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1.
Forest management for carbon sequestration is a low-cost, low-technology, relatively easy way to help mitigate global climate change that can be adopted now while additional long-term solutions are developed. Carbon-oriented management of forests also offers forest owners an opportunity to obtain a new source of income, and commonly has environmental co-benefits. The USA is developing climate change policy that recognizes forestry as a source of offsets in carbon markets, and the emissions trading programs and standards that have developed to date offer opportunities for afforestation, reforestation, reduced emissions from deforestation and forest degradation, and improved forest management projects. Private forest owners are key players in carbon markets because they own over half of the forest land in the USA and carbon offsetting from public forest land is rare. However, a number of environmental, economic, and social constraints currently limit carbon market participation by forest owners. Key issues include: the low price of carbon and high cost of market entry; whether small landowners can gain market access; how to meet requirements such as management plans and certification; and whether managing for carbon is consistent with other forest management goals. This paper provides an overview of current and emerging opportunities for family forest owners to contribute to climate change mitigation in the USA, and explores ways of overcoming some of the challenges so that they can take advantage of these opportunities.  相似文献   

2.
When included as part of a larger greenhouse gas (GHG) emissions reduction program, forest offsets may provide low-cost opportunities for GHG mitigation. One barrier to including forest offsets in climate policy is the risk of reversal, the intentional or unintentional release of carbon back to the atmosphere due to storms, fire, pests, land use decisions, and many other factors. To address this shortcoming, a variety of different strategies have emerged to minimize either the risk or the financial and environmental implications of reversal. These strategies range from management decisions made at the individual stand level to buffers and set-asides that function across entire trading programs. For such strategies to work, the actual risk and magnitude of potential reversals need to be clearly understood. In this paper we examine three factors that are likely to influence reversal risk: natural disturbances (such as storms, fire, and insect outbreaks), climate change, and landowner behavior. Although increases in atmospheric CO2 and to a lesser extent warming will likely bring benefits to some forest ecosystems, temperature stress may result in others. Furthermore, optimism based on experimental results of physiology and growth must be tempered with knowledge that future large-scale disturbances and extreme weather events are also likely to increase. At the individual project level, management strategies such as manipulation of forest structure, age, and composition can be used to influence carbon sequestration and reversal risk. Because some management strategies have the potential to maximize risk or carbon objectives at the expense of the other, policymakers should ensure that forest offset policies and programs do not provide the singular incentive to maximize carbon storage. Given the scale and magnitude of potential disturbance events in the future, however, management decisions at the individual project level may be insufficient to adequately address reversal risk; other, non-silvicultural strategies and policy mechanisms may be necessary. We conclude with a brief review of policy mechanisms that have been developed or proposed to help manage or mitigate reversal risk at both individual project and policy-wide scales.  相似文献   

3.

? Context

The Kyoto Protocol allows the use of domestic forest carbon sequestration to offset emissions to a limited degree, while bioenergy as an unlimited emission reduction option receives substantial financial support in many countries.

? Aim

The primary objective of this study was to analyze (1) whether these limits on forest carbon sequestration would be binding, thereby leading to inefficient mitigation, and (2) the total potential effect of the protocol on the greenhouse gas (GHG) fluxes in the forest sector.

? Methods

A partial equilibrium model of the Norwegian forest sector was used to quantify the GHG fluxes in a base scenario with no climate policy, a Kyoto Protocol policy (KP policy), and a policy with no cap on forest carbon sequestration (FC policy), assuming that the policies apply the rest of the century.

? Results

Carbon offsets are higher under the KP policy than in the base scenario and likewise higher than under the FC policy in the short run, but the KP policy fails to utilize the forest carbon sequestration potential in the long run as it provides considerably less incentives to invest in forestry than the FC policy.

? Conclusion

The KP increases the Norwegian forest sector’s climate change mitigation compared to no climate policy but less in the long run than a carbon policy with no cap on forest carbon credits.  相似文献   

4.
Emissions trading schemes (ETSs) have been a central component of international climate change poli-cies,as a carbon pricing tool to achieve emissions reduction targets.Forest carbon offset credits have been leveraged in many ETSs to efficiently meet emission reduction targets,yet there is little knowledge about the perceptions,expe-riences,and challenges associated with the forest carbon offsetting in existing and pilot ETS.Given that the future inclusion of forest carbon offset in ETS management activi-ties and policies will require strong support and acceptabil-ity among the institutions and experts involved in ETS,this study explores the experiences and lessons learned with 16 globally engaging experts representing major existing ETSs (North America,Europe,and New Zealand) and Chi-nese pilot ETSs towards the inclusion of forestry offsets,major concerns and challenges with existing implementation models.Findings revealed that many respondents particu-larly from North America,New Zealand,and Chinese pilot systems portrayed positive attitudes toward the inclusion of forestry carbon offsets and its role in contributing to a viable ETS,while European experts were not supportive.Respond-ents cited leakage,permanence,additionality,and monitor-ing design features as the major challenges and concerns that inhibit the expansion and inclusion of forest carbon offset-ring.Respondents from Chinese pilot schemes referenced a unique set of challenges related to implementation,including the increasing cost of afforestation and reforestation projects,the uncertainty in the future supply and demand for their national Certified Emissions Reduction (CER) scheme and landowner engagement.Existing and future ETSs should learn from and address the challenges experienced by global experts and carbon pricing mechanisms to design,evaluate,or enhance their forest carbon offset programs for an effec-tive and viable system that successfully contributes to GHG mitigation practices globally.We recommend inclusion of forest carbon offsets at the early stages of ETS improves the perceptions and experience of policy makers and practition-ers toward the success and potential of forestry offsets in ETS ensuring familiarity and confidence in the mechanism.  相似文献   

5.
Climate change is affecting the world’s ecosystems and threatening the economic system, livelihoods and availability of natural resources. Forest ecosystems can be carbon sources or sinks and are therefore integrated in international climate policy. Forest-related carbon mitigation projects are threatened by climate change through altered environmental conditions and forest processes, as well as through synergistic effects of climate change impacts with already existing socioeconomic and environmental stressors. Data on risk management and adaptation strategies were collected by a survey of 28 current forest projects targeting climate change mitigation. Ten of these represent the officially implemented afforestation (A) and reforestation (R) activities under the UNFCCC and the Kyoto protocol. Additionally, the official methodologies for AR activities under the CDM (Scope 14) were examined for potential climate change adaptation requirements. As a result, the adaptation of forest mitigation projects to climate change is found to be insufficient. A systematic approach for the inclusion of climate change risk management and adaptation is developed and guidelines for the design of “climate-change-proof” afforestation, reforestation and deforestation avoidance projects are proposed. A broader mainstreaming of the issue is required and clear policy regulations are necessary, especially for the post-Kyoto process.  相似文献   

6.
Wildland fire is a natural force that has shaped most vegetation types of the world. However, its inappropriate management during the last century has led to more frequent and catastrophic fires. Wildland fires are also recognized as one of the sources of CO2 and other greenhouse gases (GHG) that influence global climate change. As one of the techniques used to reduce the risk of destructive wildfires, prescribed burning has the potential of mitigating carbon emissions, and effectively contributes to the efforts proposed as part of the Clean Development Mechanism within the Kyoto protocol. In order to apply this concept to a real case, a simulation study was conducted in pine afforestation in the Andean region of Patagonia, Argentina, with the objective of evaluating the potential of prescribed burning for reducing GHG emissions. The scenario was established for a ten year period, in which simulated prescribed burning was compared to the traditional management scheme, which included the probability of annual average of wildfire occurrence based on available wildfire statistics. The two contrasting scenarios were: (1) managed afforestation, affected by the annual average rate of wildfires occurred in the same type of afforestation in the region, without prescribed burning, and (2) same as (1) but with the application of simulated prescribed burning. In order to estimate carbon stocks, and CO2 removals and emissions, we followed the guidelines given for GHG inventories on the Agriculture, Forestry and Other Land Uses (AFOLU) sector of the International Panel on Climate Change (IPCC), while the terminology used was the established by IPCC (2003). Data of afforested area, thinnings, and biomass growth were taken from previous surveys in the study area. Downed dead wood and litter (forest fuel load, FFL) was estimated adjusting equations fitted to those fuels, based on field data. Results show that comparing the two scenarios, prescribed burning reduced CO2 emissions by 44% compared to the situation without prescribed burning. The prescribed burning scenario represented about 12% of the total emissions (prescribed burning plus wildfires). Furthermore, avoided wildfires by simulated prescribed burning allowed an additional 78% GHG emissions mitigation due to extra biomass growth. Simulated prescribed burning in commercial afforestation of Patagonia appears to be an effective management practice not only to prevent wildfires, but also an efficient tool to mitigate GHG emissions. However, more studies in different scenarios would be needed to generalize these benefits to other ecosystems.  相似文献   

7.
The weight of much expert forest management opinion is that issues such as climate change can be effectively addressed only if forest policy-making moves from a purely sectoral focus and undergoes a shift to a more integrated multi-issue, multi-sector policy-making process. This is because credible adaptation policies in the sector require greatly enhanced multi-sectoral policy integration if they are to succeed. But this requirement may be beyond the capacity of many countries to deliver. This article explores the integration challenges faced by forest policy-making in Canada and the United States and uses the case of assisted tree migration to probe the reasons for the failure of institutions in both countries to develop and manage better vertical and horizontal integration in a climate change-related forest policy area. The article emphasizes the importance of previous rounds of policy-making or “policy legacies”, which serve to constrain contemporary policy options. It argues that due to the presence of many such legacies, forest policy development will continue to feature incremental adjustments through policy layering and policy drift, processes which limit the prospects for greater integration and better climate change adaptation in this sector.  相似文献   

8.
As a developing country with a large population and a fragile ecological environment, China is particularly vulnerable to the adverse effects of climate change. Beginning with the Rio Conference of 1992 China has played a progressively enhanced role in combating climate change. A series of policies and measures to address climate change have been taken in the overall context of national sustainable development strategy, making positive contributions to the mitigation and adaptation to climate change, among ...  相似文献   

9.
Forest carbon enhancement provides a low-cost opportunity in climate policy, but needs efficient policy design to be implemented. This paper reviews studies in economics on efficient design of policies for forest carbon sequestration and compares their findings against design systems in practice. Specific design problems are associated with the heterogeneity of landowners, uncertainty, additionality, and permanence in carbon projects. Different types of discounting of the value of the forest carbon sink compared with emissions abatement are suggested in the literature for management of most design problems, together with optimal contract design and emissions baselines for managing additionality and permanence in carbon sequestration. Design systems in practice, where forest carbon corresponds to 0.5% of all carbon volume subject to a pricing mechanism, mainly rely on additionality tests by approved standards on a project-by-project basis, and on buffer credits for management of permanence. Further development of forest carbon sinks as offsets in voluntary and compliance markets can be facilitated by applying tools for contract design and offset baseline management recommended in the literature.  相似文献   

10.
To implement effective climate change mitigation and carbon sequestration activities in the southern US, nonindustrial private forest landowner (NIPF) participation is necessary because of the significant area of forest land under their ownership. For policy implementation to involve this major ownership group in climate change mitigation activities in this region, it is important to understand their forest management motivations and understanding toward carbon sequestration. This study develops a regional typology of NIPF landowners based on reasons for owning forest land in the southern US. The specific goals were to: (1) segment NIPF landowners into smaller homogeneous groups based on reasons for owning forest land; (2) identify landownership characteristics and forest management behavior by ownership groups; and (3) assess their climate change beliefs and understanding of forest carbon sequestration by ownership groups. A principal component-cluster analysis of 735 responses to a mail questionnaire distributed to NIPF landowners in the southern US revealed three groups, which were named amenity, multi-objective, and timber-oriented landowners. The amenity group included 21% of the landowners, while the timber and multi-objective groups included 40% and 39% of the landowners, respectively. These landowner groups varied in terms of owner characteristics, forest species type and management behavior, climate change beliefs and understanding of carbon sequestration. The amenity and multi-objective owners tend to have more positive belief toward climate change than the timber group, but more landowners in each group indicated having poor understanding of forest carbon sequestration. The study fills a knowledge gap in research efforts by developing a regional typology of NIPF landowners and linking it with their forestry resources and management strategies along with their climate change beliefs and understanding of forest carbon sequestration.  相似文献   

11.
Sustainable forest management delivers ecological benefits critical to mitigating climate change impacts and can produce carbon offset credits tradable at the market price, generating additional income to forest landowners. However, due to high uncertainty in the climate policy of the United States, the economic potential of sustainably managing forests for offset credits is uncertain, discouraging landowners from participating in such practices. Also uncertain are the ecological consequences, especially in terms of forest carbon stocks. Here a conceptual framework was proposed which, with a regime-switching process, modeled the price of carbon credits as a proxy of the climate policy. Uncertainty in policy was translated into a limited number of scenarios regarding the timing and magnitude of policy regime switches. This model was then incorporated into a Markov decision process model of forest management, which accounted for multiple forms of risk and uncertainty affecting forest functioning and management. Using linear programming, this framework quantified the economic and ecological potentials of forest carbon management in various policy scenarios and determined optimal harvesting rules adaptive to policy shifts. A simple numerical example was provided to demonstrate the application of this framework.  相似文献   

12.
ABSTRACT

Forest management affects carbon sequestration (mitigation) and resilience of forest ecosystems (adaptation) under climate change. Therefore, the efforts to integrate these two approaches have been made by the political arrangements to seek the synergy effects and deal with trade-offs. To study the state of the art linkages and forest policies to realize both adaptation and mitigation, we systematically review the literature highlighting the topic (136 publications) and outline two different approaches from Germany and Japan as countries with substantial forest resources and high influences on international forest policies and wood trade. We identify three linkages: (1) an ecosystem (based) approach assuming that a resilient ecosystem (adaptation), has high potential as a carbon sink (mitigation), (2) a sustainable forest management (SFM) aiming for enhancing forests’ resilience and carbon sink potential simultaneously, and (3) a cross-sectoral approach generating synergies among multiple sectors of agriculture, forestry, urban design, and nature conservation. We find that a significant objective is still SFM for sustaining the forest area andwood production, where SFM examples in Germany and Japan exemplify contributions to carbon sinks and ongoing disaster risk management, respectively. Overall, the current differentiated objectives of SFM do not underpin the twofold approach and their synergy effects.  相似文献   

13.
Abstract

Stump extraction for forest health has been carried out operationally in British Columbia (BC) for many years. Emerging bioenergy opportunities plus the anticipated need for more fibre because of reductions in timber supply may increase interest in stump harvesting, but there are numerous environmental, economic and policy barriers that must be overcome first before industrial-scale stump harvesting can be seriously considered in BC. The potential for a future change in practice provides an opportunity to learn from the existing literature and identify knowledge gaps. In this article we review the available literature on stump harvesting from the European Union within the context of BC's forests, economy, biodiversity, environment and policies. We provide recommendations on how the government of BC could move forward if they decide to enable stump harvesting for fibre and bioenergy, including assessment of net economic and carbon benefits and environmental effects, improvements in inventory and the scientific knowledge base needed to support policy and guidance, and investigation of operational enhancements.  相似文献   

14.
Planting hedgerows on farm field edges can help mitigate greenhouse gas (GHG) emissions from agricultural landscapes by sequestering carbon (C) in woody biomass and in soil. Sequestration rates however, must be assessed in terms of their overall global warming potential (GWP) which must also consider GHG emissions. The objectives of this study were to (1) compare carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) emissions from two types of hedgerows and adjacent annual agricultural production fields, and 2) better understand how climate, soil properties and plant species configurations affect hedgerow GHG emissions. At eight study sites in the lower Fraser River delta of British Columbia, we measured emissions from soil in both planted (P-Hedgerow) and remnant hedgerows (R-Hedgerow), as well as in adjacent annual crop production fields over 1 year using a closed-static chamber method. CO2 emissions were 59 % higher in P-Hedgerow than R-Hedgerow, yet there were no significant differences of relative emissions of CH4 and N2O. The environmental variables that explained the variation in emissions differed for the three GHGs. CO2 emissions were significantly correlated with soil temperature. CH4 and N2O and emissions were marginally significantly correlated with soil organic carbon (SOC) and soil water-filled pore space (WFPS), respectively. Emissions were not significantly correlated with hedgerow plant species diversity. While hedgerows sequester carbon in their woody biomass, we demonstrated that it is critical to measure hedgerow emissions to accurately ascertain their overall GHG mitigation potential. Our results show that there are no CO2e emission differences between the management options that plant new diverse hedgerows or conserve existing hedgerows.  相似文献   

15.
Tropical forests are at the center of any global debate on climate change and sustainable forest management because of their twin roles in climate change adaptation and mitigation and for resilient development. However, in the countries of the Congo Basin forests receive very little attention in national planning and policies. Climate change is not currently considered in decisions and long-term forest management plans in these countries. This paper demonstrates that: (1) Congo Basin forests are needed for adaptation because they can help to decrease human vulnerability to climate change; and (2) Congo Basin forest management practices need to be adapted to accommodate climate change because these forests are vulnerable to climate change. A framework for facilitating adaptation in forestry is discussed and a review of adaptive actions presented. The paper recommends the adoption of sustainable forest management approach that includes a climate change focus. Such management should not only avoid any adverse effects on the forest resources and conservation of biodiversity, but also provides opportunities for greater, more sustainable rural development and poverty alleviation through income generation and employment opportunities.  相似文献   

16.
苏波 《世界林业研究》2023,36(1):117-122
随着对全球变暖和气候变化的担忧和关注在国际政策辩论中占据越来越重要的地位,全球对森林治理问题的兴趣和关注也在日益增长。森林已被定位为具有全球价值的碳库,对碳封存和缓解气候变暖具有重要作用。在这种背景下,拉丁美洲的森林治理在应对气候变化方面被视为具有全球重要性。文中以REDD为分析视角,从分阶段的方式出发,将拉美国家参与全球森林治理的模式分为以巴西为代表的自信模式、以哥伦比亚和哥斯达黎加为代表的包容模式和以玻利维亚为代表的抗拒模式3种;通过分析认为,拉美国家有最终实现减少森林砍伐和森林退化的巨大潜力以及利用其丰富的森林资源缓解气候变化的相应能力,但需要坚定森林治理和改革的决心并保证REDD政策实施的持续性。  相似文献   

17.
This article examines alternative forest harvesting regimes when ecosystem services in terms of water quality, biodiversity conservation and climate change mitigation are included in the analysis. The harvesting regimes are whole-tree harvesting with stump removal and conventional stem-only harvesting. The harvesting regimes are evaluated under two alternative climate policy contexts. The first alternative is a carbon neutral bioenergy policy, which assumes the carbon dioxide (CO2) neutrality of bioenergy and produces substitution benefits, as bioenergy replaces fossil fuels. The second alternative climate policy, a carbon non-neutral bioenergy policy, takes into account the fact that bioenergy causes carbon dioxide emissions, producing substitution costs, and that harvested woody biomass affects the ability of a forest to act as a carbon sink. We extend the traditional Faustmann (1849) rotation model to include nutrient load damage, biodiversity benefits, and climate impacts. The empirical analysis is based on Finnish data from a catchment experiment carried out on drained peatland forests. The empirical results show that under a carbon neutral bioenergy policy, whole-tree harvesting with stump removal produces the highest net social benefits. However, if a carbon non-neutral bioenergy policy is assumed, the net social benefits are greater under stem-only harvesting.  相似文献   

18.
Economists argue that if the cost of carbon emissions was bid into markets, consumers would effectively make purchases that would reduce emissions. Life-cycle inventory and assessment studies have identified how to make many environmental improvements such as reducing carbon emissions at every stage of processing. Most importantly, almost every change in building design, product selection alternative or forest management alternative results in changed levels of carbon emissions across many different stages of processing. These studies raise questions about the effectiveness of carbon registries, cap and trade systems or taxes to effectively monetize the reduction of carbon emissions. A three-tier credit system that accounts for carbon sequestration and storage in the forest sector including users of forest products can mimic many of the expected effects of an economy-wide carbon tax. Insight is provided on policies that are more likely to reflect the value of carbon emissions in purchasing and production systems and to avoid counterproductive results. The relationship between carbon emissions and other forest ecosystem services such as habitat is also examined.  相似文献   

19.
本文概述了林业碳汇的重要性以及国内外森林生态系统经营现状,分析了安徽省营林措施和存在的问题,并提出提高碳捕获、减少碳排放的相关措施和建议。  相似文献   

20.
森林经营在增强二氧化碳吸收方面具有重要作用,在全球气候变化背景下,本文阐述了《联 合国气候变化框架公约》中我国的履约目标,并评估了 2005 年和 2010 年广东省土地利用变化和林业领 域的固碳量。结果显示广东省 2005 年森林生物量生长碳吸收合计总量为 47.02×109 kg 二氧化碳当量,乔 木林固碳占总固碳量的 88.87%,采伐消耗温室气体排放 11.47×109 kg 二氧化碳当量,采伐消耗温室气 体排放二氧化碳当量占总排放量的 76.12%。2010 年固碳量增长 11.68%,采伐消耗温室气体排放增加了 19.85%。通过对比分析,探讨了广东省林业碳汇的提升潜力及方向。  相似文献   

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