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The Global Status Of Peatlands And Their Role In Carbon Cycling
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Book Synopsis The Global Status of Peatlands and Their Role in Carbon Cycling by : C. P. Immirzi
Download or read book The Global Status of Peatlands and Their Role in Carbon Cycling written by C. P. Immirzi and published by . This book was released on 1992 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Cycling in Northern Peatlands by : Andrew J. Baird
Download or read book Carbon Cycling in Northern Peatlands written by Andrew J. Baird and published by John Wiley & Sons. This book was released on 2013-05-03 with total page 779 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 184. Carbon Cycling in Northern Peatlands examines the role that northern peatlands play in regulating the atmospheric carbon budget. It summarizes current research in four interconnected areas: large-scale peatland dynamics and carbon cycling; plant and microbial dynamics and their effect on carbon fluxes to the atmosphere; methane accumulation in, and loss from, peatlands; and water and dissolved carbon fluxes through peatlands. The volume highlights include A thorough assessment of the challenges involved in incorporating carbon cycling in northern peatlands into global climate models; A conceptual model to examine the partitioning of terminal carbon mineralization into production of CO2 and CH4; A comprehensive review of the evidence for the accumulation of methane in deep and shallow peat; and A description of the hydrologic changes induced by peat harvesting and associated challenges in restoring altered peatlands to their natural hydrologic regime. Carbon Cycling in Northern Peatlands will be of interest to research scientists and graduate and undergraduate students, particularly those who wish to know more about the role of peatlands in the global carbon cycle and their role as modifiers of climate.
Book Synopsis The Global Carbon Cycle by : David Archer
Download or read book The Global Carbon Cycle written by David Archer and published by Princeton University Press. This book was released on 2010-11-01 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: A must-have introduction to this fundamental driver of the climate system The Global Carbon Cycle is a short introduction to this essential geochemical driver of the Earth's climate system, written by one of the world's leading climate-science experts. In this one-of-a-kind primer, David Archer engages readers in clear and simple terms about the many ways the global carbon cycle is woven into our climate system. He begins with a concise overview of the subject, and then looks at the carbon cycle on three different time scales, describing how the cycle interacts with climate in very distinct ways in each. On million-year time scales, feedbacks in the carbon cycle stabilize Earth's climate and oxygen concentrations. Archer explains how on hundred-thousand-year glacial/interglacial time scales, the carbon cycle in the ocean amplifies climate change, and how, on the human time scale of decades, the carbon cycle has been dampening climate change by absorbing fossil-fuel carbon dioxide into the oceans and land biosphere. A central question of the book is whether the carbon cycle could once again act to amplify climate change in centuries to come, for example through melting permafrost peatlands and methane hydrates. The Global Carbon Cycle features a glossary of terms, suggestions for further reading, and explanations of equations, as well as a forward-looking discussion of open questions about the global carbon cycle.
Book Synopsis CARBON CYCLING AND RESTORATION IN TEMPERATE FORESTED PEATLANDS by :
Download or read book CARBON CYCLING AND RESTORATION IN TEMPERATE FORESTED PEATLANDS written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Forested peatlands are important natural ecosystems in the global carbon cycle due to their large carbon pools in both standing biomass and thick organic soils. Northern white cedar (cedar; Thuja occidentalis L.) peatlands are a common and ecologically important forested peatland type in the Great Lakes Region of North America. Despite the great potential of cedar peatlands to store carbon, very few studies have characterized the fluxes or cycling of carbon in these ecosystems. Furthermore, the last 100-150 years have seen a dramatic shift in the age distribution of cedar stands, due primarily to harvesting for forest products and overbrowsing by large deer herds in the region. The aims of this thesis are to 1) evaluate the feasibility of enrichment planting as a restoration option in cedar peatlands, and 2) characterize the production of dissolved organic carbon (DOC) and the soil emissions of carbon dioxide (CO2) and methane (CH4) in a cedar peatland. Five restoration sites across northern Minnesota were used in investigating the conditions that fostered optimum height growth and survival of planted cedar seedlings. Planted cedar were found to grow and survive best when planted on hummocks. Additionally, a combination of protection from browse and high light maximized height growth of planted cedar. One site in the Upper Peninsula of Michigan was used for measurements of soil emissions of CO2 and CH4 and concentrations and characterizations of DOC. Soil CO2 emissions were correlated with water table level but CH4 emissions were not, possibly due to sufficiently high water tables throughout the measurement season. The quantity and quality of DOC changed with depth, suggesting that DOC lower in the peat profile was microbially sourced. When compared to other northern peatlands, soil CO2 emissions were relatively low, and soil CH4 emissions were approximately average. Dissolved organic carbon was also within the range of values from other northern peatlands, but was less aromatic and had a lower molecular weight. The results from this study suggest that the carbon dynamics of cedar peatlands are important. Additionally, enrichment planting appears to be a feasible strategy in restoration of degraded peatlands for at least two years after planting.
Book Synopsis Boreal Peatland Ecosystems by : R.K. Wieder
Download or read book Boreal Peatland Ecosystems written by R.K. Wieder and published by Springer Science & Business Media. This book was released on 2006-10-16 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first truly ecosystem-oriented book on peatlands. It adopts an ecosystems approach to understanding the world's boreal peatlands. The focus is on biogeochemical patterns and processes, production, decomposition, and peat accumulation, and it provides additional information on animal and fungal diversity. A recurring theme is the legacy of boreal peatlands as impressive accumulators of carbon as peat over millennia.
Book Synopsis Carbon Cycling in Northern Peatlands by : Andrew J. Baird
Download or read book Carbon Cycling in Northern Peatlands written by Andrew J. Baird and published by American Geophysical Union. This book was released on 2009-01-12 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 184. Carbon Cycling in Northern Peatlands examines the role that northern peatlands play in regulating the atmospheric carbon budget. It summarizes current research in four interconnected areas: large-scale peatland dynamics and carbon cycling; plant and microbial dynamics and their effect on carbon fluxes to the atmosphere; methane accumulation in, and loss from, peatlands; and water and dissolved carbon fluxes through peatlands. The volume highlights include A thorough assessment of the challenges involved in incorporating carbon cycling in northern peatlands into global climate models; A conceptual model to examine the partitioning of terminal carbon mineralization into production of CO2 and CH4; A comprehensive review of the evidence for the accumulation of methane in deep and shallow peat; and A description of the hydrologic changes induced by peat harvesting and associated challenges in restoring altered peatlands to their natural hydrologic regime. Carbon Cycling in Northern Peatlands will be of interest to research scientists and graduate and undergraduate students, particularly those who wish to know more about the role of peatlands in the global carbon cycle and their role as modifiers of climate.
Book Synopsis Late Quaternary Evolution and Carbon Cycling of Tropical Peatlands in Equatorial Southeast Asia by :
Download or read book Late Quaternary Evolution and Carbon Cycling of Tropical Peatlands in Equatorial Southeast Asia written by and published by . This book was released on 2015 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peatlands written by I.P. Martini and published by Elsevier. This book was released on 2007-03-28 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past two decades there has been considerable work on global climatic change and its effect on the ecosphere, as well as on local and global environmental changes triggered by human activities. From the tropics to the Arctic, peatlands have developed under various geological conditions, and they provide good records of global and local changes since the Late Pleistocene.The objectives of the book are to analyze topics such as geological evolution of major peatlands basins; peatlands as self sustaining ecosystems; chemical environment of peatlands: water and peat chemistry; peatlands as archives of environmental changes; influence of peatlands on atmosphere: circular complex interactions; remote sensing studies of peatlands; peatlands as a resource; peatlands degradation, restoration, plus more. * Presents an interdisciplinary approach, with an emphasis on Earth Science, and addresses the need for intergration between subdisciplines and the developing of new approaches* Synthesizes the evolutionary, ecological, and chemical characteristics of major peatlands, as well as focuses on the environmental changes, from climate changes to surface ares changes due to human activities* Covers topical studies of worldwide interest and provides examples from many different countries
Book Synopsis The Carbon Balance of Forest Biomes by : Howard Griffith
Download or read book The Carbon Balance of Forest Biomes written by Howard Griffith and published by Taylor & Francis. This book was released on 2004-03-01 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Carbon Balance of Forest Biomes provides an informed synthesis on the current status of forests and their future potential for carbon sequestration. This volume is timely, since convincing models which scale from local to regional carbon fluxes are needed to support these international agreements, whilst criticisms have been levelled at existing empirical approaches. One key question is to determine how well eddy-flux measurements at the stand-level represent regional-scale processes. This may be related to specific management practices (age, plantation, fertilisation) or simple bias in choosing representative sites (ease of access, roughness, proximity to physical barriers). The ecology and regeneration state of temperate, tropical and boreal forests under current climatic conditions are discussed, together with partitioning of photosynthetic and respiratory fluxes from soils and vegetation. The volume considers how to integrate contrasting methodologies, and the latest approaches for scaling from stand to the planetary boundary layer.
Book Synopsis Climate Feedbacks and the Role of Peatlands, Tundra, and Boreal Ecosystems in the Global Carbon Cycle by :
Download or read book Climate Feedbacks and the Role of Peatlands, Tundra, and Boreal Ecosystems in the Global Carbon Cycle written by and published by . This book was released on 1990 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recarbonization of the Biosphere by : Rattan Lal
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 Peatlands written by Ian D. Rotherham and published by Routledge. This book was released on 2020-04-28 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to peatlands for the non-specialist student reader and for all those concerned about environmental protection, and is an essential guide to peatland history and heritage for scientists and enthusiasts. Peat is formed when vegetation partially decays in a waterlogged environment and occurs extensively throughout both temperate and tropical regions. Interest in peatlands is currently high due to the degradation of global peatlands which is disrupting hydrology and contributing to greenhouse gas emissions. This book opens by explaining how peat is formed, its properties and worldwide distribution, and defines related terms such as mires, wetlands, bogs and marshes. There is discussion of the ecology and wildlife of peatlands as well as their ability to preserve pollen and organic remains as environmental archives. It also addresses the history, heritage and cultural exploitation of peat, extending back to pre-Roman times, and the degradation of peatlands over the centuries, particularly as a source of fuel but more recently for commercial horticulture. Other chapters discuss the ecosystem services delivered by peatlands, and how their destruction is contributing to biodiversity loss, flooding or drought, and climate change. Finally, the many current peatland restoration projects around the world are highlighted. Overall the book provides a wide-ranging but concise overview of peatlands from both a natural and social science perspective, and will be invaluable for students of ecology, geography, environmental studies and history.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251348375 Total Pages :270 pages Book Rating :4.2/5 (513 download)
Book Synopsis Recarbonizing global soils – A technical manual of recommended management practices by : Food and Agriculture Organization of the United Nations
Download or read book Recarbonizing global soils – A technical manual of recommended management practices written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2021-09-07 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decades, soil organic carbon (SOC) attracted the attention of a much wider array of specialists beyond agriculture and soil science, as it was proven to be one of the most crucial components of the earth’s climate system, which has a great potential to be managed by humans. Soils as a carbon pool are one of the key factors in several Sustainable Development Goals, in particular Goal 15, “Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification and halt and reverse land degradation and halt biodiversity loss” with the SOC stock being explicitly cited in Indicator 15.3.1. This technical manual is the first attempt to gather, in a standardized format, the existing data on the impacts of the main soil management practices on SOC content in a wide array of environments, including the advantages, drawbacks, and constraints. This manual presents different sustainable soil management (SSM) practices at different scales and in different contexts, supported by case studies that have been shown with quantitative data to have a positive effect on SOC stocks and successful experiences of SOC sequestration in practical field applications. Volume 2 includes a description of hot spots of SOC stocks. This manual defines hot spots of SOC as areas that represent a proportionally little of the global land surface but on which SOC storage is highly effective; bright spots as large land areas with low SOC stocks per km2 that represent a potential for further carbon sequestration.
Book Synopsis Tropical Peatland Ecosystems by : Mitsuru Osaki
Download or read book Tropical Peatland Ecosystems written by Mitsuru Osaki and published by Springer. This book was released on 2015-12-07 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an excellent resource for scientists, political decision makers, and students interested in the impact of peatlands on climate change and ecosystem function, containing a plethora of recent research results such as monitoring-sensing-modeling for carbon–water flux/storage, biodiversity and peatland management in tropical regions. It is estimated that more than 23 million hectares (62 %) of the total global tropical peatland area are located in Southeast Asia, in lowland or coastal areas of East Sumatra, Kalimantan, West Papua, Papua New Guinea, Brunei, Peninsular Malaysia, Sabah, Sarawak and Southeast Thailand. Tropical peatland has a vital carbon–water storage function and is host to a huge diversity of plant and animal species. Peatland ecosystems are extremely vulnerable to climate change and the impacts of human activities such as logging, drainage and conversion to agricultural land. In Southeast Asia, severe episodic droughts associated with the El Niño-Southern Oscillation, in combination with over-drainage, forest degradation, and land-use changes, have caused widespread peatland fires and microbial peat oxidation. Indonesia's 20 Mha peatland area is estimated to include about 45–55 GtC of carbon stocks. As a result of land use and development, Indonesia is the third largest emitter of greenhouse gases (2–3 Gtons carbon dioxide equivalent per year), 80 % of which is due to deforestation and peatland loss. Thus, tropical peatlands are key ecosystems in terms of the carbon–water cycle and climate change.
Book Synopsis Carbon Cycling at a Post-extraction Restored Peatland by : Kelly Nugent
Download or read book Carbon Cycling at a Post-extraction Restored Peatland written by Kelly Nugent and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Peatlands store large amounts of organic carbon (C) and are an important component of the global climate system. Climate and peatland land surfaces are closely coupled through land-atmosphere exchanges of greenhouse gases (GHG), such as carbon dioxide (CO2) and methane (CH4). When undisturbed, peatlands exert a long-term (millennia) negative radiative GHG forcing (climate cooling) through CO2 removal from the atmosphere, and a short-term (decades) positive forcing (climate warming) with the addition of CH4 to the atmosphere. Peatland drainage and extraction, however, results in mineralization of stored peat, releasing large amounts of CO2 while generally reducing CH4 to minimal levels. Rewetting and actively restoring vegetation is now a restoration approach used to reduce CO2 emissions from degraded peatlands. However, the timeframe needed for restoration to re-establish the C sink function of an undisturbed peatland remains poorly constrained due to a lack of multi-year measurements. In this thesis, I analyze three years of eddy covariance flux measurements from a post-extraction restored peatland in eastern Quebec, Canada that was restored 14 years prior. I link these measurements with flux footprint modelling, stable isotope fractionation data and pore water concentrations to characterize how belowground C cycling and fluxes are impacted by restoration. I combine a series of flux towers at post-extraction unrestored and restored peatlands in eastern and western Canada with an atmospheric perturbation model to further reveal how after-use management is affecting the global climate.The post-extraction restored peatland was a C sink of 78 ± 17 g C m-2 yr-1 within fourteen years of restoration, due to strong CO2 uptake and small CH4 emission and dissolved organic carbon export. A comparison with an undisturbed reference peatland (Mer Bleue) revealed annual NEE at the restored peatland was most similar to wetter, more productive years at the reference peatland. A mapping of post-extraction (1980 onwards) canopy structure changes showed broad comparability between the restored peatland and surrounding intact peatland within five years of restoration. The enhanced vegetation index results suggest that the developing vegetation in general had a normal response to environmental factors and was not experiencing any enduring stress from the underlying cutover peat. While the processes behind the surface net CO2 flux appear successfully recovered, approximately two thirds of the restored peatland was a minimal source of CH4, suggesting a lag in the recovery of belowground C cycling processes. Carbon turnover in the cutover peat beneath the new Sphagnum layer was slow and appeared to occur only with E. vaginatum substrate input and plant-mediated transport. The C isotopic fractionation factor for CH4 and CO2 in the restored field pore water exhibited a dominance of acetoclastic methane production, even deeper in the cutover peat profile. In contrast, isotopic fractionation in the former drainage ditches showed a balance of acetoclastic and hydrogenotrophic methanogenesis deeper in the profile, indicating that some bulk peat C turnover was occurring. Over time (decades), C turnover of the new peat is expected to limit the impacts of the cutover peat on the surface CH4 flux.Flux measurements at unrestored sites in eastern and western Canada reveal that not restoring post-extraction peatlands leads to decades of CO2 addition to the atmosphere, with low CH4 emission. The after-use decision to not restore results in a positive radiative forcing seven times more powerful than the negative forcing achieved by active restoration after 500 years. Prompt active restoration achieves a neutral climate impact about 155 years earlier than restoration after a 20-year delay. In contrast, IPCC Tier 1 emission factors based on a wide range of rewetting activities display a continually positive radiative forcing, even with prompt rewetting"--
Download or read book Treatise on Geomorphology written by and published by Academic Press. This book was released on 2013-02-27 with total page 6392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changing focus and approach of geomorphic research suggests that the time is opportune for a summary of the state of discipline. The number of peer-reviewed papers published in geomorphic journals has grown steadily for more than two decades and, more importantly, the diversity of authors with respect to geographic location and disciplinary background (geography, geology, ecology, civil engineering, computer science, geographic information science, and others) has expanded dramatically. As more good minds are drawn to geomorphology, and the breadth of the peer-reviewed literature grows, an effective summary of contemporary geomorphic knowledge becomes increasingly difficult. The fourteen volumes of this Treatise on Geomorphology will provide an important reference for users from undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic. Information on the historical development of diverse topics within geomorphology provides context for ongoing research; discussion of research strategies, equipment, and field methods, laboratory experiments, and numerical simulations reflect the multiple approaches to understanding Earth’s surfaces; and summaries of outstanding research questions highlight future challenges and suggest productive new avenues for research. Our future ability to adapt to geomorphic changes in the critical zone very much hinges upon how well landform scientists comprehend the dynamics of Earth’s diverse surfaces. This Treatise on Geomorphology provides a useful synthesis of the state of the discipline, as well as highlighting productive research directions, that Educators and students/researchers will find useful. Geomorphology has advanced greatly in the last 10 years to become a very interdisciplinary field. Undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic will find the answers they need in this broad reference work which has been designed and written to accommodate their diverse backgrounds and levels of understanding Editor-in-Chief, Prof. J. F. Shroder of the University of Nebraska at Omaha, is past president of the QG&G section of the Geological Society of America and present Trustee of the GSA Foundation, while being well respected in the geomorphology research community and having won numerous awards in the field. A host of noted international geomorphologists have contributed state-of-the-art chapters to the work. Readers can be guaranteed that every chapter in this extensive work has been critically reviewed for consistency and accuracy by the World expert Volume Editors and by the Editor-in-Chief himself No other reference work exists in the area of Geomorphology that offers the breadth and depth of information contained in this 14-volume masterpiece. From the foundations and history of geomorphology through to geomorphological innovations and computer modelling, and the past and future states of landform science, no "stone" has been left unturned!
Book Synopsis Short-term Effects of a Lowered Water Table on Carbon Cycling and Plant Community Structure in a Temperate Bog Margin by : Elissa Marie Goud
Download or read book Short-term Effects of a Lowered Water Table on Carbon Cycling and Plant Community Structure in a Temperate Bog Margin written by Elissa Marie Goud and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Peatlands are key features of the northern landscape and play a critical role in the global carbon cycle, storing approximately one-third of the global carbon pool. Although peatlands are generally a net carbon sink, they are sources of atmospheric methane (CH4) and changes in environmental conditions can amplify carbon release at both fine and large spatial scales. Hydrological disturbances, either natural or anthropogenic, can alter the structure and function of peatlands by changing their vegetation composition.To better understand the relationship between water table position, vegetation and carbon dynamics, I tested the short-term effects of a lowered water table on plant community structure, carbon dioxide (CO2) and CH4 flux at a temperate bog margin flooded by a beaver pond. I measured species abundance in 2012 and 2013 along three transects encompassing a hydrologic gradient from ombrotrophic bog to beaver pond and compared field measurements of CO2 exchange and CH4 flux from static chambers across 27 sites and 9 vegetation groups. I identified six distinct plant communities that contained characteristic species corresponding to changes in water table depth. The primary drivers of plant community structure were variables related to water table depth and water chemistry. I found unimodal or nearly unimodal responses of species abundance to mean water table position; the narrowest tolerances were found in the wettest vascular and bryophyte species and the widest tolerances were found in vascular and bryophyte species that occupied both hummocks and hollows. Lowering the water table did not alter bog species composition but minerotrophic species, particularly graminoids and aquatic Sphagnum mosses, increased onto previously inundated areas. Changes in abundance could be explained by differences in species optima and tolerances relative to water table depth. Vegetation composition was an important control on both CO2 exchange and CH4 flux rates. The lowered water table differentially affected the individual components of CO2 exchange due to differences between plant species and assemblages. There was an overall reduction in ecosystem respiration (ER), gross ecosystem photosynthesis (GEP) and CH4 flux after the drainage. I found unimodal relationships between weekly (GEP) and water table position, with hummock, hollow, margin, and moss vegetation groups clearly differentiating along the moisture gradient. My findings emphasize the importance of vegetation dynamics in this system, and the need for a better mechanistic understanding of the relationship between vegetation and carbon dynamics under field conditions." --