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Storage And Flux Of Carbon In Live Trees Snags And Logs In The Chugach And Tongass National Forests
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Book Synopsis Storage and Flux of Carbon in Live Trees, Snags, and Logs in the Chugach and Tongass National Forests by : Tara M. Barrett
Download or read book Storage and Flux of Carbon in Live Trees, Snags, and Logs in the Chugach and Tongass National Forests written by Tara M. Barrett and published by . This book was released on 2014-03-20 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides carbon storage and flux estimates for the two national forests in Alaska using inventory data from permanent plots established in 1995-2003 and remeasured in 2004-2010. Estimates of change are reported separately for growth, sapling recruitment, harvest, mortality, snag recruitment, salvage, snag falldown, and decay. Although overall aboveground carbon mass in live trees did not change in the Tongass National Forest, the Chugach National Forest showed a 4.5% increase. For the Tongass National Forest, results differed substantially for managed and unmanaged forest: managed lands had higher per-acre rates of sequestration through growth and recruitment, and carbon stores per acre that were higher for decomposing downed wood, and lower for live trees and snags. The species composition of carbon stores is changing on managed lands, with a carbon mass loss for yellow-cedar but increases for red alder and Sitka spruce. On unmanaged lands, the Chugach National forest had carbon mass increases in Sitka spruce and white spruce, and the Tongass National Forest had increases in western red cedar and red alder. Figures and tables. This is a print on demand report.
Book Synopsis Storage and Flux of Carbon in Live Trees, Snags, and Logs in the Chugach and Tongass National Forests by : United States Department of Agriculture
Download or read book Storage and Flux of Carbon in Live Trees, Snags, and Logs in the Chugach and Tongass National Forests written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-06-26 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon storage and flux estimates for the two national forests in Alaska are provided using inventory data from permanent plots established in 1995-2003 and remeasured in 2004-2010. Estimates of change are reported separately for growth, sapling recruitment, harvest, mortality, snag-recruitment, salvage, snag fall down, and decay
Download or read book Tongass Odyssey written by John Schoen and published by University of Alaska Press. This book was released on 2020-09-01 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tongass Odyssey is a biologist’s memoir of personal experiences over the past four decades studying brown bears, deer, and mountain goats and advocating for conservation of Alaska’s Tongass National Forest. The largest national forest in the nation, the Tongass encompasses the most significant expanse of intact old-growth temperate rainforest remaining on Earth. Tongass Odyssey is a cautionary tale of the harm that can result when science is eclipsed by politics that are focused on short-term economic gain. Yet even as those problems put the Tongass at risk, the forest also represents a unique opportunity for conserving large, intact landscapes with all their ecological parts, including wild salmon, bears, wolves, eagles, and other wildlife. Combining elements of personal memoir, field journal, natural history, conservation essay, and philosophical reflection, Tongass Odyssey tells an engaging story about an enchanting place.
Book Synopsis Carbon Storage and Accumulation in United States Forest Ecosystems by : Richard A. Birdsey
Download or read book Carbon Storage and Accumulation in United States Forest Ecosystems written by Richard A. Birdsey and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Storage in a Pacific Northwest Conifer Forest Ecosystem by : Jack E. Janisch
Download or read book Carbon Storage in a Pacific Northwest Conifer Forest Ecosystem written by Jack E. Janisch and published by . This book was released on 2001 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: As concern over global warming intensifies, sequestration and storage of atmospheric CO2 has become an important scientific and policy issue. Confusion persists, however, over interpretation of forest carbon (C) source-sink dynamics, in part because conclusions drawn depend on temporal and spatial scales of analysis (e.g. day-week scale vs. successional-scale), type of disturbance, and methodology (e.g. massbased vs. flux-based). There is a need to resolve this confusion given that strategies for mitigating anthropogenic CO2 emissions are based on estimates of forest C fluxes during various stages of succession, over which C fluxes and stores may change. Empirical study of changes in forest C stores can help to resolve this confusion by clarifying the C sources-sink dynamics of forests in space and time. To better understand the impacts of disturbance on C source-sink dynamics, changes in C stores of an evergreen-dominated forest on the Wind River Ranger District in Southwestern Washington, U.S.A., were investigated along a 500-year chronosequence of 36 stands. Principle objectives were to evaluate 1) decomposition rates (k) of logs, stumps, and below-ground coarse roots, 2) net primary productivity (NPP) of dominant tree species' boles at the stand level, and 3) successional changes in net ecosystem productivity (NEP) for live trees and coarse woody debris (CWD), here called NEPW. In the case of decomposition, log and stump k values did not differ significantly within the two principle species studied, indicating substitution of log k values for stump k values in models of forest C budgets may be valid when stump decomposition data is lacking. Decomposition rates between species differed, with Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) decomposing more slowly (k = 0.013 yr-1) relative to western hemlock (Tsuga heterophylla (Rafi) Sarg. (k = 0.036 yr-1). This difference in k between species was observed for both above-ground stumps and logs as well as below-ground coarse roots. Given our mean k estimates and adjusting for regenerating stand age, these stands are losing C at a rate of 0.16-0.83 Mg C ha-1 yr-1 (assuming all CWD is P. menziesii) to 0.13-1.68 Mg C ha-1 yr-1 (assuming all CWD is T. heterophylla) from stumps, logs, and snags. Including coarse roots increases these losses to 0.28-1.25 Mg C ha-1 yr-1 and 0.30-2.53 Mg C ha-1 yr-1, respectively. Based on these findings, if fragmentation of these decomposing C pools is ignored, and fragmented fractions have oxidized to CO2, stands thought to be net C sinks could in reality be net C sources to the atmosphere. Net primary production in tree boles (NPPb) of regenerating stands (so called second-growth) ranged between 0.15-5.28 Mg C ha-1 yr-1. NPPb of 500-year old stands ranged between 1.3-3.9 Mg C ha-1 yr-1, similar to NPPb of boles in 20-25 year old secondgrowth. Mean radial increment widths from old-growth stands indicated that NPPb of these stands (neglecting mortality) can increase, decrease, or remain relatively constant. Based on 5-year increments for the previous fifteen years, the majority of old-growth stands sampled showed small increases in radial growth over time. Timing of the transition from negative to positive of NEPW ranged between 0 and 57 years after disturbance and depended strongly on live-tree growth rates as well as the fate of CWD and harvested wood. Estimated maximum and minimum NEPW were 3.9 Mg C ha-1 yr-1 and 14.1 Mg C ha-1 yr-1, respectively. Maximum mean C stores of 393 Mg C ha-1 were reached approximately 200 years after disturbance. At a rotation age of 80 years, regenerating stands stored approximately 50% as much C in woody biomass as a 500-year old primary forest, indicating conversion of older forests to plantations released C to the atmosphere. Given the high biomass of mature and old-growth stands relative to younger regenerating stands in the forest studied, landscape C stores in live wood would appear to be maximized in stands of older age classes.
Book Synopsis Forest Inventory-based Estimation of Carbon Stocks and Flux in California Forests in 1990 by : Jeremy Steven Fried
Download or read book Forest Inventory-based Estimation of Carbon Stocks and Flux in California Forests in 1990 written by Jeremy Steven Fried and published by . This book was released on 2008 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of forest carbon stores and flux for California circa 1990 were modeled from forest inventory data in support of California's legislatively mandated greenhouse gas inventory. Reliable estimates of live-tree carbon stores and flux on timberlands outside of national forest could be calculated from periodic inventory data collected in the 1980s and 1990s; however, estimation of circa 1990 flux on national forests and forests other than timberland was problematic owing to a combination of changing inventory protocols and definitions and the lack of remeasurement data on those land categories. We estimate annual carbon flux on the 7.97 million acres of timberlands outside of national forests (which account for 24 percent of California's forest area and 28 percent of its live tree aboveground biomass) at 2.9 terragrams per year.
Book Synopsis Carbon in U.S. Forests and Wood Products, 1987-1997: State-by-State Estimates by : G. M. Lewis
Download or read book Carbon in U.S. Forests and Wood Products, 1987-1997: State-by-State Estimates written by G. M. Lewis and published by DIANE Publishing. This book was released on 2003 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Alaska Region, 1910-2012 by :
Download or read book Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Alaska Region, 1910-2012 written by and published by . This book was released on 2014 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global forests capture and store significant amounts of carbon through photosynthesis. When carbon is removed from forests through harvest, a portion of the harvested carbon is stored in wood products, often for many decades. The United States Forest Service (USFS) and other agencies are interested in accurately accounting for carbon flux associated with harvested wood products (HWP) to meet greenhouse gas monitoring commitments and climate change adaptation and mitigation objectives. National-level forest carbon accounting has been in place for over a decade, but there is an increasing need for accounting for smaller scale administrative units, including USFS National Forest System regions and individual National Forests. This paper uses the Intergovernmental Panel on Climate Change (IPCC) production accounting approach to estimate HWP carbon storage from 1910 to 2012 for the USFS Alaska Region. For the Alaska Region as a whole, carbon stocks in the HWP pool were increasing at nearly one-half million megagrams of carbon (MgC) per year in the late 1960s and early 1970s, with peak cumulative storage of 13.5 million MgC occurring in 1996. Net positive flux into the HWP pool over this period is primarily attributable to high harvest levels in the mid-1950s through the 1990s. Harvest levels declined after 1990, resulting in less carbon entering the HWP pool. Since 2005, emissions from HWP at solid waste disposal sites have exceeded additions from harvesting, resulting in a decline in the total amount of carbon stored in the HWP pool. The Alaska Region HWP pool is now in a period of negative net annual stock change because the decay of products harvested between 1910 and 2012 exceeds additions of carbon to the HWP pool through harvest. Together with estimates of ecosystem carbon, which are also being developed through the Forest Management Carbon Framework (ForCaMF), regional level estimates of HWP carbon flux can be used to inform management decisions and guide climate change adaptation and mitigation efforts by the agency. Though our emphasis is on the Alaska Region as a whole, this accounting method can be applied more broadly at smaller land management units, such as National Forests.
Book Synopsis Measurement Guidelines for the Sequestration of Forest Carbon by : Timothy R. H. Pearson
Download or read book Measurement Guidelines for the Sequestration of Forest Carbon written by Timothy R. H. Pearson and published by . This book was released on 2007 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement guidelines for forest carbon sequestration were developed to support reporting by public and private entities to greenhouse gas registries. These guidelines are intended to be a reference for designing a forest carbon inventory and monitoring system by professionals with a knowledge of sampling, statistical estimation, and forest measurements. This report provides guidance on defining boundaries; measuring, monitoring, and estimating changes in carbon stocks; implementing plans to measure and monitor carbon; and developing quality assurance and quality control plans to ensure credible and reproducible estimates of the carbon credits.
Book Synopsis The Carbon Content of Trees by : George Matthews
Download or read book The Carbon Content of Trees written by George Matthews and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regional and Forest-level Estimates of Carbon Stored in Harvested Wood Products from the United States Forest Service Northern Region, 1906-2010 by : Nathaniel M. Anderson
Download or read book Regional and Forest-level Estimates of Carbon Stored in Harvested Wood Products from the United States Forest Service Northern Region, 1906-2010 written by Nathaniel M. Anderson and published by . This book was released on 2013 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global forests capture and store significant amounts of CO2 through photosynthesis. When carbon is removed from forests through harvest, a portion of the harvested carbon is stored in wood products, often for many decades. The United States Forest Service (USFS) and other agencies are interested in accurately accounting for carbon flux associated with harvested wood products (HWP) to meet greenhouse gas monitoring commitments and climate change adaptation and mitigation objectives. National-level forest carbon accounting has been in place for over a decade, but there is an increasing need for accounting at the scale of smaller administrative units, including USFS Regions and individual national forests. This paper uses the Intergovernmental Panel on Climate Change (IPCC) production accounting approach and the California Forest Project Protocol (CFPP) to estimate HWP carbon storage from 1906 to 2010 for the USFS Northern Region and its eleven national forests, which span northern Idaho, Montana, South Dakota, and eastern Washington. For the Northern Region as a whole, carbon stocks in the HWP pool were increasing at one million megagrams of carbon (MgC) per year in the mid-1960s, with peak cumulative storage of 28 million MgC occurring in 1995. Net positive flux into the HWP pool over this period is primarily attributable to high harvest levels in the middle of the twentieth century. Harvest levels declined after 1970, resulting in less carbon entering the HWP pool. Since 1995, emissions from HWP at solid waste disposal sites have exceeded additions from harvesting, resulting in a decline in the total amount of carbon stored in the HWP pool. The Northern Region HWP pool is now in a period of negative net annual stock change because the decay of products harvested between 1906 and 2010 exceeds additions of carbon to the HWP pool through harvest. Though most individual national forests mirror Regional-level trends in harvest and carbon flux, the timing and magnitude of change differs among forests with some forests departing notably from Regional trends. Together with estimates of ecosystem carbon, Regional and Forest-level estimates of HWP carbon flux can be used to inform management decisions and guide climate change adaptation and mitigation efforts by the agency. Though our emphasis is on national forests in the Northern Region, we provide a framework by which these accounting methods can be applied more broadly at sub-national scales to other regions, land management units, and firms.
Book Synopsis Carbon Flux and Storage of Russell Sage WMA: a Bottomland Hardwood Forest by :
Download or read book Carbon Flux and Storage of Russell Sage WMA: a Bottomland Hardwood Forest written by and published by . This book was released on 2015 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Northern Region, 1906-2012 by :
Download or read book Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Northern Region, 1906-2012 written by and published by . This book was released on 2014 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global forests capture and store significant amounts of carbon through photosynthesis. When carbon is removed from forests through harvest, a portion of the harvested carbon is stored in wood products, often for many decades. The United States Forest Service (USFS) and other agencies are interested in accurately accounting for carbon flux associated with harvested wood products (HWP) to meet greenhouse gas monitoring commitments and climate change adaptation and mitigation objectives. National-level forest carbon accounting has been in place for over a decade, but there is an increasing need for accounting for smaller scale administrative units, including USFS National Forest System regions and individual National Forests. This paper uses the Intergovernmental Panel on Climate Change (IPCC) production accounting approach to estimate HWP carbon storage from 1906 to 2012 for the USFS Northern Region. For the Northern Region as a whole, carbon stocks in the HWP pool were increasing at approximately 680,000 megagrams of carbon (MgC) per year in the early1950s through the mid-1990s, with peak cumulative storage of 34.1 million MgC occurring in 1995. Net positive flux into the HWP pool over this period is primarily attributable to high harvest levels in the early1960s through the early 1990s. In the years between the early-1960s and the late 1970s timber harvests were at high levels and experienced moderate variability, with high harvests of over 3.1 million ccf (2.3 million MgC) occurring four times during this period. Harvest levels from National Forests of the Northern Region have since declined to less than 450,000 ccf (340,000 MgC) per year, resulting in less carbon entering the HWP pool. Since 1996, emissions from HWP at solid waste disposal sites exceeded additions from harvesting, resulting in a decline in the total amount of carbon stored in the HWP pool. The Northern Region's HWP pool is now in a period of negative net annual stock change because the decay of products harvested between 1906 and 2012 exceeds additions of carbon to the HWP pool through harvest. Together with estimates of ecosystem carbon, which are also being developed through the Forest Management Carbon Framework (ForCaMF), regional level estimates of HWP carbon flux can be used to inform management decisions and guide climate change adaptation and mitigation efforts by the agency. Though our emphasis is on the Northern Region as a whole, this accounting method can be applied more broadly at smaller land management units, such as National Forests.
Book Synopsis Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Eastern Region, 1911-2012 by :
Download or read book Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Eastern Region, 1911-2012 written by and published by . This book was released on 2014 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global forests capture and store significant amounts of carbon through photosynthesis. When carbon is removed from forests through harvest, a portion of the harvested carbon is stored in wood products, often for many decades. The United States Forest Service (USFS) and other agencies are interested in accurately accounting for carbon flux associated with harvested wood products (HWP) to meet greenhouse gas monitoring commitments and climate change adaptation and mitigation objectives. National-level forest carbon accounting has been in place for over a decade, but there is an increasing need for accounting for smaller scale administrative units, including USFS National Forest System regions and individual National Forests. This paper uses the Intergovernmental Panel on Climate Change (IPCC) production accounting approach to estimate HWP carbon storage from 1911 to 2012 for the USFS Eastern Region. For the Eastern Region as a whole, carbon stocks in the HWP pool were increasing steadily from 100,000 megagrams of carbon (MgC) per year in the early 1950s up to 416,000 MgC in 1987, with peak cumulative storage to date of slightly less than 12.7 million MgC occurring in 2013. Net positive flux into the HWP pool over this period is primarily attributable to high harvest levels in the 1980s and 1990s. Harvest levels have declined since the 1990s and have been erratic since the year 2000, yet carbon entering the HWP pool continues to increase. The Eastern Region HWP pool has always been in a state of positive net annual stock change because additions of carbon to the HWP pool through harvest exceeds the decay of products harvested between 1911 and 2012. Together with estimates of ecosystem carbon, which are also being developed through the Forest Management Carbon Framework (ForCaMF), regional level estimates of HWP carbon flux can be used to inform management decisions and guide climate change adaptation and mitigation efforts by the agency. Though our emphasis is on the Eastern Region as a whole, this accounting method can be applied more broadly at smaller land management units, such as National Forests.
Book Synopsis Modeling the Effects of Potential Management Regimes on Carbon Sequestration in the Tongass National Forest, USA, Using Spatial Analysis by : Wayne Waterman Leighty
Download or read book Modeling the Effects of Potential Management Regimes on Carbon Sequestration in the Tongass National Forest, USA, Using Spatial Analysis written by Wayne Waterman Leighty and published by . This book was released on 2001 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Flux and Storage in European Forests by : M. G. R. (Melvin) Cannell
Download or read book Carbon Flux and Storage in European Forests written by M. G. R. (Melvin) Cannell and published by . This book was released on 1991 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Southern Region, 1911-2012 by :
Download or read book Estimates of Carbon Stored in Harvested Wood Products from United States Forest Service Southern Region, 1911-2012 written by and published by . This book was released on 2014 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global forests capture and store significant amounts of carbon through photosynthesis. When carbon is removed from forests through harvest, a portion of the harvested carbon is stored in wood products, often for many decades. The United States Forest Service (USFS) and other agencies are interested in accurately accounting for carbon flux associated with harvested wood products (HWP) to meet greenhouse gas monitoring commitments and climate change adaptation and mitigation objectives. National-level forest carbon accounting has been in place for over a decade, but there is an increasing need for accounting for smaller scale administrative units, including USFS National Forest System regions and individual National Forests. This paper uses the Intergovernmental Panel on Climate Change (IPCC) production accounting approach to estimate HWP carbon storage from 1911 to 2012 for the USFS Southern Region. For the Southern Region as a whole, carbon stocks in the HWP pool were increasing at approximately 400,000 megagrams of carbon (MgC) per year in the late 1950s through the early 1980s, with peak cumulative storage to date of 24.9 million MgC occurring in 2012. Net positive flux into the HWP pool over this period is primarily attributable to high harvest levels in the mid-1950s through the mid-1990s. Harvest levels have been erratic since the late 1990s, yet carbon entering the HWP pool continues to increase. Following 5 years beginning in 2002 when emissions from HWP at solid waste disposal sites exceeded additions from harvesting, the Southern Region HWP pool is now in a period of positive net annual stock change because additions of carbon to the HWP pool through harvest exceeds the decay of products harvested between 1911 and 2012. Together with estimates of ecosystem carbon, which are also being developed through the Forest Management Carbon Framework (ForCaMF), regional level estimates of HWP carbon flux can be used to inform management decisions and guide climate change adaptation and mitigation efforts by the agency. Though our emphasis is on the Southern Region as a whole, this accounting method can be applied more broadly at smaller land management units, such as National Forests.
