Ailanthus altissima (Mill.) Swingle were fat-storing. Fraxinus pennsylvanica Marsh, cotyledons contained nearly equal quantities of lipids and proteins (45% of dry weight for each) as did those of Robinia pseudoacacia L. (25% dry weight for each). Total nonstructural carbohydrate contents of embryonic cotyledons of Acer and Robinia (exalbuminous species) were considerably higher than those of Ailanthus or Fraxinus (albuminous species). Carbohydrate contents of Acer and Robinia cotyledons initially decreased, but carbohydrate contents of all four species increased rapidly as cotyledons became chlorophyllous and photosynthetic. Synthesis of cotyledonary chlorophyll and emergence of cotyledons occurred faster for seedlings of Acer and Robinia than for those of Ailanthus and Fraxinus. Protein and lipid contents of cotyledons of all four species declined as cotyledons matured after germination.

Spontaneous forest communities of introduced species in Kryvyi Rih area

2020 ◽  
Vol 49 ◽  
pp. 3-16
Author(s):  
I. I. Korshіkov ◽  
Y. M. Petrushkevych ◽  
S. I. Shkuta
Keyword(s):  
Invasive Species ◽  
Woody Plants ◽  
Robinia Pseudoacacia ◽  
Ailanthus Altissima ◽  
Acer Platanoides ◽  
Rhamnus Cathartica ◽  
Ulmus Pumila ◽  
Acer Negundo ◽  
Trunk Diameter ◽  
North Western

The article is devoted to the study of woody plants communities, that spontaneously form in the abandoned areas of Kryvyi Rih Area as a result of spontaneous-invasive settling of species in previously established plantations. For the study, we laid 16 trial plots in 5 growth sites of such communities. We determined the species composition and biometric characteristics of primary woody plants and those, that formed these communities due to the invasion. In the first such community, which was formed due to the settling of other species in a 40-year-old plantation of Salix alba L., we found on 3 plots with an area of 625 m2 94 medium-sized trees Acer negundo L. having height (h) 11.8–13.6 m, trunk diameter (D) 16.8–17.3 cm and crown projection area (S) 9.5–10.4 m2, as well as 210 young generative trees, their height varies between 6.5–7.3 m, trunk diameter 5.0–5.4 cm, and the projection of the crown 2.5–6.3 m2. In this community also grow young and medium-generative trees of Robinia pseudoacacia L. – respectively 7 individuals – h = 7.2–11.7 m, D = 8.1–10.7 cm, S = 6.1–6.5 m2 and 7 ones – h = 13.5–14.0 m, D = 18.1–27.0 cm, S = 14.0–38.5 m2. Among self-seeding plants, such species predominate: Acer platanoides L. – 3905 specimens and Acer negundo – 1823 specimens. Three species dominate in the three dense forestation massive near the highway, which occupy an area of 250 m2: Robinia pseudoacacia, Ulmus pumila L., Fraxinus excelsior L. and Cerasus avium (L.) Moench. Robinia pseudoacacia is the most common among medium-generative plants, and Acer negundo, A. platanoides, A. tataricum L. – among young generative plants. Self-seeding of Robinia pseudoacacia, Acer platanoides, Fraxinus excelsior and Acer negundo is dominated in this area. In the abandoned Ulmus pumila plantation near the iron ore mine in three areas with an area of 625 m2, 12 to 33 specimens of medium-generative trees of this species with a height of 12.2–13.1 m with a trunk diameter of 14.7–16.0 cm and a crown projection of 25, 5–27.3 m2. Its self-seeding is quite active in all areas. Self-seeding plants of Acer negundo are also present here – 51 specimens and Acer platanoides – 35 ones. Self-seeding plants of A. platanoides – 9837 specimens, A. pseudoplatanus – 2111 specimens, Ailanthus altissima (Mill.) Swingle – 396 specimens dominate in the neglected park on the territory of 500 m2, where Acer pseudoplatanus, Acer platanoides, Robinia pseudoacacia grow. A study was also carried out on the example of the Zelena gully in order to determine how invasive species spontaneously penetrate into the formed steppe feathergrass-fescue phytocenoses. In the upper part of the Zelena gully, located outside of Kryvyi Rih, more than 40 years ago, forest belts were created from many species of shrubs, which have already been listed. Crataegus fallacina Klokov and Rhamnus cathartica L. diffusely inhabit and clearly predominate in the 6 trial plots that were laid on the slopes of the south-eastern and north-western exposures. In the presence of a large number of seed donors from the previously mentioned species on the slopes of the gully firstly Crataegus fallacina settles. Morphometric parameters of shrubs of these species were slightly larger on the north-western slope than on the south-eastern: the height of Crataegus fallacina – 2.5–2.9 m, and the diameter of the crown – 3.5–4.3 m, while in Rhamnus cathartica – the height of the bush was 0.7–0.8 m, and the diameter of the crown – 0.5–1.1 m. Thus, invasive species of Ulmus pumila, Acer negundo, Robinia pseudoacacia and Ailanthus altissima, which are the main in spontaneous communities in abandoned anthropogenically disturbed areas of the city, do not penetrate into stable phytocenoses. Most of these species of woody plants show low invasive activity and do not form multispecies communities in weakly disturbed feather-fescue phytocenoses.

scholarly journals Інвентаризація та оцінювання стану насаджень скверу біля обеліску слави в селі Межирічка

2019 ◽  
Vol 29 (6) ◽  
pp. 32-35
Author(s):  
S. A. Adamenko
Keyword(s):  
Picea Abies ◽  
Robinia Pseudoacacia ◽  
Pinus Nigra ◽  
Acer Negundo ◽  
Robinia Pseudoacacia L

Досліджено видовий склад дендрофлори скверу обеліску Слави в с. Межирічка Голованівського району Кіровоградської області. Виявлено, що на території парку зростає 34 екземпляри хвойних і листяних деревних порід. Переважно це Acer negundo L. та Robinia pseudoacacia L., інші листяні перебувають у меншій кількості. З хвойних порід присутні Pinus nigra Arn. та Picea abies L. Оцінено відповідність вимог дерев до екологічних умов території скверу. Згідно з результатами дослідження, усі екземпляри належать до ослаблених дерев та за шкалою Л. П. Рисіна отримують оцінку 1. За відношенням до вмісту поживних елементів у ґрунті найчисельнішою є група мезотрофів. Відносно вибагливості рослин до освітлення, за С. С. П'ятницьким, найбільшу групу складають світлолюбні (малотіньовитривалі) – 50 %. Обстеження насаджень на наявність ураження хворобами та шкідниками показало, що їхніх відсоток знаходиться в межах 35 %. Найбільше уражень хворобами мали такі деревні породи, як T. cordata та J. regia. Найпоширенішими серед комах є мінуюча міль та гусінь кукурудзяного (стеблового) метелика. З оцінки життєздатності деревних насаджень скверу для встановлення відповідності умовам зростання видно, що 73,5 % від їх загальної кількості знаходяться в задовільному стані. Встановлено, що сквер перебуває у відносно задовільному стані. Для покращання його декоративних якостей і повноцінного виконання ними всіх передбачуваних функцій надано відповідні рекомендації.

scholarly journals Complex effect of Robinia pseudoacacia L. and Ailanthus altissima (Mill.) Swingle growing on asbestos deposits: Allelopathy and biogeochemistry

2020 ◽  
Vol 85 (1) ◽  
pp. 141-153
Author(s):  
Filip Grbovic ◽  
Gordana Gajic ◽  
Snezana Brankovic ◽  
Zoran Simic ◽  
Nenad Vukovic ◽  
...  
Keyword(s):  
Trifolium Pratense ◽  
Robinia Pseudoacacia ◽  
Ailanthus Altissima ◽  
Allelopathic Potential ◽  
Carbon And Nitrogen ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
Phenolics Content ◽  
Highly Correlated ◽  
Robinia Pseudoacacia L

Asbestos is widely mined and used around the globe posing a great risk to environment and human health. The main objective of this study was to determine allelopathic potential of Robinia pseudoacacia L. and Ailanthus altissima (Mill.) Swingle growing on the asbestos deposits at abandoned mine ?Stragari? in central Serbia. The pH, content of carbon, nitrogen, calcium carbonate, available phosphorous and potassium, content of Fe, Ni, Cu, Zn, Pb, Mn, and phenolics were analyzed in the control asbestos (zones without vegetation cover) and plant rhizospheric asbestos. Allelopathic activity of plant species was assessed by ?rhizosphere soil method?, and Trifolium pratense L. and Medicago sativa L. were used as the indicator species. A. altissima showed higher allelopathic potential compared to R. pseudoacacia for T. pratense and M. sativa due to greater content of phenolics. Alleopathic activity of phenolics in rhizospheric asbestos was highly correlated with pH, content of carbon and nitrogen, available phosphate and potassium, and content of Ni, Cu, Zn, Pb and Mn. A. altissima increased phenolics content in rhizospheric asbestos inhibiting the plant growth. This woody plant in spite of high allelopathic potential is suitable for revegetation of distrurbed ecosystems because it initiates pedogenesis and affects the asbestos chemistry.

scholarly journals ФІТОТОКСИЧНІ ВЛАСТИВОСТІ ДЕЯКИХ ДЕРЕВНИХ РОСЛИН

World Science ◽  
2019 ◽  
Vol 1 (3(43)) ◽  
pp. 40-45
Author(s):  
Мегалінська Г. П. ◽  
Пакірбаєва Л. В. ◽  
Білик Ж. І. ◽  
Даниленко Є. В. ◽  
Гатальська Є. О.
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Robinia Pseudoacacia ◽  
Water Extract ◽  
Populus Tremula ◽  
Allelopathic Effect ◽  
Carpinus Betulus ◽  
Phytotoxic Activity

The results of the study of phytotoxic effects of water extracts from Pinus sylvestris L., Betula pendula Roth, Quercus robur L., Picea abies (L.) Karst. P. excelsa Link, Carpinus betulus L., Robinia pseudoacacia L., Populus tremula L., Crataegus submollis L. are presented. For а comparison of the phytotoxic activity of the investigated plants was used to measure the change in the intensity of the mitotic division, depending on the concentration of aqueous extraction of plant material (tangent trend curve of cytostatic activity). According to this parameter, the following row of phytotoxic activity of wood species can be ordered: Populus tremula, Betula pendula, Robinia pseudoacacia, Carpinus betulus, Acer platanoides, Tilia cordata, Pinus sylvestris. Water extract Quercus robur and Picea abies have discovered a phyto-stimulating effect. The results of the study allow us to discuss the possibility of introducing the parameter of the phytotoxicity coefficient to determine the allelopathic effect in the tree-tree system.

Impacts of the alien trees Ailanthus altissima (Mill.) Swingle and Robinia pseudoacacia L. on soil nutrients and microbial communities

2016 ◽  
Vol 96 ◽  
pp. 65-73 ◽  
Author(s):  
S. Medina-Villar ◽  
S. Rodríguez-Echeverría ◽  
P. Lorenzo ◽  
A. Alonso ◽  
E. Pérez-Corona ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Nutrients ◽  
Robinia Pseudoacacia ◽  
Ailanthus Altissima ◽  
Robinia Pseudoacacia L
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