scholarly journals Land Change Modelling to Inform Strategic Decisions on Forest Cover and CO2 Emissions in Eastern Madagascar

2018 ◽  
Vol 46 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Jennifer Hewson ◽  
Julie Hanta Razafimanahaka ◽  
Timothy Max Wright ◽  
Rina Mandimbiniaina ◽  
Mark Mulligan ◽  
...  

SummaryDecision-makers need readily accessible tools to understand the potential impacts of alternative policies on forest cover and greenhouse gas (GHG) emissions and to develop effective policies to meet national and international targets for biodiversity conservation, sustainable development and climate change mitigation. Land change modelling can support policy decisions by demonstrating potential impacts of policies on future deforestation and GHG emissions. We modelled land change to explore the potential impacts of expert-informed scenarios on deforestation and GHG emissions, specifically CO2 emissions, in the Ankeniheny–Zahamena Corridor in eastern Madagascar. We considered four scenarios: business as usual; effective conservation of protected areas; investment in infrastructure; and agricultural intensification. Our results highlight that effective forest conservation could deliver substantial emissions reductions, while infrastructure development will likely cause forest loss in new areas. Agricultural intensification could prevent additional forest loss if it reduced the need to clear more land while improving food security. Our study demonstrates how available land change modelling tools and scenario analyses can inform land-use policies, helping countries reconcile economic development with forest conservation and climate change mitigation commitments.

2016 ◽  
Vol 2 (3) ◽  
pp. e1500965 ◽  
Author(s):  
Andrés Viña ◽  
William J. McConnell ◽  
Hongbo Yang ◽  
Zhenci Xu ◽  
Jianguo Liu

Forest loss is one of the most pervasive land surface transformations on Earth, with drastic effects on global climate, ecosystems, and human well-being. As part of biodiversity conservation and climate change mitigation efforts, many countries, including China, have been implementing large-scale policies to conserve and restore forests. However, little is known about the effectiveness of these policies, and information on China’s forest dynamics at the national level has mainly relied on official statistics. In response to international calls for improved reliability and transparency of information on biodiversity conservation and climate change mitigation efforts, it is crucial to independently verify government statistics. Furthermore, if forest recovery is verified, it is essential to assess the degree to which this recovery is attributable to policy, within the context of other relevant factors. We assess the dynamics of forest cover in China between 2000 and 2010 and evaluate the effectiveness of one of the largest forest conservation programs in the world—the Natural Forest Conservation Program (NFCP). Results indicate that forest cover has significantly increased in around 1.6% of China’s territory and that the areas exhibiting forest gain experienced a combined increase in net primary productivity (ca. 0.9 Tg of carbon). Among the variables evaluated at county level, the NFCP exhibited a significantly positive relation with forest gain, whereas reduction in rural labor showed a negative relationship with both forest loss and gain. Findings such as these have global implications for forest conservation and climate change mitigation efforts.


2018 ◽  
Vol 10 (8) ◽  
pp. 2715 ◽  
Author(s):  
Alejandro Padilla-Rivera ◽  
Ben Amor ◽  
Pierre Blanchet

The design and study of low carbon buildings is a major concern in a modern economy due to high carbon emissions produced by buildings and its effects on climate change. Studies have investigated (CFP) Carbon Footprint of buildings, but there remains a need for a strong analysis that measure and quantify the overall degree of GHG emissions reductions and its relationship with the effect on climate change mitigation. This study evaluates the potential of reducing greenhouse gas (GHG) emissions from the building sector by evaluating the (CFP) of four hotpots approaches defined in line with commonly carbon reduction strategies, also known as mitigation strategies. CFP framework is applied to compare the (CC) climate change impact of mitigation strategies. A multi-story timber residential construction in Quebec City (Canada) was chosen as a baseline scenario. This building has been designed with the idea of being a reference of sustainable development application in the building sector. In this scenario, the production of materials and construction (assembly, waste management and transportation) were evaluated. A CFP that covers eight actions divided in four low carbon strategies, including: low carbon materials, material minimization, reuse and recycle materials and adoption of local sources and use of biofuels were evaluated. The results of this study shows that the used of prefabricated technique in buildings is an alternative to reduce the CFP of buildings in the context of Quebec. The CC decreases per m2 floor area in baseline scenario is up to 25% than current buildings. If the benefits of low carbon strategies are included, the timber structures can generate 38% lower CC than the original baseline scenario. The investigation recommends that CO2eq emissions reduction in the design and implementation of residential constructions as climate change mitigation is perfectly feasible by following different working strategies. It is concluded that if the four strategies were implemented in current buildings they would have environmental benefits by reducing its CFP. The reuse wood wastes into production of particleboard has the greatest environmental benefit due to temporary carbon storage.


2012 ◽  
Vol 1 (1) ◽  
pp. 7-37
Author(s):  
Bruno Zeller ◽  
Michael Longo

In a fragmented global environment, the efforts of state and non-state actors are important in assessing the state of play on climate change mitigation actions around the world. This article will consider from a comparative perspective the various legislative models for addressing climate change and the reduction of GHG emissions with particular focus on the EU, USA, Australia and Switzerland. As legal developments are not limited to legislative schemes, this article will examine the voluntary carbon offset market and other trade related solutions to GHG emissions which have emerged in the absence of mandatory limitation systems. Also warranting attention are the actions of private parties in common law jurisdictions to bring legal proceedings against power companies for damage caused by climate change. Together, these developments demonstrate that climate change abatement is not the sole remit of the legislature.


2021 ◽  
Vol 97 (02) ◽  
pp. 179-190
Author(s):  
Georgina K. Magnus ◽  
Elizabeth Celanowicz ◽  
Mihai Voicu ◽  
Mark Hafer ◽  
Juha M. Metsaranta ◽  
...  

The United Nations Framework Convention on Climate Change (UNFCCC) requires its signatories, including Canada, to estimate and report their annual greenhouse gas (GHG) emissions and removals. Forests are an important natural resource as they slow the accumulation of atmospheric carbon through the process of carbon sequestration. Due to the role of forests as carbon sinks, governments consider afforestation projects as feasible climate change mitigation strategies. This article outlines a spatially-explicit approach to validating afforestation data in Ontario, Canada. Validation is a user-supervised process that uses satellite imagery, remote sensing tools, and other auxiliary data to confirm the presence of seedlings planted through Forests Ontario’s 50 Million Tree program. Of the 12 466 hectares assessed, 83% is identified as afforested, 6% is not afforested and 10% is not determined. The area classified as successful afforestation is used as input for the Generic Carbon Budget Model (GCBM), to simulate afforestation effects on carbon stocks. Our findings show the afforestation activities will create a small carbon sink by 2060. From this project, it is evident that spatial validation of afforestation data is feasible, although the collection of additional standardized auxiliary data is recommended for future afforestation projects, if carbon benefits are to be reported.


2019 ◽  
pp. 165-180
Author(s):  
Sara Hughes

This concluding chapter highlights the book's major findings and explores the remaining challenges and tradeoffs inherent in today's locally led climate change agenda. While the cities have made demonstrable progress on reducing greenhouse gas (GHG) emissions, they are now facing the challenge of scaling up their efforts as new targets for 2030 loom. The chapter then discusses ways the cities can and are using the governing strategies to do this: by building participatory decision-making institutions, building capacity for climate “smart” governance, and expanding and stabilizing the coalition for climate change mitigation. However, the need for a “big tent” approach to climate change mitigation to make the citywide changes necessary for reducing GHG emissions 80 percent increases the complexity of interests and challenges of coordination. The scope of a viable urban climate change coalition may ultimately set the limits of a locally led mitigation agenda.


2019 ◽  
pp. 116-147
Author(s):  
Sara Hughes

This chapter assesses how New York City, Los Angeles, and Toronto have used the three governing strategies—institution building, coalition building, and capacity building—to support their efforts to reduce greenhouse gas (GHG) emissions. Each strategy reduces key sources of uncertainty that arise when taking up the new and challenging issue of climate change mitigation. The governing strategies facilitate action on climate change and channel resources to the effort. In this way, the strategies underpin and support governance for climate change mitigation regardless of the particular mode of governing or source of emissions being targeted. These strategies have manifested in different ways: while New York City and Toronto have focused on building stakeholder coalitions invested in and informing city government programs, Los Angeles has focused more on mobilizing voters willing to support ballot initiatives.


Climate ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 90 ◽  
Author(s):  
Elena Sesana ◽  
Chiara Bertolin ◽  
Alexandre Gagnon ◽  
John Hughes

Climate change mitigation targets have put pressure to reduce the carbon footprint of cultural heritage buildings. Commonly adopted measures to decrease the greenhouse gas (GHG) emissions of historical buildings are targeted at improving their energy efficiency through insulating the building envelope, and upgrading their heating, cooling and lighting systems. However, there are complex issues that arise when mitigating climate change in the cultural built heritage sector. For instance, preserving the authenticity of heritage buildings, maintaining their traditional passive behaviours, and choosing adaptive solutions compatible with the characteristics of heritage materials to avoid an acceleration of decay processes. It is thus important to understand what the enablers, or the barriers, are to reduce the carbon footprint of cultural heritage buildings to meet climate change mitigation targets. This paper investigates how climate change mitigation is considered in the management and preservation of the built heritage through semi-structured interviews with cultural heritage experts from the UK, Italy and Norway. Best-practice approaches for the refurbishment of historical buildings with the aim of decreasing their energy consumption are presented, as perceived by the interviewees, as well as the identification of the enablers and barriers in mitigating climate change in the cultural built heritage sector. The findings emphasise that adapting the cultural built heritage to reduce GHG emissions is challenging, but possible if strong and concerted action involving research and government can be undertaken to overcome the barriers identified in this paper.


2019 ◽  
Vol 116 (23) ◽  
pp. 11187-11194 ◽  
Author(s):  
Arne Kätelhön ◽  
Raoul Meys ◽  
Sarah Deutz ◽  
Sangwon Suh ◽  
André Bardow

Chemical production is set to become the single largest driver of global oil consumption by 2030. To reduce oil consumption and resulting greenhouse gas (GHG) emissions, carbon dioxide can be captured from stacks or air and utilized as alternative carbon source for chemicals. Here, we show that carbon capture and utilization (CCU) has the technical potential to decouple chemical production from fossil resources, reducing annual GHG emissions by up to 3.5 Gt CO2-eq in 2030. Exploiting this potential, however, requires more than 18.1 PWh of low-carbon electricity, corresponding to 55% of the projected global electricity production in 2030. Most large-scale CCU technologies are found to be less efficient in reducing GHG emissions per unit low-carbon electricity when benchmarked to power-to-X efficiencies reported for other large-scale applications including electro-mobility (e-mobility) and heat pumps. Once and where these other demands are satisfied, CCU in the chemical industry could efficiently contribute to climate change mitigation.


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