Download or read book Improving the Understanding of Temperate Forest Carbon Dynamics written by Theresa Marie Meacham and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Sequestration in Forest Ecosystems written by Klaus Lorenz and published by Springer Science & Business Media. This book was released on 2009-11-25 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Sequestration in Forest Ecosystems is a comprehensive book describing the basic processes of carbon dynamics in forest ecosystems, their contribution to carbon sequestration and implications for mitigating abrupt climate change. This book provides the information on processes, factors and causes influencing carbon sequestration in forest ecosystems. Drawing upon most up-to-date references, this book summarizes the current understanding of carbon sequestration processes in forest ecosystems while identifying knowledge gaps for future research, Thus, this book is a valuable knowledge source for students, scientists, forest managers and policy makers.

Download or read book Climate Management and Forest Type Influences on Carbon Dynamics of West Coast U S Forests written by Tara M. Hudiburg and published by . This book was released on 2008 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Net uptake of carbon from the atmosphere (net ecosystem production, NEP) is dependent on climate, disturbance history, management practices, forest age, and forest type. To improve understanding of the influence of these factors on forest carbon flux in the western U.S., a combination of federal inventory data and supplemental ground measurements was used to estimate several important components of NEP in forests in Oregon and Northern California during the 1990's. The specific components studied were live and dead biomass stores, net primary productivity (NPP), and mortality. In the semi-arid Northern Basin and mesic Coast Range, mean total biomass was 4 and 24 Kg C m−2, and mean NPP was 0.28 and 0.78 Kg C m−2 y−1, respectively. These values were obtained using species- and ecoregionspecific allometric equations and tended to be higher than those obtained from more generalized approaches. There is strong evidence that stand development patterns of biomass accumulation, net primary production, and mortality differ due to climate (ecoregion), management practices (ownership), and forest type. Among those three factors and across the whole region, maximum NPP and dead biomass stores were most influenced by climate, while maximum live biomass stores and mortality were mostly influenced by forest type. Live and dead biomass, NPP, and mortality were most influenced by forest type. Decrease in NPP with age was not general across ecoregions, with no marked decline in old stands (>200 years) in some ecoregions, and in others, the age at which NPP declined was very high (458 years in East Cascades, 325 in Klamath Mountains, 291 in Sierra Nevada). There is high potential for increasing total carbon storage by increasing rotation age and reducing harvest rates in this region. Only 1% of forest plots on private lands were >200 years old, whereas 41% of the plots were greater than 200 years old on public lands. Total carbon stocks could increase from 3.2 Pg C to 7.3 Pg C and NPP could increase from 0.109 Pg C y−1 to .168 Pg C y−1 (a 35% increase) if forests were managed for maximum carbon storage by increasing rotation age.

Download or read book Managing Forest Carbon in a Changing Climate written by Mark S. Ashton and published by Springer Science & Business Media. This book was released on 2012-01-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to provide an accessible overview for advanced students, resource professionals such as land managers, and policy makers to acquaint themselves with the established science, management practices and policies that facilitate sequestration and allow for the storage of carbon in forests. The book has value to the reader to better understand: a) carbon science and management of forests and wood products; b) the underlying social mechanisms of deforestation; and c) the policy options in order to formulate a cohesive strategy for implementing forest carbon projects and ultimately reducing emissions from forest land use.

Download or read book Recarbonization of the Biosphere written by Rattan Lal and published by Springer Science & Business Media. This book was released on 2012-03-28 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human activities are significantly modifying the natural global carbon (C) cycles, and concomitantly influence climate, ecosystems, and state and function of the Earth system. Ever increasing amounts of carbon dioxide (CO2) are added to the atmosphere by fossil fuel combustion but the biosphere is a potential C sink. Thus, a comprehensive understanding of C cycling in the biosphere is crucial for identifying and managing biospheric C sinks. Ecosystems with large C stocks which must be protected and sustainably managed are wetlands, peatlands, tropical rainforests, tropical savannas, grasslands, degraded/desertified lands, agricultural lands, and urban lands. However, land-based sinks require long-term management and a protection strategy because C stocks grow with a progressive improvement in ecosystem health.

Download or read book Forest Management for Timber Production and Climate Change Mitigation written by Seppo Kellomäki and published by Springer. This book was released on 2024-11-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the complex world of carbon dynamics within forest ecosystems, particularly in boreal zones, while also incorporating findings from selected temperate areas. It explores how these dynamics are influenced by management strategies and operations, providing a comprehensive understanding of how forests can be managed to enhance carbon uptake and thus, mitigate climate change. Divided into five parts, the volume begins by addressing the characteristics of global and boreal forests and their contribution to carbon storage. The following sections explore carbon dynamics in both natural and managed forests, including their impact on forest succession. The text also examines how management practices affect carbon dynamics, tree growth, and carbon stocks. Strategies to mitigate climate change through forest management, including the management of soil carbon and reforestation efforts are discussed. Finally, topics such as pre-commercial management, commercial thinning, and forest fertilization and their roles in managing boreal forest ecosystems for carbon sequestration and climate benefits are addressed. Aimed at professionals, researchers, and students in forestry, environmental science, and climate change studies, this book provides valuable insights into developing management strategies that enhance carbon uptake and accumulation in forest ecosystems. Readers will gain a comprehensive understanding of how forest management can contribute to climate change mitigation. It is an essential resource for anyone interested in sustainable forestry practices.

Download or read book Forest Carbon and Water Transport Dynamics from Physiological to Global Scales written by Jeffrey Mason Earles (II) and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests store over twice as much carbon as Earth's atmosphere and continue to be a significant sink, taking up 2.4 +/- 1.0 Pg C yr−1 or 63% of terrestrial net primary productivity. At the same time, vegetated ecosystems transpire 62,000 +/- 8,000 km3 yr−1 of water vapor into the atmosphere, or 56% of total precipitation globally. Hence, forest ecosystems are among the largest carbon and water transport systems on Earth. I studied particular dynamics of carbon and water transport in forests from physiological to global scales. First, I examined the timing of carbon emissions due to global forest clearance. For 169 countries examined, I found that thirty years after forest clearance between 38% and 100% of their carbon is released to the atmosphere. Specifically, tropical forest clearance tends to result in accelerated carbon emission rates compared to temperate forest clearance. Second, I investigated how wildfire and drought dynamics affect carbon stores of fire-suppressed forests. Owing to greater susceptibility to severe fire and drought, I found that wildfire suppression destabilizes forest carbon emissions and storage in California's mixed-conifer ecosystems. Finally, I described and measured bark water uptake as an eco-physiologically novel mechanism for drought recovery in Sequoia sempervirens (coastal redwood). I found that redwood branches absorb water through their bark, which is used to repair drought related vascular damage. Using historical weather data from typical redwood habitat, I demonstrated that a sufficient number of crown-wetting hours occurs annually to account for substantial hydraulic recovery. Collectively these studies improve our understanding of how forest clearance, drought and wildfire interactions, and hydraulic recovery affect carbon and water transport dynamics, which can assist in better forest management under changing climate conditions.

Download or read book Biodiversity Carbon Storage and Dynamics of Old Northern Forests written by Erik Framstad and published by Nordic Council of Ministers. This book was released on 2013 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmentally sound disposal of Ozone Depleting Substances is increasingly recognised as an important issue in terms of both the protection of the ozone layer and the effect on climate change. However, there is only a limited overview in the Nordic countries of product groups containing Ozone Depleting Substances, regulation of the substances, available treatment technologies, and waste infrastructure etc. This report provides an overview of the waste treatment and regulation of Ozone Depleting Substances in the Nordic countries. The report identifies gaps, proposes solutions and provides recommendations for relevant Nordic efforts within the area.

Download or read book The Role of Erosion in Soil Organic Matter and Pyrogenic Carbon Dynamics in Fire prone Temperate Forests written by and published by . This book was released on 2017 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildfire and erosion are major perturbations to the global carbon cycle in dynamic, fire-affected ecosystems around the world, including temperate forest ecosystems in the Sierra Nevada. As a byproduct of fires, pyrogenic carbon (PyC) is formed due to incomplete combustion of biomass. PyC constitutes an important component of the soil carbon pool and has been noted for its long residence time in soil and its susceptibility to erosion. As part of my dissertation research, I determined the rate of PyC, bulk soil carbon, and other soil constituents erosion after two wildfires: the Gondola Fire that occurred in South Lake Tahoe in 2002, and the Rim Fire that affected parts of Yosemite National Park in 2013. I found significant and preferential erosion of PyC, and vertical mobilization of PyC down into the soil profile after the fires. The preferential erosion of PyC, and overall quality of the soil and eroded sediments were controlled by burn severity, with PyC from higher burn severity sites being more preferentially eroded. To assess the fate of PyC post-fire in dynamic landscapes, I incubated chars formed at different temperatures in soils from eroding and depositional landform positions. Both charring temperature and landform position played significant roles in controlling soil respiration, with the lower temperature chars and the soil from the depositional landform position having much higher respiration than higher temperature chars and the soil from the eroding landform position. The difference in breakdown rates of PyC in soil from different landform positions demonstrates the importance of considering landform position as a control on PyC persistence in soil and that the interaction between charring temperature and landform position plays a significant role in the persistence of PyC. The post-fire erosional transport of PyC may act in a feedback to enhance or decrease overall PyC and bulk carbon stocks in soil. In a modeling exercise, I showed that explicit consideration for erosional loss (from eroding slope positions) and depositional gain (in lower-lying depositional landform positions) of PyC in soil can have its mean residence time in soil. I found that ignoring the role of erosional lateral distribution on PyC dynamics can introduce error in estimated turnover times of up to 150 years. Among the major accomplishments of my dissertation project include the realistic integration of biogeochemical and geomorphological approaches to derive improved representation of mechanisms that regulate soil carbon persistence in dynamic landscapes that routinely experience more than one perturbation. Findings from my dissertation research will have far reaching implications for improving our understanding of fate of terrestrial carbon after it enters streams and other aquatic systems. Furthermore, results of this project will play important role in establishing how the interaction of fire and erosion will play out under anticipated climate change scenarios, and the implications of these interactions on biogeochemical cycling of essential elements in a warmer world with intensified hydrologic cycle.

Download or read book Water and Carbon Dynamics Ecosystem Stability of Forest and Grassland in Response to Climate Change written by Xiaoming Kang and published by Frontiers Media SA. This book was released on 2024-04-15 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest and grassland ecosystems are the most important carbon sinks in terrestrial ecosystems. They can maintain or enhance carbon stocks and sinks in biomass, and play vital roles in mitigating climate change. China is taking action to achieve its carbon peak and carbon-neutral targets. Climate change, particularly the increase in the frequency, severity, and extent of drought, will affect the stability of the forest and grassland. How forests and grassland mitigate and adapt to climate change is still a challenge. Exploring the response of the forest and grassland to extreme climate events contributes to improving vegetation quality and enhancing the ability to respond to climate change.

Download or read book Exploring Coupled Land Atmosphere Carbon Dynamics and Seasonal Carbon Forecast Skill written by Eungee Lee and published by Nimble Books. This book was released on 2024-02-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The carbon dioxide concentration of the atmosphere is the primary driver of greenhouse warming, which indirectly affects every human being. This illustration, likely familiar to anyone with even a casual interest in climate, shows recent trends in carbon dioxide concentrations at the reference station at Mauna Loa Observatory in Hawaii. The seasonal oscillation in concentration is apparent. Just by eyeballing the data, it is obvious that understanding the terrestrial carbon cycle's contribution to CO2 concentrations is vital to understanding climate change. Readers should want to read this document because it provides valuable insights into the impacts of regional droughts on land and atmospheric carbon, highlighting the connection between climate change and carbon dynamics. It also presents the potential for seasonal carbon forecasting, which can support decision-making in areas such as fire management, forestry, and agriculture. Additionally, the document addresses the need for improved hydrometeorological prediction and decision-making tools in vulnerable regions like the Mekong River Basin, where water availability forecasts are crucial for comprehensive basin management and addressing the impacts of climate change. This document provides information about ongoing research activities related to the terrestrial carbon cycle and its interactions with the atmosphere. The research is conducted by the Global Modeling and Assimilation Office (GMAO) of NASA and focuses on various aspects of the carbon cycle, including coupled land-atmosphere carbon dynamics, seasonal carbon forecast skill, fire carbon dynamics, and improved hydrometeorological prediction with carbon cycle processes. The document also mentions specific research projects, such as investigating the impact of regional droughts on land and atmospheric carbon, evaluating the predictability of land carbon uptake through seasonal forecasts, and developing subseasonal-to-seasonal forecasting tools for informed decision-making in the Mekong River Basin. Overall, the research aims to improve our understanding of the terrestrial carbon cycle and its role in the Earth system. This annotated edition illustrates the capabilities of the AI Lab for Book-Lovers to add context and ease-of-use to manuscripts. It includes several types of abstracts, building from simplest to more complex: TLDR (one word), ELI5, TLDR (vanilla), Scientific Style, and Action Items; essays to increase viewpoint diversity, such as Grounds for Dissent, Red Team Critique, and MAGA Perspective; and Notable Passages and Nutshell Summaries for each page.

Download or read book A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management Structure Function and Climate Change and Implications for the Terrestrial Carbon Cycle written by Bailey A. Murphy (Ph.D.) and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests constitute a significant global carbon sink that continues to expand in size, in addition to supporting a range of environmental, economic, and social co-benefits. Forests interact with the overlying atmosphere through exchanges of carbon, water, and energy, and because of the climatic relevance of these fluxes, processes related to terrestrial ecology and land use have a considerable impact on global climate. The comparatively large size of the forest carbon sink in combination with the complimentary climate feedbacks it provides give it significant potential as an avenue for climate mitigation through management practices designed to enhance carbon sequestration. However, anthropogenic management and shifting environmental conditions due to climate change modify forest structure and function, which fundamentally alters land-atmosphere exchanges and the resultant feedbacks with climate. Gaps remain in our understanding of how forest management, structure, function, and climate change interact across long timescales, and whether relationships are spatially dependent, particularly with regards to vulnerabilities of forest function to climate change. These knowledge gaps manifest as substantial uncertainty surrounding the future of the terrestrial carbon sink and other ecosystem services, and the viability of improved forest management as a climate mitigation strategy hinges on addressing these uncertainties. Here, we sought to address three overarching questions: 1) What is the mechanistic relationship between forest structure and function? 2) What is the primary driver of future shifts in forest function? And 3) How does management impact the stability of forest function in the face of climate change? Observational data from the Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors 2019 (CHEESEHEAD19) field campaign was used to construct simplified models of the mechanistic relationships between forest structure and function and evaluate spatial dependence. We found that the mechanistic relationship between forest structure and function is mediated by resource use efficiency, is dependent upon the spatial resolution used to calculate structural complexity metrics, and that structural metrics representing the degree of vertical heterogeneity are the most influential productivity drivers for heterogeneous temperate forests. Next, a process-based model was employed to simulate multi-decadal projections of vegetation demographics in response to management, using data from National Ecological Observatory Network (NEON) core terrestrial sites in two U.S. regions. Additionally, downscaled global climate model (GCM) output under two future radiative forcing scenarios (RCP4.5 and RCP8.5) was used to drive model meteorology, allowing for the approximation of vegetation responses to shifting climatic conditions, and facilitating understanding of how management might moderate those responses. With this approach, we showed that management is the strongest driver of future variability in forest function at the regional scale, but that at broader spatial scales gradients in future climate become critical. The narrow precedence of climate over management as a driver of forest function at the sub-continental scale suggests that their effects are likely not independent of one another. We also found that temporal stability is driven primarily by climate, while resilience is shaped by management, but that the impact of management on forest functional stability is regionally dependent and varies by management intensity and severity. These findings allow us to improve representation in ecosystem models of how structural complexity impacts light and water-sensitive processes, and ultimately productivity. Improved models enhance our capacity to accurately simulate forest responses to management, furthering our ability to assess climate mitigation strategies. Additionally, these findings highlight the regional dependency of the response of forest function to management and climate change, and caution that the same management approach is not necessarily viable everywhere, meaning that the durability of management related Nature-based Climate Solutions have to be assessed at the regional scale. This information can help forest managers evaluate trade offs between ecosystem goods and services, assess climate risks of applying management practices in different regions, and potentially identify specific components of ecosystem function to bolster through targeted management practices.

Download or read book Managing Forest Carbon in a Changing Climate written by Mark S. Ashton and published by Springer Science & Business Media. This book was released on 2012-01-07 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to provide an accessible overview for advanced students, resource professionals such as land managers, and policy makers to acquaint themselves with the established science, management practices and policies that facilitate sequestration and allow for the storage of carbon in forests. The book has value to the reader to better understand: a) carbon science and management of forests and wood products; b) the underlying social mechanisms of deforestation; and c) the policy options in order to formulate a cohesive strategy for implementing forest carbon projects and ultimately reducing emissions from forest land use.

Download or read book Disturbance and Climate Change Risks to Forest Carbon Sinks and Potential Management Responses written by Caren Christine Dymond and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is a global crisis facing forest management. There are risks to many ecological goods and services from forests due to changes in productivity, mortality, pathogen, and wildfire dynamics. Likewise, there are opportunities such as increases in productivity or targeted funding for climate adaptation and emission reductions. To manage those risks and opportunities, we need the fundamental knowledge of forest carbon (C) cycles. Overall, my dissertation aims to improve our understanding of forest carbon dynamics and how they may respond to natural disturbances, climate change and management activities. This purpose falls within the context of the need to adapt to and mitigate climate change for the ongoing provision of ecological goods and services from forest ecosystems such as timber and biodiversity.The thesis starts with a critical analysis of six papers I have previously published. That chapter includes a synthesis of findings, critique of methods used, and identifies some areas for future research. Each subsequent chapter represents a contributing article.The overall findings of this dissertation are (i) that although forests are often GHG sinks, moderate or high intensity natural disturbances can reverse that flux. (ii) That climate change effects on productivity may increase or decrease the natural sinks or even create emission sources in forests that may otherwise have been sinks. (iii) That management strategies to increase species diversity and resilience may be effective at reducing risks of emissions, but they must be assessed for individual ecosystems and may be insufficient to fully offset disturbance or climate change effects.

Download or read book Belowground Carbon Fluxes and Changing Climatic Conditions written by Danielle M. Berardi and published by . This book was released on 2018 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests have an important role in the global carbon cycle, are a known regulator of climate, and are valued globally for the ecosystem services they provide to society. It is critical to improve our understanding about the exchange of carbon dioxide between forest ecosystems and Earth's atmosphere. Specifically, there is a need for improved mechanistic understanding of the component fluxes of soil respiration (Rs): autotrophic respiration (Ra; roots and associated mycorrhizae) and heterotrophic respiration (Rh; free-living soil microbes and soil fauna involved in decomposition). We examined the responses and relative contributions of these components to manipulated soil moisture. We found that heterotrophic respiration significantly responds to moisture additions regardless of season while autotrophic respiration did not. We also found that widely used and accepted methods for survey measurements (versus automated) were not sufficient to build relationships with abiotic factors for diurnal, monthly, and annual scaling, thus eliminating commonly used gap-filling procedures. Because survey measurements are often used to validate model results, it is critical that they be done over varying time periods (some diurnal) and be paired with automated measurements. When comparing our experimental data to modeled results, we found that DayCent, a daily time-step process-based biogeochemical model, underestimates annual heterotrophic respiration by several magnitudes compared to our temperate mixed conifer forest site. This is likely because DayCent, like most traditional ecosystem models, simulates decomposition through first order kinetics which inadequately represents microbial processes. Recent research has found that including microbial mechanisms explains 20 percent more spatial heterogeneity. We manipulated the DayCent heterotrophic respiration model to include a more mechanistic representation of microbial dynamics and compared the new model with our continuous and survey observations. By using a more representative and fully calibrated model of soil carbon dynamics, we are better able to predict feedbacks between climate and soil carbon pools to inform decisions and provide benefits to society through improvements to ecosystem modeling.

Download or read book The Potential of U S Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect written by John M Kimble and published by CRC Press. This book was released on 2019-12-02 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much attention has been given to above ground biomass and its potential as a carbon sink, but in a mature forest ecosystem 40 to 60 percent of the stored carbon is below ground. As increasing numbers of forests are managed in a wide diversity of climates and soils, the importance of forest soils as a potential carbon sink grows. The Potential of U.S. Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect provides researchers and policy makers with an understanding of soil processes and their relation to carbon dynamics, as well as strategies to monitor and techniques to measure forest soil carbon. It covers the effects of management on soils in a wide range of forest ecosystems together with policy options that are effective and benefit both the forest community and the over all environment. This valuable reference provides forest managers, urban planners, land owners, policy makers, and the general public with guidance that will allow for a holistic approach to land management, environmental quality, and improved forest productivity.

Download or read book Carbon Sequestration in Forests written by Ross W. Gorte and published by DIANE Publishing. This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: (1) Background: Congressional Interest in Carbon Sequestration; (2) Carbon Cycling in Forests: The Forest Cycle; Forest Types: Tropical Forests; Temperate Forests; Boreal Forests; (3) Measuring and Altering Forest Carbon Levels: Forest Carbon Accounting; Land Use Changes; Forestry Events and Management Activities: Vegetation and Soil Carbon; Forest Events ¿ Wildfires; Forestry Practices; Wood Energy; Leakage: Land Use Leakage; Product Demand Leakage; Federal Government Programs: Federal Forests; Federal Assistance for State and Private Forestry; Federal Tax Expenditures; Federal Programs Affecting Land Use; Accounting for Forest Carbon Sequestration; (4) Conclusions. Table.