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A review of the challenges and opportunities in estimating above ground forest biomass using tree-level models

Accurate biomass measurements and analyses are critical components in quantifying carbon stocks and sequestration rates, assessing potential impacts due to climate change, locating bio-energy processing plants, and mapping and planning fuel treatments. To this end, biomass equations will remain a key component of future carbon measurements and estimation. As...

https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=year%3A%221941%22&%3Bf%5B0%5D=author_facet%3A%22Ford%2C%20Mark%22&f%5B0%5D=author_facet%3A%22Mercer%2C%20D.%20Evan%22&f%5B1%5D=author_facet%3A%22Gray%2C%20Andrew%22&f%5B2%5D=author_facet%3A%22Stanton%2C%20Sharon%22&f%5B3%5D=author_facet%3A%22Liang%2C%20Christina%22&f%5B4%5D=author_facet%3A%22Carey%2C%20Dave%22

Author(s):

Hailemariam Temesgen; David Affleck; Krishna Poudel; Andrew Gray; John Sessions

Year:

2015

Keywords:

biomass allometries, sampling error, uncertainity

Source:

Scandinavian Journal of Forest Research. 30(4): 326-335.

Comparison of five canopy cover estimation techniques in the western Oregon Cascades.

Estimates of forest canopy cover are widely used in forest research and management, yet methods used to quantify canopy cover and the estimates they provide vary greatly. Four commonly used ground-based techniques for estimating overstory cover - line-intercept, spherical densiometer, moosehorn, and hemispherical photography - and cover estimates generated from crown...

Author(s):

Anne C.S. Fiala; Steven L. Garman; Andrew N. Gray

Year:

2006

Keywords:

Oregon Cascades, canopy cover, line intercept, densiometer, moosehorn, hemispherical photography, FVS

Source:

Forest Ecology and Management. 232: 188-197

Evaluation of sampling strategies to estimate crown biomass

Depending on tree and site characteristics crown biomass accounts for a significant portion of the total aboveground biomass in the tree. Crown biomass estimation is useful for different purposes including evaluating the economic feasibility of crown utilization for energy production or forest products, fuel load assessments and fire management strategies, and wildfire...

Author(s):

Krishna P Poudel; Hailemariam Temesgen; Andrew N Gray

Year:

2015

Keywords:

aboveground biomass, crown, sampling strategies, pacific northwest

Source:

Forest Ecosystems. 2(1): 1-11. 11 p.

Estimating upper stem diameters and volume of Douglas-fir and Western hemlock trees in the Pacific northwest

Background: Volume and taper equations are essential for obtaining estimates of total and merchantable stem volume. Taper functions provide advantages to merchantable volume equations because they estimate diameter inside or outside bark at specific heights on the stem, enabling the estimation of total and merchantable stem volume, volume of individual logs, and a...

Author(s):

Krishna P. Poudel; Hailemariam Temesgen; Andrew N. Gray

Year:

2018

Keywords:

Pacific Northwest, biomass equations, utilization standards, diameter inside bark.

Source:

Forest Ecosystems. 5:16.

Estimating canopy cover from standard forest inventory measurements in western Oregon

Reliable measures of canopy cover are important in the management of public and private forests. However, direct sampling of canopy cover is both labor- and time-intensive. More efficient methods for estimating percent canopy cover could be empirically derived relationships between more readily measured stand attributes and canopy cover or, alternatively, the use of...

Author(s):

Anne McIntosh; Andrew Gray; Steven Garman

Year:

2012

Keywords:

crown closure, aerial photos, forest inventory and analysis, forest simulator, stocking equations

Source:

Forest Science. 58(2): 154-167

Evaluating alternative prescribed burning policies to reduce net economic damages from wildfire

We estimate a wildfire risk model with a new measure of wildfire output, intensity-weighted risk and use it in Monte Carlo simulations to estimate welfare changes from alternative prescribed burning policies. Using Volusia County, Florida as a case study, an annual prescribed burning rate of 13% of all forest lands maximizes net welfare; ignoring the effects on...

Author(s):

D. Evan Mercer; Jeffrey P. Prestemon; David T. Butry; John M. Pye

Year:

2007

Keywords:

policy, prescribed fire, stochastic dominance, wildfire

Source:

Amer. J. Agr. Econ., Vol. 89(1): 63-77

Estimation of aboveground forest carbon flux in Oregon: adding components of change to stock-difference assessments

A substantial portion of the carbon (C) emitted by human activity is apparently being stored in forest ecosystems in the Northern Hemisphere, but the magnitude and cause are not precisely understood. Current official estimates of forest C flux are based on a combination of field measurements and other methods. The goal of this study was to improve on existing methods...

Author(s):

Andrew N. Gray; Thomas R. Whittier; David L. Azuma

Year:

2014

Keywords:

carbon accounting, land-use change, disturbance, management, forest inventory

Source:

Forest Science. 60(2): 317-326. 10 p.

Tree mortality based fire severity classification for forest inventories: A Pacific Northwest national forests example

Determining how the frequency, severity, and extent of forest fires are changing in response to changes in management and climate is a key concern in many regions where fire is an important natural disturbance. In the USA the only national-scale fire severity classification uses satellite image changedetection to produce maps for large (>400 ha) fires, and is...

Author(s):

Thomas R. Whittier; Andrew N. Gray

Year:

2016

Keywords:

Fire effects, probabilistic sampling, forest monitoring, tree remeasurement, Forest Inventory and Analysis (FIA), wildfire

Source:

Forest Ecology and Management

Houston’s Urban Forest, 2015

An analysis of the urban forest in Houston, Texas, reveals that this area has an estimated 33.3 million live trees with tree canopy that covers 18.4 percent of the city. Roughly 19.2 million of the city?s trees are located on private lands. The most common tree species are yaupon, Chinese tallowtree, Chinese privet, Japanese privet, and sugarberry. Trees in Houston...

Author(s):

David J. Nowak; Allison R. Bodine; Robert E. Hoehn; Christopher B. Edgar; Gretchen Riley; Dudley R. Hartel; Kerry J. Dooley; Sharon M. Stanton; Mark A. Hatfield; Thomas J. Brandeis; Tonya W. Lister

Year:

2017

Keywords:

Air pollution removal, carbon sequestration, ecosystem services, tree value, urban forestry inventory.

Source:

Resour. Bull. SRS–211. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station.

An approach to estimating forest biomass change over a coniferous forest landscape based on tree-level analysis from repeated lidar surveys

Forests represent a significant opportunity for carbon sequestration, but quantifying biomass change at the landscape scale and larger remains a challenge. Here we develop an approach based on repeated tree-level analysis using high-resolution airborne lidar (around 8 pulses/m²). The study area was 53 km² of actively...

Author(s):

Sabrina B. Turner; David P. Turner; Andrew N. Gray; Will Fellers

Year:

2019

Keywords:

Lidar, tree biomass, growth.

Source:

International Journal of Remote Sensing. 40(7): 2558-2575.

Timber resource statistics for forest land in eastern Washington, January 2002.

This report summarizes timber resource statistics for the 20 counties in eastern Washington. The inventory sampled all private and public lands except those administered by the National Forest System in 2001, and those that were reserved from management for wood products. Area information for parks and other reserves was obtained directly from the organizations...

Author(s):

Andrew N. Gray; Jeremy S. Fried; Glenn Christensen; Larry Potts

Year:

2006

Keywords:

Forest inventory, statistics (forest), land area, land use change, timber volume, eastern Washington

Source:

Res. Bull. PNW-RB-251. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 46 p

Forest ecosystems are an important component of the global carbon (C) cycle. Recent research has indicated that large trees in general, and old-growth forests in particular, sequester substantial amounts of C annually. C sequestration rates are thought to peak and decline with stand age but the timing and controls are not well-understood. The objectives of this study...

Author(s):

Andrew N. Gray

Year:

2015

Keywords:

Source:

In: Stanton, Sharon M.; Christensen, Glenn A., comps. 2015. Pushing boundaries: new directions in inventory techniques and applications: Forest Inventory and Analysis (FIA) symposium 2015. 2015 December 8–10; Portland, Oregon. Gen. Tech. Rep. PNW-GTR-931. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 153-158.

A Real Options Method for Estimating the Adoption Potential of Forestry and Agroforestry Systems on Private Lands in the Lower Mississippi Alluvial Valley, USA

The Lower Mississippi River Alluvial Valley (LMAV), once was the largest forested bottom-land area in the continental United States, but has undergone widespread loss of forest through conversion to farmland. Restoration of forest functions and values has been a key conservation goal in the LMAV since the 1970s. This study utilizes a partial differential real options...

Author(s):

Gregory E. Frey; D. Evan Mercer; Frederick W. Cubbage; Robert C. Abt

Year:

2010

Keywords:

real options, agroforestry, adoption, alley cropping

Source:

In: Proceedings: XIII Wourld Forestry Congress. Buenos Aires, Argentina: 18-23 October 2009. 1-11.

Economic potential of agroforestry and forestry in the lower Mississippi Alluvial Valley with incentive programs and carbon payments

Conversion of bottomland hardwood forests in the Lower Mississippi Alluvial Valley (LMAV) to agricultural land has caused a loss of ecosystem services. The primary approaches to reverse this have been the Wetlands Reserve Program and the Conservation Reserve Program, which provide financial incentives to landowners to reforest. However, other forest production regimes...

Author(s):

Gregory E. Frey; D. Evan Mercer; Frederick W. Cubbage; Robert C. Abt

Year:

2011

Keywords:

soil expectation value, net present value, carbon emissions reductions, Wetlands Reserve Program, Lower Mississippi Alluvial Valley, bottomland hardwoods

Source:

Southern Journal of Applied Forestry 34(4):176-185

The Economic Value of Mangroves: A Meta-Analysis

This paper presents a synthesis of the mangrove ecosystem valuation literature through a meta-regression analysis. The main contribution of this study is that it is the first meta-analysis focusing solely on mangrove forests, whereas previous studies have included different types of wetlands. The number of studies included in the regression analysis is 44 for a total...

Author(s):

Marwa Salem; D. Evan Mercer

Year:

2012

Keywords:

mangroves, meta-regression analysis, nonmarket valuation

Source:

Sustainability 4:359-383

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Total Publications in Treesearch: 53,228

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A review of the challenges and opportunities in estimating above ground forest biomass using tree-level models

Comparison of five canopy cover estimation techniques in the western Oregon Cascades.

Evaluation of sampling strategies to estimate crown biomass

Estimating upper stem diameters and volume of Douglas-fir and Western hemlock trees in the Pacific northwest

Estimating canopy cover from standard forest inventory measurements in western Oregon

Evaluating alternative prescribed burning policies to reduce net economic damages from wildfire

Estimation of aboveground forest carbon flux in Oregon: adding components of change to stock-difference assessments

Tree mortality based fire severity classification for forest inventories: A Pacific Northwest national forests example

Houston’s Urban Forest, 2015

An approach to estimating forest biomass change over a coniferous forest landscape based on tree-level analysis from repeated lidar surveys

Timber resource statistics for forest land in eastern Washington, January 2002.

Water content measurement in forest soils and decayed wood using time domain reflectometry

Estimating individual-tree aboveground biomass of tree species in the western U.S.A.

Monitoring stand structure in mature coastal Douglas-fir forests: effect of plot size.

Potential of a national monitoring program for forests to assess change in high-latitude ecosystems

Influence of soil thickness on stand characteristics in a Sierra Nevada mixed-conifer forest

The role of old forests and big trees in forest carbon sequestration in the Pacific Northwest

A Real Options Method for Estimating the Adoption Potential of Forestry and Agroforestry Systems on Private Lands in the Lower Mississippi Alluvial Valley, USA

Economic potential of agroforestry and forestry in the lower Mississippi Alluvial Valley with incentive programs and carbon payments

The Economic Value of Mangroves: A Meta-Analysis

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