scholarly journals Above-Ground Biomass of Black Locust (Robinia pseudoacacia L.) Trees and Stands

2017 ◽  
Vol 13 (2) ◽  
pp. 113-124
Author(s):  
Károly Rédei ◽  
János Gál ◽  
Zsolt Keserű ◽  
Borbála Antal
Keyword(s):  
Black Locust ◽  
Animal Feed ◽  
Robinia Pseudoacacia ◽  
Forest Products ◽  
Biomass Energy ◽  
Above Ground Biomass ◽  
Renewable Energy Resources ◽  
Long Term Effects ◽  
Ground Biomass ◽  
Individual Trees

Abstract The increasing demand for forest products, diminishing forest land areas, and general concern about the long-term effects of deforestation have increased the need for multipurpose tree species with rapid growth rates. Consequently, information on renewable energy resources is becoming increasingly crucial, and forest biomass determination is becoming a significant part of forestry. Black locust (Robinia pseudoacacia L.) is a fast growing, nitrogen fixing, stress tolerant species with durable and high quality wood that can be used for many purposes including wall panelling; vine props; furniture; pulp and paper; animal feed stock; bee forage; and biomass energy. This article presents the above-ground biomass of black locust, both for individual trees and for stands. Information concerning wet and absolute dry wood for stem, merchantable (d1.3 > 5 cm) and small (d 1.3 < 5 cm) wood, and for other tree parts (foliage, bark) for individual trees and for black locust stands are detailed in dendromass tables by six yield classes.

scholarly journals Linking floral biodiversity with nitrogen and carbon translocations in semi-natural grasslands in Lithuani

2015 ◽  
Vol 34 (2) ◽  
pp. 137-146
Author(s):  
Saulius Marcinkonis ◽  
Birutė Karpavičienė ◽  
Michael A. Fullen
Keyword(s):  
Plant Cover ◽  
Chemical Properties ◽  
Above Ground Biomass ◽  
Long Term Effects ◽  
Specific System ◽  
Ground Biomass ◽  
Natural Grasslands ◽  
Below Ground ◽  
Grassland Communities

AbstractThe aim of the present study is to evaluate the long-term effects of long-term piggery effluent application on semi-natural grassland ecotop-phytotop changes (above- and below-ground phytomass production, and carbon and nitrogen allocation in grassland communities) in relation to changes (or variability) in topsoil properties. Analysis of phytomass distribution in piggery effluent irrigated grassland communities showed that dry biomass yield varied from 1.7−5.3 t ha-1. Variability in soil and plant cover created a unique and highly unpredictable site specific system, where long-term anthropogenic influences established successor communities with specific characteristics of above- and below-ground biomass distribution. These characteristics depend more on grassland communities than on soil chemical properties. Families of grasses (Poaceae) dominated the surveyed communities and accumulated most carbon and least nitrogen, while legumes accumulated most nitrogen and lignin and least carbon. Carbon concentrations in above-ground biomass had minor variations, while accumulation of nitrogen was strongly influenced by species diversity (r = 0.94, n = 10, p <0.001) and production of above-ground biomass

Estimating above-ground biomass of individual trees with terrestrial laser scanner and 3D quantitative structure modelling

2021 ◽  
Vol 83 (1) ◽  
pp. 56-68
Author(s):  
Tasiyiwa P Muumbe ◽  
Paradzayi Tagwireyi ◽  
Pride Mafuratidze ◽  
Yousif Hussin ◽  
Louise van Leeuwen
Keyword(s):  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
Quantitative Structure ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
Individual Trees

scholarly journals The Geographical Distribution Of The Black Locust (Robinia Pseudoacacia L.) In Poland And Its Role On Non-Forest Land

2015 ◽  
Vol 22 (1) ◽  
pp. 101-113 ◽  
Author(s):  
Tomasz Wojda ◽  
Marcin Klisz ◽  
Szymon Jastrzębowski ◽  
Marcin Mionskowski ◽  
Iwona Szyp-Borowska ◽  
...  
Keyword(s):  
Native Species ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Biomass Energy ◽  
Forest Land ◽  
Natural Habitats ◽  
Nectar Production ◽  
Entire Country ◽  
Energy Plantations ◽  
Robinia Pseudoacacia L

AbstractThe black locust (Robinia pseudoacaciaL.) has been present in Poland for more than 200 years now, its range coming to encompass the entire country, albeit with a particular concentration of occurrence in the west. Overall, it is present in 3.4% of the stands making up Poland’s “State Forests National Forest Holding” (Państwowe Gospodarstwo Leśne Lasy Państwowe), and is the dominant species in 0.1% of stands. Thanks to its producing durable wood of favourable energetic properties, this species is used in medium-rotation (≤ 40-year) plantations as well as in biomass energy plantations (where there is a 5–7-year rotation). In terms of its nectar production, the black locust is second only to lime as the Polish tree best serving the production of honey. While the species shows marked expansiveness in Poland, it has not thus far been placed on the list of aliens capable of threatening native species or natural habitats. Breeding of the species has been engaged in – if to only a limited extent – in Poland for some 20 years now, and 2 selected seed stands have been registered, as well as 34 plus trees and 2 seed orchards.

scholarly journals Effect of thinning on the diameter increment in black locust (Robinia pseudoacacia L.) stands

2000 ◽  
Vol 65 ◽  
Author(s):  
K. Redei ◽  
H. Meilby
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Stand Density ◽  
Control Plot ◽  
The Other ◽  
Diameter Growth ◽  
Diameter Increment ◽  
The Past ◽  
Robinia Pseudoacacia L ◽  
Individual Trees

Black  locust is one of the most important stand forming species in Hungary,  covering    approximately 20% of the forested land (340 thousand ha) and providing 25%  of the annual    timber cut of the country. Hence, during the past two decades several  experiments with this    species have been carried out. This paper investigates the influence of  thinning on the diameter    increment in an experiment including four plots. One plot was left as an  unthinned control plot    and three plots were thinned with various thinning intensities at age 22.  The experiment was    measured at ages 22, 27, 32, and 36. Apparently the thinning intensities  applied on two of the plots did not come up to the intensity required to influence the diameter growth of the remaining    upper-storey trees. Therefore, for a given tree size the growth of the  trees on these two plots did    not differ significantly from the growth of similar trees in the unthinned  plot. By contrast,    significant thinning effects on the diameter increment of individual trees  were observed on the    most heavily thinned plot. Here the diameter increment was enhanced for  trees with diameters of    less than 20 cm, whereas the largest trees of the stand exhibited reduced  growth. Apparently a    stand density corresponding to the heavy thinning treatment (Fw values of 22-23) is  required to    get a significant thinning response. On the other hand, to avoid thinning  shocks, it may be    recommendable to apply two moderate thinning treatments instead of a single  heavy one.

ESTIMATION OF ABOVE GROUND BIOMASS OF THE THREE SITES (GRAZED SITE, PROTECTED SITE AND SEED SOWN SITE) FOR COMPARING THEIR PRODUCTIVITY IN KASHMIR VALLEY

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AFSHAN ANJUM BABA ◽  
SYED NASEEM UL-ZAFAR GEELANI ◽  
ISHRAT SALEEM ◽  
MOHIT HUSAIN ◽  
PERVEZ AHMAD KHAN ◽  
...  
Keyword(s):  
Protected Areas ◽  
Aboveground Biomass ◽  
Plant Biomass ◽  
Summer Season ◽  
Above Ground Biomass ◽  
Spring Season ◽  
Kashmir Valley ◽  
Ground Biomass ◽  
Maximum Value ◽  
Protected Site

The plant biomass for protected areas was maximum in summer (1221.56 g/m2) and minimum in winter (290.62 g/m2) as against grazed areas having maximum value 590.81 g/m2 in autumn and minimum 183.75 g/m2 in winter. Study revealed that at Protected site (Kanidajan) the above ground biomass ranged was from a minimum (1.11 t ha-1) in the spring season to a maximum (4.58 t ha-1) in the summer season while at Grazed site (Yousmarag), the aboveground biomass varied from a minimum (0.54 t ha-1) in the spring season to a maximum of 1.48 t ha-1 in summer seasonandat Seed sown site (Badipora), the lowest value of aboveground biomass obtained was 4.46 t ha-1 in spring while as the highest (7.98 t ha-1) was obtained in summer.

scholarly journals The climatic imprint of bimodal distributions in vegetation cover for western Africa

2016 ◽  
Vol 13 (11) ◽  
pp. 3343-3357 ◽  
Author(s):  
Zun Yin ◽  
Stefan C. Dekker ◽  
Bart J. J. M. van den Hurk ◽  
Henk A. Dijkstra
Keyword(s):  
Land Cover ◽  
Congo Basin ◽  
Shortwave Radiation ◽  
Mean Annual Precipitation ◽  
Above Ground Biomass ◽  
Precipitation Regime ◽  
Ground Biomass ◽  
Western Africa ◽  
Precipitation Regimes ◽  
Woody Cover

Abstract. Observed bimodal distributions of woody cover in western Africa provide evidence that alternative ecosystem states may exist under the same precipitation regimes. In this study, we show that bimodality can also be observed in mean annual shortwave radiation and above-ground biomass, which might closely relate to woody cover due to vegetation–climate interactions. Thus we expect that use of radiation and above-ground biomass enables us to distinguish the two modes of woody cover. However, through conditional histogram analysis, we find that the bimodality of woody cover still can exist under conditions of low mean annual shortwave radiation and low above-ground biomass. It suggests that this specific condition might play a key role in critical transitions between the two modes, while under other conditions no bimodality was found. Based on a land cover map in which anthropogenic land use was removed, six climatic indicators that represent water, energy, climate seasonality and water–radiation coupling are analysed to investigate the coexistence of these indicators with specific land cover types. From this analysis we find that the mean annual precipitation is not sufficient to predict potential land cover change. Indicators of climate seasonality are strongly related to the observed land cover type. However, these indicators cannot predict a stable forest state under the observed climatic conditions, in contrast to observed forest states. A new indicator (the normalized difference of precipitation) successfully expresses the stability of the precipitation regime and can improve the prediction accuracy of forest states. Next we evaluate land cover predictions based on different combinations of climatic indicators. Regions with high potential of land cover transitions are revealed. The results suggest that the tropical forest in the Congo basin may be unstable and shows the possibility of decreasing significantly. An increase in the area covered by savanna and grass is possible, which coincides with the observed regreening of the Sahara.

Above-ground biomass estimation of Indian tropical forests using X band Pol-InSAR and Random Forest

2021 ◽  
Vol 21 ◽  
pp. 100462
Author(s):  
Sadhana Yadav ◽  
Hitendra Padalia ◽  
Sanjiv K. Sinha ◽  
Ritika Srinet ◽  
Prakash Chauhan
Keyword(s):  
Random Forest ◽  
Tropical Forests ◽  
Biomass Estimation ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
X Band
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