scholarly journals Impact of Stand Density and Tree Social Status on Aboveground Biomass Allocation of Scots Pine Pinus sylvestris L.

Forests ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 765
Author(s):  
Bogdan Wertz ◽  
Mariusz Bembenek ◽  
Zbigniew Karaszewski ◽  
Wojciech Ochał ◽  
Maciej Skorupski ◽  
...  

Stand density changes due to aging and thinning interventions. At the same time, the social status of trees develops and varies due to different genetic conditions as well as access to nutrients and light. Trees growing in diverse conditions gain their social status in the stand, which, in the end, influences their development and biomass allocation. The objective of this research was to discover if stand density or tree social status has an impact on a tree’s aboveground biomass allocation. The study was carried out in five premature and five mature pine stands, growing in the same soil conditions. The selected sample stands had a different growing density, from low to high. In each sample stand, 10 trees were selected to represent a different social status, according to the Schädelin classification. There were 100 trees felled in total (50 in the premature stands and 50 in the mature stands), for which the dry biomass of the stem, living and dead branches, needles, and cones was determined. The results showed that stand density only had an impact on the branches’ biomass fraction but not the stem and foliage fractions, while social status had an impact on all the fractions. Dominant and codominant trees, as well as those with developed crowns, had a smaller share of the stem and higher share of branches in comparison with trees of a lower social status.

Dendrobiology ◽  
2014 ◽  
Vol 72 ◽  
pp. 139-150 ◽  
Author(s):  
Andrzej M. Jagodziński ◽  
Izabela Kałucka ◽  
Paweł Horodecki ◽  
Jacek Oleksyn

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 240 ◽  
Author(s):  
Andrzej Węgiel ◽  
Krzysztof Polowy

Background and Objectives: The continuous increase in the amount of atmospheric CO2 is a factor that significantly contributes to global warming. Forests can be used to mitigate climate change by absorbing carbon and storing it. Scots pine (Pinus sylvestris L.) is the most abundant tree species in Polish forests and can substantially aid carbon accumulation. The aim of the study was to determine the carbon content in the dry mass of various parts of Scots pine trees and to evaluate the relationship between the accumulation of carbon in aboveground tree biomass and some stand parameters. Materials and Methods: The research was carried out in 20 even-aged (81–90 years old) Scots pine stands in northwestern Poland (Drawno Forest District). The densities of these stands ranged from 476 to 836 trees per hectare. The aboveground biomass was calculated as the sum of the following tree compartments: stem (wood and bark), dead branches, thick branches, thin branches and needles. The carbon content and storage in these compartments was determined. Results: The mean carbon content was lowest in stem wood (47.0%) and highest in needles (50.3%). No correlation between the stand density and the level of carbon stored in the aboveground biomass of Scots pines was found.


2020 ◽  
Vol 66 (No. 5) ◽  
pp. 197-207 ◽  
Author(s):  
Vilém Podrázský ◽  
Zdeněk Vacek ◽  
Stanislav Vacek ◽  
Jan Vítámvás ◽  
Josef Gallo ◽  
...  

Scots pine (Pinus sylvestris L.) is one of the most important tree species in Eurasia. During the past centuries, it has been extensively introduced into artificial monocultures, but is currently experiencing a number of problems related to climate change and extreme droughts. There is a large-scale disintegration of its stands and, in addition to its replacement by other native trees, it is possible to use a wide range of introduced species of the same genus. The aim of the investigation was to compare production parameters, structure and diversity of pine stands at the age of 35 years in school Arboretum of Faculty of Forestry and Wood Science in Central Bohemia (320 m a.s.l., medium rich habitats, water deficit site). Seven species of pine were compared: ponderosa pine (Pinus ponderosa Douglas ex C. Hawson), Jeffrey pine (Pinus jeffreyi Balf.), black pine (Pinus nigra J.F.Arnold), eastern white pine (Pinus strobus L.), Lodgepole pine (Pinus contorta Douglas), Macedonian pine (Pinus peuce Griseb.) and the only native Scots pine. The results showed that significantly (P < 0.001) highest height, diameter at breast height and mean stem volume were achieved in Pinus ponderosa and P. strobus stands, while these parameters were lowest in P. peuce and P. nigra. In contrast, the lowest stand volume was calculated for P. strobus (112 m3·ha–1) due to the lower stand density, while the highest production was again in P. ponderosa (430 m3·ha–1). In terms of structural variability, the highest diversity was found in P. jeffreyi and P. peuce. The introduced pine species, especially P. ponderosa, could therefore play an important role in terms of production and economic potential and even replace native P. sylvestris on suitable sites.


2016 ◽  
Vol 2 (2) ◽  
pp. 158-182 ◽  
Author(s):  
Min Zhou ◽  
Xiangyi Li

We consider cross-space consumption as a form of transnational practice among international migrants. In this paper, we develop the idea of the social value of consumption and use it to explain this particular form of transnationalism. We consider the act of consumption to have not only functional value that satisfies material needs but also a set of nonfunctional values, social value included, that confer symbolic meanings and social status. We argue that cross-space consumption enables international migrants to take advantage of differences in economic development, currency exchange rates, and social structures between countries of destination and origin to maximize their expression of social status and to perform or regain social status. Drawing on a multisited ethnographic study of consumption patterns in migrant hometowns in Fuzhou, China, and in-depth interviews with undocumented Chinese immigrants in New York and their left-behind family members, we find that, despite the vulnerabilities and precarious circumstances associated with the lack of citizenship rights in the host society, undocumented immigrants manage to realize the social value of consumption across national borders and do so through conspicuous consumption, reciprocal consumption, and vicarious consumption in their hometowns even without being physically present there. We conclude that, while cross-space consumption benefits individual migrants, left-behind families, and their hometowns, it serves to revive tradition in ways that fuel extravagant rituals, drive up costs of living, reinforce existing social inequality, and create pressure for continual emigration.


2020 ◽  
Vol 15 (4) ◽  
pp. 4-32
Author(s):  
Le Hoang Anh Thu

This paper explores the charitable work of Buddhist women who work as petty traders in Hồ Chí Minh City. By focusing on the social interaction between givers and recipients, it examines the traders’ class identity, their perception of social stratification, and their relationship with the state. Charitable work reveals the petty traders’ negotiations with the state and with other social groups to define their moral and social status in Vietnam’s society. These negotiations contribute to their self-identification as a moral social class and to their perception of trade as ethical labor.


2020 ◽  
Vol 8 (1) ◽  
pp. 37-46
Author(s):  
Stanislava Varadinova

The attention sustainability and its impact of social status in the class are current issues concerning the field of education are the reasons for delay in assimilating the learning material and early school dropout. Behind both of those problems stand psychological causes such as low attention sustainability, poor communication skills and lack of positive environment. The presented article aims to prove that sustainability of attention directly influences the social status of students in the class, and hence their overall development and the way they feel in the group. Making efforts to increase students’ attention sustainability could lead to an increase in the social status of the student and hence the creation of a favorable and positive environment for the overall development of the individual.


2015 ◽  
Vol 12 (2) ◽  
pp. 97
Author(s):  
Gun Faisal ◽  
Dimas Wihardyanto

The Talang Mamak tribe, one of Indonesian tribe, still practices the hunting and gathering of natural produce despite the fact that among them have chosen to settle permanently and doing farming activities. The aim of this research is to study the characteristics of the Talang Mamak house. The method used in this research is grounded theory method, based on the open coding, axial coding as well selective coding techniques. The method used to find the variation layout of the houses and then evaluate the characters and concept of the layouts. The conclusion of this study is that the core of the Talang Mamak house is based on the connectivity of four rooms namely: Ruang Haluan, Ruang Tangah, Ruang Tampuan and Pandapuran. The house has an open layout where all daily household activities are done without barriers. The social status of the owner is identified by houses furniture and staf


GIS Business ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. 202-206
Author(s):  
SAJITHA M

Food is one of the main requirements of human being. It is flattering for the preservation of wellbeing and nourishment of the body.  The food of a society exposes its custom, prosperity, status, habits as well as it help to develop a culture. Food is one of the most important social indicators of a society. History of food carries a dynamic character in the socio- economic, political, and cultural realm of a society. The food is one of the obligatory components in our daily life. It occupied an obvious atmosphere for the augmentation of healthy life and anticipation against the diseases.  The food also shows a significant character in establishing cultural distinctiveness, and it reflects who we are. Food also reflected as the symbol of individuality, generosity, social status and religious believes etc in a civilized society. Food is not a discriminating aspect. It is the part of a culture, habits, addiction, and identity of a civilization.Food plays a symbolic role in the social activities the world over. It’s a universal sign of hospitality.[1]


Patan Pragya ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 154-161
Author(s):  
Bed Prasad Neupane

This study is based on Kamalamai Municipality, Sindhuli District. There are 56 households of Dalit (Damai 29 and Kami 27) in this area. The census method was used in the study where, total population is 365 from 56 households. Among them, 172 were male and 193 were female. The general objectives of this study are to identify demographic and socio-economic status of Dalits and to find out causes of deprivation of Dalits people in the community. They worked as agricultural labour and service work. Their income is less than their expenditure. Most of them are uneducated but nowadays, the level of education has increased so that their children go to school and college. Only 39 percent were literate and only 7 percent Dalits have passed SLC and +2. They give priority on arrange marriage. Youth generation doesn't like the traditional occupation and skills. They use a lot of alcohol (Jaad and Raski) in the festivals and rituals ceremony however the economic condition of Dalit is poor so many children of them are forced to dropout from schools because their parents cannot afford their education fees. The social status of the females in the Dalit community is very low than the males in the society. After the father's death all the properties is transferred to the son. The main causes for degrading status of Dalits are due to poverty, lack of education and lack of social awareness. So far, there have not been any kinds of policies and plans to uplift the Dalit community in this area.


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