270 research outputs found

    Piggery: from environmental pollution to a climate change solution

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    Pig farms are a vital component of rural economies in Australia. However, disposal of effluent leads to many environmental problems. This case study of the Berrybank Farm piggery waste management system in Victoria estimates greenhouse gas (GHG) benefits from three different activities. Analysis reveals that the capturing and combusting of methane from piggery effluent could save between 4859 and 5840 tCO2e yr−1 ofGHGemissions. Similarly, using methane for replacing fuels for electricity generation could save another 800 tCO2e/yr of GHGs. Likewise, by utilizing the biogas wastes to replace inorganic fertilizers there could be a further saving of 1193 to 1375 tCO2e yr−1 of GHG, depending on the type of fertilizers the waste replaces. Therefore, a well-managed piggery farm with 15,000 pigs could save 6,852 to 8,015 tCO2e/yr, which equates to the carbon sequestrated from 6,800 to 8,000 spotted gum trees (age = 35 year) in their above plus below-ground biomass. Implementation of similar project in suitable areas in Australia could have significant environmental and financial benefits

    Community based forest management systems in developing countries and eligibility for clean development mechanism

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    Concerns have been raised among the scientific communities about the increased atmospheric concentration of carbon dioxide (CO2). Carbon sequestration rates can be maintained or increased by afforestation, reforestation, avoided deforestation, forest preservation and particular tending and cultural operations on existing forests. Of these, afforestation and reforestation are the only eligible project activities under the Clean Development Mechanism (CDM). Of the three market-based mechanisms of the Kyoto Protocol (KP), CDM is the only one designed for developing countries where, coincidently, community based forest management systems (CBFMS) are becoming the main form of forest management. Under these systems, enhanced natural regeneration, forest preservation and wise utilization through different sets of cultural and tending operations are widely practiced in Africa, Asia and Latin America. These systems are often more compatible with the essence of the Convention on Biological Diversity (CBD) than are alternative management systems. Using Nepal as a case study, this paper highlights the importance of community forests in developing countries and then explains why many of them may not be eligible for CDM project activities. After that, some reasons why enhanced natural regeneration and forest preservation activities should be considered under the CDM project activities will be discussed. If community forests contribute to achieving the main objectives of CDM program as well as providing biodiversity benefits, and if they are the only socially acceptable and economically viable option, then they should be eligible under the CDM project activities. In particular, the CDM forest definition (>10% crown cover) should not be a barrier to their eligibility

    Analysis of spacing for spotted gum plantations for maximising merchantable logs' volume in South East Queensland, Australia

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    Spotted gum (Corymbia citriodora subspecies Variegata) has the potential to be the major hardwood species for large-scale plantations in South East Queensland, Australia, but production research is limited due to the lack of age of research plots. Optimal spacing is a major subject of concern. Based on time series data from a spotted gum experiment site, growth performance is analysed for five spacing levels: ─11.3 m x 11.3 m (78 stems per hectare), 7.4 m x 7.4 m (182 sph), 5.4 m x 5.4 m (343 sph), 3.6 m x 3.6 m (771 sph) and 2.9 m x 2.9 m (1189 sph). The major objective was assumed to be to maximise total merchantable log volume. A growth model was produced, and the mean diameter at breast height (dbh) and total merchantable log volume for each spacing levels at a range of harvesting ages was estimated. From the analysis, the spacing level of 5.4 m x 5.4 m was found to be optimal for maximising merchantable log volume to 10 cm small-end diameter. Further analysis of mean dbh, height and volume of the largest 200 and 250 trees from this spacing level indicates that merchantable log volume could be maximised by retaining the 250 largest trees per hectare. The total financial revenue from the best spacing level in 25 and 30 years are predicted to be 13,637and13,637 and 17,779 per hectare, respectively. If full rotation data could be obtained, more reliable models could be produced, and a more accurate financial estimate could be made

    Do you think it is time to consider legume-based cropping systems again? [Editorial]

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    Agriculture is one of the major global sources of greenhouse gas (GHG) emissions; on-farm sources alone emit roughly 60% of all nitrous oxide and 50% of all methane emissions (WRI, 2012). Modern agriculture is more intensified, mechanised and modernised than ever before, and there are increasing demands for more fuel, electricity, farm machinery and agrochemicals. In addition, many associated off-farm operations require significant energy inputs, resulting in even more GHG emissions [1-12]. As a result, from 1990 to 2005, GHG emissions from agriculture increased by 14%, with average annual increase in emissions of 49 Mt CO2e/yr (US-EPA 2006). Significant reductions in farm inputs are needed to reduce farming costs and to curb increasing GHG emissions. Cropping systems that minimise farm input related costs and GHG emissions and also improve the sustainability of the soil system are the demand of this century

    Development of draft quality-of-governance standards for climate change mitigation and beyond: groundtruthing of developed verifiers in REDD+ pilot area, Nepal

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    Governance has been identified as central aspect of sustainable forest management. While all participants within the forest policy arena would agree with this observation, it has been less easy to determine how best to evaluate forest governance. Building on the work of the 1992 UN Statement of Forest Principles, and using a hierarchical framework of principles, criteria and indicators (PC&I), Dr Cadman has developed a consistent approach to evaluating forest governance at the global, regional, national and local levels. Tim and Tek applied their work to a range of global policy mechanisms, including REDD+, and has been used by the forest sector in developing countries (Nepal) to develop on-the-ground standards for evaluating REDD+ effectiveness and governance quality

    Representing whose access and allocation interests? Stakeholder perceptions and interests representation in climate governance

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    This chapter presents a synthesis of findings from quantitative and qualitative investigations of the perspectives of participants involved in international climate governance, conducted over the period 2010-2015. In this study, an established framework of principles, criteria and indicators (PC&I) for institutional governance was applied to two mechanisms under the United Nations Framework Convention on Climate Change (UNFCCC): the initiative referred to as ‘Reducing emissions from deforestation and forest degradation and the role of conservation, sustainable management of forests, and enhancement of forest stocks in developing countries’ (REDD+); and the Clean Development Mechanism (CDM) of the Kyoto Protocol (KP). Assessment focuses on the governance value of interest representation in terms of inclusiveness (access) and resources (allocation). It begins by outlining the historical context of UNFCCC, as well as CDM and REDD+, and continues with a delineation of the methods adopted, and results to reveal a relatively consistent set of results across the elements investigated, with inclusiveness receiving the highest score of all the governance indicators, and resources the lowest. The CDM was the weakest performer

    The role of fiscal instruments in encouraging the private sector and smallholders to reduce emissions from deforestation and forest degradation: Evidence from Indonesia

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    While developing countries around the world are preparing to implement REDD+, there is a debate on the possible role of fiscal instruments in encouraging the private sector and smallholder stakeholders in reducing emissions. Drawing on a case of Indonesia, an early leader on REDD+, this paper investigates the role of fiscal instruments in encouraging the private sector to reduce forest-based emissions and the implications for improving the forest sector governance. In particular the study highlights the perspectives of a range of forest sector stakeholders on the role of fiscal instruments that contribute either positively or negatively to reducing emissions from deforestation and forest degradation in Indonesia. The study comprised a review of the existing instruments in Indonesia, as well as surveys and interviews. An online survey and structured face-to-face interviews were conducted with a range of forest sector stakeholders, including government, civil society, academia, and palm oil concession holders. Findings indicate that there is a range of formal and informal fiscal instruments at the various jurisdictional levels, and a variety of incentives and disincentives. More emphasis on cross-sectoral co-ordination, alternatives to commodities such as palm oil, and continued land reform, is required

    ScientiïŹc Forest Management Practice in Nepal: Critical ReïŹ‚ections from Stakeholders’ Perspectives

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    Design and application of context-speciïŹc forest management practices with the participation of key stakeholders plays a signiïŹcant role in sustainable forest management outcomes. However, key forestry stakeholders often hold diïŹ€erent, and sometimes conïŹ‚icting, expectations in relation to forest management policies and management objectives. Applying the triple perspective typology of stakeholder theory, this paper assessed the evolution of 'ScientiïŹc Forest Management' (SciFM), a signature programme of the Nepalese Government, as well as its policy processes and explored compatibility, complexity, cost and relative advantages of the adoption of SciFM. The government believes that without this programme, Nepal is losing 91 Million US Dollar (USD) per year. This study revealed that participation of key stakeholders remained contested from the beginning of its implementation, primarily due to diïŹ€erences they held in understanding and interpretation of SciFM. Although stakeholders’ views converged on the potential role of SciFM to increase forest product supply and the domination of timber-centric management, their perspectives diïŹ€ered in nomenclature and implementation modality of SciFM. Primarily, the community forest users and their networks did not own the concept from the beginning, as they were suspicious of recentralization and bureaucratic dominance in forest governance through SciFM. Since historically ingrained skepticism in both government oïŹƒcials and community forest users’ networks towards each other has negatively inïŹ‚uenced the trust building environment,the management of stakeholders’ relations through frequent and meaningful deliberations, and the simpliïŹcation of bureaucratic procedures in implementation and capacity development of key actors could be instrumental in achieving SciFM objectives

    Climate change and indigenous people: perceptions of transhumant herders and implications to the transhumance system in the Himalayas

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    Climate change poses differential vulnerability for different communities, sectors and regions. People, whose subsistence livelihood is based on the direct utilisation of natural resources are most affected by climate change and have different but accurate perceptions of climate change than those people following modern lifestyles. The herders of the higher Himalayas follow vertical transhumance and combine it with subsistence agriculture for their livelihood. Although, climate models have predicted pronounced warming in high altitude areas of the Himalayas and there are many indications that climate change impacts different aspects of transhumance, there is no information on how transhumant herders have perceived change in climate and how these changes might impact transhumance system. One hundred and forty five transhumant herders were interviewed from three Village Development Committees (VDCs) namely Khumjung in Solukhumbu, Kalinchok in Dolakhaand Majhigaun in Bajhang; representing Eastern, Central and far-Western mountainous areas of Nepal respectively to explore their perceptions about climate change and other observed changes in biophysical indicators. About 80% of the herders perceived increasing summer temperature, 92% decreasing winter rainfall and more than 93% noticed decreasing snowfall. Majority of the herders agreed that there was fast melting of snow in the rangelands, rainfall events were becoming more and more unpredictable, drought events increased, there was early induce in greenery and maturity of grasses in the rangelands and appearance of new livestock diseases. These observations suggest that transhumant herders in the Himalayas have experienced change in climatic variables and have noticed change in bio-physical indicators that have implications to the transhumance system. The findings help to devise adaptation strategies for indigenous communities and incorporate them in the climate change policies in the Himalayas
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