Category Archives: Bioenergy from Wood

Gauging Nutritional Sustainability

The only way in which a comprehensive understanding of nutritional sustainability of a particular forest system can be gained, is by studying the majority of the more important nutrient fluxes in the system as brought about by specific management regimes or operations, (e. g. Ranger and Turpault 1999; du Toit and Scholes 2002; Laclau et al. 2005, 2010a; Dovey 2012). […]

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Woodland Utilization and Associated Impacts

More than 80 % of the rural population in sub-Saharan Africa is poor and traditionally relies on forests for their livelihoods (Schreckenberg et al. 2006); including slash and burn agriculture, charcoal and timber production. Fuel wood is one of the primary sources of energy for domestic use and processing (curing tobacco, drying fish, etc.) throughout the SADC region (Shackleton and […]

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Anaerobic Digestion for Biogas Production

Anaerobic digestion is a complex process involving various chemical reactions such as hydrolysis, acidogenesis and methanogenesis by means of several bacterial strains industrially applied for bio-gas production. This process can be applied to a wide range of biomass types, especially those with high moisture content. There is a growing interest in the application of this technology to transformation of lignocellulosic […]

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Life-Cycle Impact Assessment (LCIA)

The impact assessment phase (LCIA) follows the LCI and involves an assessment of all relevant environmental impacts associated with the input and emissions mapped in the LCI. The LCIA also covers other chemically related impacts like global warming and tropospheric ozone formation, as well as the physical impacts on the land and input-related impacts or the availability of resources (Birkved […]

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Case Study: Enumeration Data

Field data were collected during spring (October) 2006 in compartments of com­mercial plantations ranging in age from 4 to 9 years old. A total of 61 plots were sampled in 19 different stands. Plots were established no closer than 50 m to each other to ensure that the sample data set captured as much variability as possible in the chosen […]

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Institutional Frameworks and Policy Directions for Managing Extensively Managed Woodlands in Southern Africa

Management of forest resources and other natural resources in the miombo ecore­gion is governed by several acts and policies (Kayambazinthu et al. 2003). These regulatory systems provide access to forest resources through regulations, which involve the issuance of permits (Oduol et al. 2008). Reinforcement of conservation by-laws by traditional leaders has been known in some communities (Chirwa et al. 2008a; […]

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Managing Biomass Trade and Supply

The development of a good business process model for biomass supply is something that many enterprises see as a challenge. More specifically, the measurement of the biomass, the calculation of the heating value, and the varying lead times (from hours to years) are elements that many supply chains wrestle with. In the following section, some fundamental business process structures are […]

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