Will forestry follow agriculture toward unsustainable soil depletion?

2007 ◽  
Vol 83 (3) ◽  
pp. 375-377 ◽  
Author(s):  
Peter Salonius
Keyword(s):  
Fossil Fuels ◽  
Forest Biomass ◽  
Soil Nutrient ◽  
Forest Harvesting ◽  
Natural Ecosystems ◽  
Stem Wood ◽  
Biomass Harvesting ◽  
Soil Nutrient Depletion ◽  
Soil Depletion ◽  
Intensively Managed

Human settlement has increased food production by progressively converting complex, self-managing natural ecosystems with tight nutrient cycles into simplified, intensively-managed agricultural ecosystems that are subject to nutrient leaching. Conventional stem wood forest harvesting is now poised to be replaced by intensive harvesting of biomass to substitute for increasingly scarce non renewable fossil fuels. Removal of nutrient-rich forest biomass (harvesting slash) can not be sustained in the long term. Key words: soil nutrient depletion, biomass harvesting, site productivity

Effects of forest plantation management on herbaceous-layer composition and diversity

2002 ◽  
Vol 80 (4) ◽  
pp. 378-389 ◽  
Author(s):  
Mark R Roberts
Keyword(s):  
Species Composition ◽  
Diversity Indices ◽  
Forest Harvesting ◽  
Herbaceous Layer ◽  
Age Classes ◽  
Forest Habitat ◽  
Total Species Richness ◽  
Plantation Age ◽  
Intensively Managed ◽  
Natural Stands

I compared the species composition and diversity of vascular plants in the herbaceous layer from a chronosequence of intensively managed spruce (Picea) plantations in three age-classes (5–7, 10–12, 14–16 years) with natural, mature stands (ca. 90 years) in southeastern New Brunswick, Canada. Total species richness (stand level) averaged 81–84 species in the three plantation age-classes compared with 64 species in the natural stands; richness of forest habitat species alone was 33–36 in the plantations and 37 in the natural stands. More fertile sites had significantly higher values for Hill's diversity indices (N0, N1, N2). Mean N0, N1, and N2 (subplot level) did not differ among stand types for all species, but N1 and N2 were significantly greater in the natural stands than in one or two plantation age-classes for forest habitat species alone. The two younger age-classes of plantations differed significantly in composition from the natural stands and the plantations became slightly more similar (Sørensen's index) to the natural stands with increasing age. One forest habitat species was lost and 24 others decreased in cover in the plantations. Tracking of plantations over a longer time period will be needed to determine whether these forest habitat species eventually regain their former abundance.Key words: chronosequence, forest harvesting, herbaceous layer, plantations, species diversity, species composition.

scholarly journals Eucalyptus sp. WOODCHIP POTENTIAL FOR INDUSTRIAL THERMAL ENERGY PRODUCTION1

2017 ◽  
Vol 41 (6) ◽  
Author(s):  
Marcos Antonio da Silva Miranda ◽  
Gabriel Browne de Deus Ribeiro ◽  
Sebastião Renato Valverde ◽  
Crismeire Isbaex
Keyword(s):  
Energy Source ◽  
Thermal Energy ◽  
Fossil Fuels ◽  
Forest Biomass ◽  
Dairy Industry ◽  
Industrial Sector ◽  
Cost Ratio ◽  
Planted Forests ◽  
Industrial Use ◽  
The Cost

ABSTRACT The main objective of this work was to identify and analyze the potential of forest biomass of Eucalyptus sp. such as thermal energy source for industrial use in place of fossil fuels. Two cases were analyzed: the first one estimated the total demand for forest biomass to replace the main fossil fuels in Brazilian industrial sector, with scenarios of 100, 75 and 50% replacement; in the second, it was calculated the cost of each fuel for producing ton of industrial steam (thermal energy) for a dairy industry, in order to verify the competitiveness of forest biomass compared to fossil fuels. The results showed that the areas demanded to replace 100, 75 and 50% of the analyzed fossil fuels were, respectively, 2.9, 2.2 and 1.5 million planted forests hectares, and the steam ton cost ratio using the woodchips was at least 34% lower than with other fuels, which corroborates the substitution potential in this sector.

scholarly journals Greenhouse heating by using an installation of biomass gasification

2019 ◽  
Vol 112 ◽  
pp. 03026
Author(s):  
Evelin Laza ◽  
Liliana Dumitrescu ◽  
Madalina Boboc ◽  
Georgiana Moiceanu
Keyword(s):  
Conversion Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Forest Biomass ◽  
Chemical Conversion ◽  
Biomass Gasification ◽  
Physical Processes ◽  
High Conversion Efficiency ◽  
Solid Liquid ◽  
Rapid Pyrolysis

The use of renewable energies has seen a significant increase in energy demand in agriculture, in competition with solid, liquid or gaseous fossil fuels. Wood and other forms of biomass including energy crops, agricultural and forest biomass are transformed into energy through thermal, biological or physical processes. Thermo-chemical conversion, biomass gasification, is the most attractive technology that offers a high conversion efficiency compared to direct burning or rapid pyrolysis.

What potential customers are telling us: Organizational buyer attitudes towards forest biomass

2011 ◽  
Vol 87 (1) ◽  
pp. 54-60
Author(s):  
John Nadeau ◽  
Kate Griese
Keyword(s):  
Fossil Fuels ◽  
Forest Biomass ◽  
Biomass Energy ◽  
Environmental Aspects ◽  
Heating Systems ◽  
Energy Needs ◽  
Forestry Sector ◽  
Level Of Importance ◽  
Potential Customers ◽  
Key Words Biomass

This paper reports on a study of organizational buyer attitudes towards forest biomass energy for use in heating systems.This topic warrants discussion as global energy needs grow and the Canadian forestry sector experiences economic challenges.In particular, heating systems are an appropriate introductory application for solid forest biomass because it representsan efficient and sustainable fuel use. The attitudes of organizational buyers are assessed and compared against theperceived level of importance for attitudinal items and the views held toward fossil fuels. The results demonstrate that forestbiomass is viewed favourably on environmental aspects and on some other attitudinal items of high importance. Managerialsuggestions are forwarded to guide the burgeoning sector in its attempt to build awareness and strengthen its perceivedimage among organizational buyers. Key words: biomass, biomass fuel, attitudes of organizational buyers, biomass as an alternative heat and energy source

Addressing biodiversity impacts of land use in life cycle assessment of forest biomass harvesting

2016 ◽  
Vol 5 (6) ◽  
pp. 670-683 ◽  
Author(s):  
Caroline Gaudreault ◽  
T. Bently Wigley ◽  
Manuele Margni ◽  
Jake Verschuyl ◽  
Kirsten Vice ◽  
...  
Keyword(s):  
Land Use ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Forest Biomass ◽  
Biomass Harvesting
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