scholarly journals Comparison of nitrogenase and nitrate reductase activities in two nitrogen-fixing tree species: black alder (Alnus glutinosa) and black locust (Robinia pseudoacacia)

1989 ◽  
Vol 46 (Supplement) ◽  
pp. 772s-776s
Author(s):  
G. Pizelle ◽  
S. Benamar ◽  
F. Boutekrabt ◽  
G. Thiéry
Keyword(s):  
Nitrate Reductase ◽  
Tree Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Alnus Glutinosa ◽  
Nitrogen Fixing ◽  
Black Alder

Results of a Tree Species Trial on a Recontoured Surface Mine in Southwestern Virginia

1985 ◽  
Vol 9 (3) ◽  
pp. 150-153 ◽  
Author(s):  
J. L. Torbert ◽  
J. A. Burger ◽  
J. N. Lien ◽  
S. H. Schoenholtz
Keyword(s):  
Pinus Taeda ◽  
Tree Species ◽  
Populus Deltoides ◽  
Black Locust ◽  
Alnus Glutinosa ◽  
Black Alder ◽  
Platanus Occidentalis ◽  
Growing Seasons ◽  
Tenfold Increase ◽  
Strip Mine

Abstract Fifteen tree species, five pine and ten hardwood, were planted on a reclaimed, return-to-contour, strip-mine site in Wise County, Virginia. A systemic herbicide was sprayed on half of each of four experimental blocks prior to the second growing season. After three growing seasons, this treatment resulted in increased survival of five species. Black locust (Robina pseudoacacia) performed best with 90% survival and a tenfold increase in height. Other hardwoods that showed promise were black alder (Alnus glutinosa), sycamore (Platanus occidentalis), and cottonwood (Populus deltoides). As a group, the pines outperformed the hardwoods. Loblolly (Pinus taeda) and Virginia pine (Pinus Virginiana) were the fastest growing, and survival of each was signifcantly higher on the sprayed plots.

Analysis of the Inorganic Matter in Wood and Bark Proceeding from the Energetic Woodchips of the Plantation Grown Tree Species Robinia pseudoacacia via the AES-ICP

2016 ◽  
Vol 688 ◽  
pp. 218-225
Author(s):  
Ladislav Dzurenda ◽  
Ľubomir Pňakovič
Keyword(s):  
Tree Species ◽  
Black Locust ◽  
Chemical Elements ◽  
Robinia Pseudoacacia ◽  
Woody Biomass ◽  
Average Density ◽  
Inorganic Elements ◽  
A Value ◽  
Inorganic Matter ◽  
Poplar Trees

The paper presents the results of a quantitative analysis of the proportion of the following chemical elements: Ca, Mg, K, P, Mn, Zn and Fe in wood, bark and energetic woodchips produced from woody biomass of plantation grown clones: Ambiqua, Gori, Nyírségi, Rozaszin of the tree species Robinia pseudoacacia, which were cultivated by midi-rotation. Experimental works determined the average density of black locust wood ρ0W = 680.8 kg m-3 and of its bark ρ0B = 764.4 kg m-3. The AES-ICP technique determined the proportion of individual inorganic elements in dry wood and dry bark. The analyses show that the proportion of the analyzed inorganic elements in bark is 3.49 times higher than the proportion of these elements in wood. The largest proportion in the woody bark belongs to calcium, which proportion in wood is Ca = 3 965 mg.kg-1 and in bark is Ca = 18 698 mg.kg -1. Potassium shows also a higher proportion in bark than in wood with a value of K = 4 796 mg.kg-1, which is 1.73 times higher than in wood, Mg = 1 284 mg.kg-1, which is 2.81 times higher, phosphorus with the value P = 2 403 mg.kg-1, which is 4.04 times higher and iron Fe = 574 mg.kg-1 which is 4.86 times higher than in wood. Proportion of the analyses in energy woodchips is comparable to the proportion of these elements in the energy woodchips made of woody biomass produced from plantation grown clones of willow and alder. Woodchips made of black locust contain a higher proportion of calcium, it is by 25% higher than the upper limit of calcium in woody biomass from plantation grown poplar trees.

scholarly journals Research in the mechanization of black locust renewal and planting

2019 ◽  
Vol 13 (2) ◽  
pp. 6-11
Author(s):  
Tamás Major ◽  
Imre Czupy ◽  
Attila László Horváth ◽  
Viktória Papp ◽  
Andrea Tünde Kiss
Keyword(s):  
Tree Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Multiple Application ◽  
The Cost

Nowadays, the black locust (Robinia pseudoacacia) is the most current and the most widely used tree species in Hungary. Due to its penetration and the wide variety of application it’s worth to examine the different mechanization options of the reforestation technologies and their costs. We provided our research in the area of Nyírerdő Nyírségi Erdészeti Zrt. According to the tests it can be said, that the cost of the reforestations with root ripping is the most favourable and the reforestation or regeneration with planting costs the most. The disadvantage of the regeneration with root ripping is, that after its multiple application it can be observed the significantly degradation of the assortment composition and of the tree utilization income.

scholarly journals Effects of initial spacing on the stand structure and yield of young black locust (Robinia pseudoacacia L.) stands

2009 ◽  
Vol 15 (3) ◽  
Author(s):  
K. Rédei
Keyword(s):  
Tree Species ◽  
Early Phase ◽  
Stand Structure ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Wood Quality ◽  
Optimal Exploitation ◽  
Initial Spacing ◽  
Robinia Pseudoacacia L ◽  
The Right

The choice of the right initial spacing of stands is one of the most decisive operations of a successful afforestation. It is even more important in the case of fast growing tree species grown in plantations; it is expressed in their early phase of development and in wood quality. The results of a 5-year long experiment with four treatments will be presented in this paper. They proved the priority of an initial spacing of 1.61.0 m in the majority of quality This treatment has been proved optimal exploitation of growing space by the young trees.

scholarly journals Tree Species Distribution Change Study in Mount Tai Based on Landsat Remote Sensing Image Data

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 130 ◽  
Author(s):  
Yan Meng ◽  
Banghua Cao ◽  
Peili Mao ◽  
Chao Dong ◽  
Xidong Cao ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Species Distribution ◽  
Tree Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Remote Sensing Data ◽  
Image Data ◽  
Google Earth ◽  
Percentage Decrease ◽  
Forestry Resources

Located in the Mount Tai state-owned forest farm, this study adopted Landsat multispectral remote sensing data in 2000 and 2016 on the GEE (Google Earth Engine) platform and selected four phases of images each year according to the phenological period. By dealing with the current situation map of forestry resources in 2000 and the field survey data in 2016, the samples of tree species distribution in 2000 and 2016 were obtained. On the basis of topographic correction with the empirical rotation model, this study used the random forest (RF) classifier to classify tree species from remote sensing images in 2000 and 2016, achieving high classification accuracy. The results showed that, after 16 years of evolution, the percentage of pine species in the forest decreased from 55.69% to 50.22%, with a percentage decrease as high as 5.47%. The percentage of black locust (Robinia pseudoacacia) increased from 10.15% in 2000 to 13.75% in 2016, with an increase of 3.60%. Quercus also had a positive growth in the area. This result reflected the expansion of black locust.

scholarly journals Wood Surface Finishing of Selected Invasive Tree Species

2020 ◽  
Vol 71 (3) ◽  
pp. 271-280
Author(s):  
Matjaž Pavlič ◽  
Jure Žigon ◽  
Marko Petrič
Keyword(s):  
Tree Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Surface Hardness ◽  
European Beech ◽  
Surface Finishing ◽  
Horse Chestnut ◽  
Tung Oil ◽  
Invasive Tree ◽  
Invasive Tree Species

Due to their strong renewal power, the invasive tree species are spreading rapidly, especially in abandoned agricultural and forest areas and along traffic routes and water courses. One way of their restriction is the promotion of their use. In our research, we investigated surface finishing of wood of five selected invasive species in Slovenia, Box elder (Acer negundo L.), Black locust (Robinia pseudoacacia L.), Horse-chestnut (Aesculus hippocastanum L.), Honey locust (Gleditsia triacanthos L.) and Chinese sumac (Ailanthus altissima (Mill.) Swingle), and compared it with the finishing of the European beech (Fagus sylvatica L.) wood. For coatings, we selected one-component waterborne finish on acrylate-polyurethane basis, one-component solventborne finish on polyurethane basis and tung oil as a natural finish. Several surface properties were investigated. We proved that surface hardness, resistance to impact and adhesion were very much related to interactions between the coating and the substrate, while resistance to cold liquids was only dependant on the type of the finish. It was also shown that, in general, finishing of woods of selected invasive tree species was not problematic. The only exception was Black locust wood on which tung oil cured very slowly.

Phosphorus forms in technosols afforested with N-fixing and non-N-fixing tree species 

2021 ◽  
Author(s):  
Katarzyna Sroka ◽  
Marcin Chodak ◽  
Marcin Pietrzykowski
Keyword(s):  
Scots Pine ◽  
Tree Species ◽  
Black Locust ◽  
Soil Samples ◽  
Silver Birch ◽  
Soil Horizon ◽  
Black Alder ◽  
Soil Substrate ◽  
Phosphorus Forms ◽  
Labile P

<p>Tree species capable of forming a symbiosis with N-fixing bacteria may affect P availability in reclaimed technosols. The objective of this study was to compare the effect of N-fixing tree species and non-N-fixing species on phosphorus forms in technosols developing from various materials. Soil samples were taken under black locust (Robinia pseudoaccaccia), black alder (Alnus glutinosa), silver birch (Betula pendula) and Scots pine (Pinus sylvestris) from two depths (0-5 cm and 5 – 20 cm). The soil substrates were fly ashes, sands and clays. In the soil samples measured were concentrations of total P (P<sub>t</sub>),  water soluble P (P<sub>H2O</sub>),  dilute salt-extractable P (P<sub>ex</sub>), microbial biomass P (P<sub>mic</sub>) and total labile P (P<sub>labil</sub>). Multifactor ANOVA revealed that tree species did not influence contents of P<sub>t</sub>, P<sub>ex</sub> and P<sub>H20</sub>. However, there was a statistically significant effect of soil substrate and soil horizon on these forms of P. The factors tree species, soil substrate and soil horizon had statistically significant effect on P<sub>mic </sub>content whereas content of P<sub>labil</sub> was affected by tree species and soil horizon. Multiple Range Tests by tree species showed that soils under Scots pine contained significantly less P<sub>mic </sub>than soils under other tree species studied. There were no significant differences in P<sub>mic</sub> between the soils under silver birch, black alder and black locust. The soils under Scots pine contained also significantly less P<sub>labil</sub> than the soils under black locust and silver birch. Our study included P forms that are considered labile (except P<sub>t</sub>). The obtained results indicated that the effect of N-fixing trees on these forms of P was weak. Instead we noticed that Scots pine had negative effect on some forms of labile P. </p><p>The study was financed by The National Science Centre, Poland, grant No. 2018/31/B/ST10/01626.</p>

scholarly journals Impact of Tree Age and Size on Selected Properties of Black Locust (Robinia pseudoacacia L.) Wood

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 634
Author(s):  
Szymon Bijak ◽  
Hubert Lachowicz
Keyword(s):  
Compression Strength ◽  
Tree Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Basic Density ◽  
Ring Width ◽  
Tree Age ◽  
Dry Density ◽  
Robinia Pseudoacacia L ◽  
The Impact

Black locust (Robinia pseudoacacia L.) is a non-native tree species that occupies a remarkable area in the forests of western Poland. It is mainly cultivated for the bee-keeping purposes as well as for its high quality wood. We investigated the impact of tree age and diameter on the selected structural, physical and mechanical attributes of wood of black locust that grows in conditions of mesic oligotrophic site. We analysed 200 samples originating from 18 trees that varied with age (38, 60 and 71 years old) and diameter (thin, medium and thick specimen selected according to Hartig’s method). Individual wood properties were determined along with corresponding European or Polish standards. Structural and mechanical attributes were determined for moisture of 12%. We found significant impact of tree age on tree-ring width, latewood proportion, density, oven-dry density, basic density, share of woody substance, porosity, as well as radial, tangential, longitudinal and volumetric shrinkage, compression strength parallel to grain, static bending, coefficient of compression strength parallel to grain and coefficient of static bending. The older the trees, the higher values of individual attributes were observed. In turn, the effect of tree diameter was less profound and no significant impact of that feature was found for latewood proportion, anisotropy and almost all of the shrinkage parameters. Thin trees exhibited the lowest values of the analysed parameters, while medium ones—the highest. In general, the highest technical quality of the investigated wood can be found in the youngest trees, whose wood characterises with the properties significantly exceeding native Polish tree species such as oak or beech.

scholarly journals Health condition parameters for deciduous trees in the forest stands of Trostyanetske Forest Enterprise

2019 ◽  
pp. 129-137
Author(s):  
Valentyna Meshkova ◽  
Tetiana Pyvovar ◽  
Oleksandr Tovstukha
Keyword(s):  
Tree Species ◽  
Forest Health ◽  
Alnus Glutinosa ◽  
Condition Index ◽  
Health Condition ◽  
Forest Steppe ◽  
Left Bank ◽  
Epicormic Shoots ◽  
Black Alder ◽  
Tree Defoliation

The aim of research was to evaluate the variability and relations with forest health condition its main parameters (defoliation, dieback and epicormic shoots occurrence) in seven tree species: Norway maple (Acer platanoides L.), black alder (Alnus glutinosa L.), silver birch (Betula pendula Roth.), European ash (Fraxinus excelsior L.), English oak (Quercus robur L.), small-leaved lime (Tilia cordata Mill.), and white elm (Ulmus laevis Pall). Research was carried out in 2018 in Trostyanetske Forest Enterprise (Left-bank Forest Steppe; Sumy region). Diameter (DBH), Kraft class, and category of health condition were assessed for each tree. Defoliation, dieback and epicormic shoots occurrence were evaluated as proportion of trees with respective symptoms. Severity of each parameter of tree health condition was estimated using respective scores. No tree species is defoliated over 50%. A birch is characterized by the lowest health condition index (1.6) for living trees, dieback (10%), epicormic shoots occurrence (15.9%) and recently died trees proportion (0.7%), but high proportion of trees died over year ago (10.7%). An oak is characterized by the highest health condition index (2.1), proportion of trees with dieback (45.4%) and epicormic shoots (21.7%). Proportion of trees with dieback is 21.5 to 25% for alder, lime and maple, a bit higher for elm and ash (30.9 and 31.3% respectively). DBH, Kraft class, and health condition index significantly correlate with health condition parameters of analyzed tree species, but the most of correlations are very slight and slight. Correlation between health condition index and defoliation score is significant, positive and high for all tree species (from 0.78 for alder to 0.9 for birch). Correlation between health condition index and dieback score is positive and significant for all tree species, is slight for ash, birch, lime, and alder, and moderate for maple, oak and elm. Correlation between health condition index and epicormic shoots occurrence is significant and positive for all tree species except birch, but is very slight in all cases except elm, where it is slight.

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