4,469 research outputs found
Surviving global warming: why eliminating greenhouse gases isn't enough/ Roger A. Sedjo.
No full textIncludes bibliographical references and index.This provocative and important overview of the challenges of and possible approaches to climate change by an expert and shared recipient of a Nobel Peace Prize is essential reading for policy makers, climate scientists, and lay persons alike. Though the Paris Agreement on climate change was a significant achievement, most authorities agree that its measures to reduce greenhouse-gas emissions will be insufficient to offset the forecasted increase in global warming. Even in the unlikely case of ideal compliance, the Earth will still experience major climate-driven damages. Given this reality, climate expert Roger A. Sedjo argues in this book that a Plan B is required. He makes a compelling case that doing more of the same, by focusing only on the mitigation plan of the Paris Agreement, will leave humanity increasingly vulnerable; instead, we must also begin planning adaptation strategies-Plan B-which enable societies to anticipate and protect against the worst effects of inevitable climate change. The author examines several areas where environmental damage could be severe. Sea-level rise is a major concern and measures could be, and in some cases are now being, undertaken to protect coastal areas. The author also addresses the need for more robust action to ward off the likely decline in agricultural productivity, destruction of forests and biodiversity, and the impact of natural catastrophes like hurricanes made worse by climate change. In addition, he considers geo-engineering strategies, such as atmospheric reflectivity, which may play a role in lessening the impact of global warming.Introduction. Climate change : where are we now? -- Al Gore and the greenhouse gas theory : Plan A -- Natural climate change : GHGs are not the whole answer -- Plan A, mitigation : a bridge too far? -- Plan B, the adaptation solution -- Adaptation through reflectivity and geoengineering -- The politics of adaptation vs. mitigation -- "Plan B" as insurance -- Where from here? : next steps as well as summary and conclusions.1 online resourc
The Forest Sector: Important Innovations
No full textUnlike other resources such as petroleum, coal, and copper, forests are renewable. Yet, in many respects forests historically have been treated as a nonrenewable resource in that forest stocks were depleted or "mined" and loggers moved on to exploit other "deposits." The lands were often put to other uses, typically agricultural, or allowed to regenerate naturally. This paper looks at technical change in forest extraction, i.e., logging under a number of different conditions. It finds that, on average, labor productivity has been increasing in recent decades. However, total factor productivity in the US has declined in recent years. In addition, the study examines the tree-growing potential of plantation forestry. It finds that there is underway a substantial shift away from the harvesting of old-growth forests and toward intensive forest plantations. Plantations allow for high productivity in tree growing and are being used to offset decreased wood availability due to the inaccessibility and high costs of many old- and second-growth forests. The decreased accessibility reflects not only the impacts of past logging but, perhaps more importantly, the increase in forests in protected area set-asides. Additionally, natural forests face increasingly stringent regulations on logging and forest management activities. High-yield intensively managed forests, on well located, high productivity sites, offer the potential of obtaining high yields while using relatively small land areas by allowing the near full output potential of practices including species selection, fertilization and pest control. Finally, tree planting creates the opportunity to apply genetic improvements to the tree stock thereby further increasing growth productivity and allowing for control of tree characteristics.
Macroeconomics and Forest Sustainability in the Developing World
No full textGovernments often use fiscal, exchange rate, monetary policy as well as export promotion tax increases, privatization, and land reform as part of comprehensive adjustments packages for addressing economic imbalances, balance of payments, and structural weaknesses. Such approaches, however, have come under heavy criticism for failing to recognize the social and environmental costs associated with them. Critics have argued that economic growth, trade liberalization, and increased primary product exports increase pressure on many sectors, including the agricultural and forestry land use sectors. This paper examines a number of these types of external shocks. This paper makes two arguments. First, from a theoretical economic perspective, although in many cases structural adjustment programs can be expected to affect the domestic forest sector, in other cases they will not. Second, even when there is an impact on the forest, it need not be detrimental to environmental and ecosystem values. A sustainable forest system needs to provide wood, local environmental products and services, and global ecological services, but individual forests can specialize in some of these.forests, sustainability, macroeconomics, trade, exchange rates, structural adjustment
long-term adequacy of world timber supply
No full textRoger A. Sedjo, Kenneth S. Lyon.xv, 230 p. : ill. ; 24 cm
Comment on Nordhaus: Tax Carbon, Not Fossil Fuels
No full textWilliam Nordhaus's proposal to tax fossil fuel at the source could be improved by taxing carbon emissions instead and thereby providing incentives for carbon capture and storage technology, according to Roger Sedjo.
Timber Supply Model 96: A Global Timber Supply Model with a Pulpwood Component
No full textThis study involves an update of our earlier Timber Supply Model, which was fully developed in our book, The Adequacy Of Global Timber Supply by Sedjo and Lyon (1990), published by Resources for the Future. The new version, called Timber Supply Model 1996 (TSM96), uses an economic market supply/demand approach to project an intertemporal time path of the world's price and output level of industrial wood. As did the original TSM, the TSM96 provides projections of the time path of the equilibrium output levels of the several regions into which the world has been subdivided. A major new feature of TSM96 is that industrial wood, treated as homogeneous in the earlier study, has be subdivided into two different wood types — pulpwood and solidwood. The supply of these two commodities is not independent. Rather they can be viewed as joint products in production. The study develops a base-case projection, which gives the authors' best judgment of the timber situation likely to develop over the next few decades. Over that period total industrial wood production increases from about 1.7 billion cubic meters to 2.3 billion cubic meters, an increase of about 35 percent, while global pulpwood production increases from about 700 million cubic meters in 1995 to about 1.325 billion in 2045. Pulpwood price shows a fairly substantial increase throughout the first one-third of the period, a more modest increase over the second third, and a slight decline during the last third. Solidwood prices are almost the inverse of pulpwood, declining over the first third of the decade, increasing slightly over the next third and increasing in the last third of the decade. Over the whole of the 50-year period overall price increases are 30 percent for pulpwood and only about 8 percent for solidwood.
Forest Carbon Sinks: European Union, Japanese, and Canadian Approaches
No full textThis report compares the approaches of the governments of Japan, Canada, and the European Union member countries toward using carbon sinks to meet their respective Kyoto Protocol carbon reduction targets. Various policies have been proposed by which governments can sequester carbon by promoting afforestation and reforestation, slowing deforestation, and undertaking forest management activities under Articles 3.3 and 3.4. At this time, carbon emissions reduction programs are still under development, both within individual countries and within the context of the protocol. Although some of the details have been worked out, concrete definitions are often still lacking, especially as regards impermanence of forests, additionality, leakage, and socioeconomic and environmental impacts. Japan appears most likely to rely most heavily on forest and biological sinks to meet its Kyoto targets. For Canada, sinks are likely to play a rather modest role. For the EU, the role of sinks is likely to be even smaller, with sinks playing no role for some EU countries (including Sweden, our case study country). However, the final decisions have not yet been made for any of these countries, and the actual role of sinks remains to be determined.Climate, Sinks, Kyoto Protocol, Forestry. Canada, Japan, European Union
A GLOBAL MODEL OF CLIMATE CHANGE IMPACTS ON TIMBER MARKETS
No full textSeveral papers have now estimated the impact of climate change on national timber markets, but few studies have measured impacts globally. Further, the literature on impacts has focused heavily on changes in productivity and has not integrated movements of biomes as well. Here, a dynamic model of ecological change and economic change is developed to capture the impact of climate change on world timber markets. Climate change is predicted to increase global timber production as producers in low-mid latitude forests react quickly with more productive short-rotation plantations, driving down timber prices. Producers in mid-high latitude forests, in contrast, are likely to be hurt by the lower prices, dieback, and slower productivity increases because of long-rotation species. Consumers in all regions benefit from the lower prices, and the overall impacts of climate change in timber markets are expected to be beneficial, increasing welfare in those markets from 2% to 8%.Resource /Energy Economics and Policy,
Forest Carbon Sequestration: Some Issues for Forest Investments
No full textA major problem being faced by human society is that the global temperature is believed to be rising due to human activity that releases carbon dioxide to the atmosphere, i.e., global warming. The major culprit is thought to be fossil fuel burning, which is releasing increasing amounts of carbon dioxide in the atmosphere. The problem of increasing atmospheric carbon dioxide can be addressed a number of ways. One of these is forestry and forest management. This paper examines a number of current issues related to mitigating the global warming problem through forestry. First, the overall carbon cycle is described, and the potential impact of forests on the buildup of atmospheric carbon is examined. A major focus is the means by which forests and forest management can contribute to the sequestration of carbon. The potential role of forests and forestry in sequestrating carbon to reduce the buildup of greenhouse gases in the atmosphere is now well recognized. A number of alternative approaches to utilizing forestry and forest management for carbon sequestration are examined. These include forest protection; the management of forests for carbon for joint products, i.e., the management of forests to generate both carbon and timber as products; the establishment of plantation forests dedicated to carbon sequestration; and increased production of wood products. Replacing other materials with wood will sequester carbon while reducing energy requirements, thereby reducing carbon emissions. Studies examining the costs of carbon sequestration using forestry are also discussed. The recent Kyoto Protocol (K.P.) explicitly recognizes certain forestry activities as “certifiable” for sequestration credits. But some definitions and aspects of carbon sequestration through forestry were left incomplete or inadequately defined by the Protocol. Furthermore, the KP has changed due to the recent withdrawal of the US for the Protocol (although not from the Kyoto Process). Nevertheless, further clarification is necessary to understand the full potential and set of opportunities from forestry both within the framework of the Protocol and more generally. Alternative types of vehicles for sequestration credits are discussed below,m both within and outside the context of the KP , and their advantages and disadvantages in terms of periods covered and liability are also examined. Finally, some ongoing real-world activities utilizing forestry specifically to sequester carbon are discussed.forests, carbon, sinks, sequestration, forest management, Kyoto Protocol
Roger Abrahams, author
No full textRoger Abrahams, director of the African and Afro-American Research Institute at the University of Texas-Austin and author of Positively Black, argues the case for ethnic diversity in this interview. He also discusses that the idea of "new ethnicity" is not restricted to black or brown America and he sees a widespread return to old mores inherent in the traditional ethnic value system. Interviewed by WTMJ-TV host Jim Peck.GrayscaleSoun
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