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189 results found
We collected soil samples from 27 study sites across North Central United States to compare the soil carbon of short rotation poplar plantations to adjacent agricultural crops and woodlots. Soil organic carbon (SOC) ranged from 20 to more than 160 Mg/ha across the sampled sites. Lowest SOC levels…
Author(s): Mark D. Coleman, J.G. Isebrands, David N. Tolsted, Virginia R. Tolbert
Keywords: carbon sequestration, hybrid poplar, switchgrass, soil bulk density, bioenergy, climate change
Source: Environmental Management Vol. 33, Supplement 1, pp. S299–S308
Year: 2004
Intensive forestry may reduce net CO2 emission into atmosphere by storing carbon in living biomass, dead organic matter and soil, and durable wood products. Because quantification of belowground carbon dynamics is important for reliable estimation of the carbon sequestered by intensively managed…
Author(s): Lisa J. Samuelson, Kurt Johnsen, Tom Stokes, Weinlang Lu
Keywords: loblolly pine, fertilization, carbon sequestration, soil respiration
Source: Forest Ecology and Management 200 (2004) 335–345
Year: 2004
We established Populus deltoides Bartr. stands differing in nitrogen (N) availability and tested if: (1) N-induced carbon (C) allocation could be explained by develop- mental allocation controls; and (2) N uptake per unit root mass, i.e., specific N-uptake rate, increased with N availability.…
Author(s): Mark D. Coleman, Christel C. Kern
Keywords: belowground allocation, carbon sequestration, functional equilibrium, ontogenetic drift, phytoremediation, short rotation woody crops, specific nutrient uptake
Source: Tree Physiology 24, 1347-1357
Year: 2004
In managed forests, the amount of carbon further sequestered will be determined by (1) the increased amount of carbon in standing biomass (resulting from land-use changes and increased productivity); (2) the amount of recalcitrant carbon remaining below ground at the end of rotations; and (3) the…
Author(s): Kurt H. Johnsen, David N. Wear, R. Oren, R.O. Teskey, Felipe Sanchez, Rodney E. Will, John Butnor, D. Markewitz, D. Richter, T. Rials, H.L. Allen, J. Seiler, D. Ellsworth, Christopher Maier, G. Katul, P.M. Dougherty
Keywords: carbon sequestration, southern pine forests
Source: Journal of Forestry. 99(4): 14-21
Year: 2001
An assessment of trees in Brooklyn, New York, reveal that this borough has approximately 610,000 trees with canopies that cover 11.4 percent of the area. The most common trees are estimated to be tree of heaven, white mulberry, black locust, Norway maple and black cherry. Brooklyn's trees currently…
Author(s): David J. Nowak, Daniel E. Crane, Jack C. Stevens, Myriam Ibarra
Keywords: urban forestry, carbon sequestration, global climate change, air quality, air pollution
Source: Gen. Tech. Rep. NE-290. Newtown Square, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station 107 p.
Year: 2002
This report documents trends and impacts of climate change on America's forests as required by the Renewable Resources Planning Act of 1974. Recent research on the impact of climate and elevated atmospheric carbon dioxide on plant productivity is synthesized. Modeling analyses explore the potential…
Author(s): Linda A. Joyce, Richard Birdsey
Keywords: forest productivity, vegetation change, carbon sequestration, mitigation, forest sector, timber inventory, soil carbon, carbon accounting, afforestation, deforestation
Source: Gen. Tech. Rep. RMRS-GTR-59. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 133 p.
Year: 2000
Includes a large set of published values of forest floor mass and develop large-scale estimates of carbon mass according to region and forest type. Estimates of average forest floor carbon mass per hectare of forest applied to a 1997 summary forest inventory, sum to 4.5 Gt carbon stored in forests…
Author(s): James E. Smith, Linda S. Heath
Keywords: forest carbon budget, carbon sequestration, afforestation
Source: Res. Pap. NE-722. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 37 p.
Year: 2002
Includes methods and equations for nationally consistent estimates of tree-mass density at the stand level (Mg/ha) as predicted by growing-stock volumes reported by the USDA Forest Service for forests of the conterminous United States. Developed for use in FORCARB, a carbon budget model for U.S.…
Author(s): James E. Smith, Linda S. Heath, Jennifer C. Jenkins
Keywords: biomass, carbon, carbon sequestration, forest, live and standing dead trees
Source: Gen. Tech. Rep. NE-298. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 57 p.
Year: 2003
Based on field data from 10 USA cities and national urban tree cover data, it is estimated that urban trees in the coterminous USA currently store 700 million tonnes of carbon ($14,300 million value) with a gross carbon sequestration rate of 22.8 million tC/yr ($460 rnillion/year). Carbon storage…
Author(s): David J. Nowak, Daniel E. Crane
Keywords: global climate change, carbon dioxide, urban forestry, carbon storage, carbon sequestration
Source: Environmental Pollution
Year: 2002
Although many forests are actively sequestering carbon, little research has examined the direct effects of forest management practices on carbon sequestration. At the Howland Forest in Maine, USA, we are using eddy covariance and biometric techniques to evaluate changes in carbon storage following…
Author(s): Neal A. Scott, Charles A. Rodrigues, Holly Hughes, John T. Lee, Eric A. Davidson, D Bryan Dail, Phil Malerba, David Y. Hollinger
Keywords: forest management, forest carbon budgets, carbon sequestration, shelterwood cut, Howland Forest, Maine
Source: Environmental Management. 33(S1): S9-S22.
Year: 2004