Access the full text.
Sign up today, get DeepDyve free for 14 days.
M. Eden, P. Furley, D. McGregor, W. Milliken, J. Ratter (1991)
Effect of forest clearance and burning on soil properties in northern Roraima, BrazilForest Ecology and Management, 38
(1966)
Amazon Soils
M. Stuiver, H. Polach (1977)
Discussion Reporting of 14C DataRadiocarbon, 19
M. Fisher, I. Rao, M. Ayarza, C. Lascano, J. Sanz, R. Thomas, R. Vera (1994)
Carbon storage by introduced deep-rooted grasses in the South American savannasNature, 371
V. Vitorello, C. Cerri, F. Andreux, C. Feller, R. Victoria (1989)
Organic matter and natural carbon-13 distribution in forested and cultivated oxisolsSoil Science Society of America Journal, 53
J. Raich, K. Nadelhoffer (1989)
Belowground Carbon Allocation in Forest Ecosystems: Global TrendsEcology, 70
A. Townsend, P. Vitousek, E. Holland (1992)
Tropical soils could dominate the short-term carbon cycle feedbacks to increased global temperaturesClimatic Change, 22
D. Nepstad, P. Jipp, P. Moutinho, G. Negreiros, S. Vieira (1995)
Forest Recovery Following Pasture Abandonment in Amazonia: Canopy Seasonality, Fire Resistance and Ants
J. Balesdent, A. Mariotti, B. Guillet (1987)
Natural 13C abundance as a tracer for studies of soil organic matter dynamicsSoil Biology & Biochemistry, 19
S. Hecht (1985)
Environment, Development and Politics: Capital Accumulation and the Livestock Sector in Eastern AmazoniaWorld Development, 13
R. Bowden, K. Nadelhoffer, R. Boone, J. Melillo, J. Garrison (1993)
Contributions of aboveground litter, belowground litter, and root respiration to total soil respiration in a temperate mixed hardwood forestCanadian Journal of Forest Research, 23
W. Post, W. Emanuel, P. Zinke, A. Stangenberger (1982)
Soil carbon pools and world life zonesNature, 298
Stuiver Stuiver, Polach Polach (1977)
Reporting of 14 C dataRadiocarbon, 19
J. Bauer, P. Williams, E. Druffel (1992)
Recovery of Submilligram Quantities of Carbon Dioxide from Gas Streams by Molecular Sieve for Subsequent Determination of Isotopic ( 13C and 14C) Natural AbundancesAnalytical Chemistry, 64
R. Millington, R. Shearer (1971)
Diffusion in Aggregated Porous MediaSoil Science, 3
W. Sombroek, F. Nachtergaele, A. Hebel (1993)
AMOUNTS, DYNAMICS AND SEQUESTERING OF CARBON IN TROPICAL AND SUBTROPICAL SOILSAMBIO: A Journal of the Human Environment, 22
E. Davidson, S. Trumbore (1995)
Gas diffusivity and production of CO2 in deep soils of the eastern AmazonTellus B, 47
M. Mattos, C. Uhl (1994)
Economic and ecological perspectives on ranching in the Eastern AmazonWorld Development, 22
A. Townsend, P. Vitousek, S. Trumbore (1995)
Soil organic matter dynamics along gradients in temperature and land use on the Island of HawaiiEcology, 76
E. Veldkamp (1994)
Organic Carbon Turnover in Three Tropical Soils under Pasture after DeforestationSoil Science Society of America Journal, 58
H. Dörr, K. Münnich (1986)
Annual Variations of the 14C Content of Soil CO2Radiocarbon, 28
D. Richter, L. Babbar (1991)
Soil Diversity in the TropicsAdvances in Ecological Research, 21
J. Vogel (1992)
Rapid Production of Graphite Without Contamination for Biomedical AMSRadiocarbon, 34
J. Southon, J. Vogel, S. Trumbore, J. Davis, M. Roberts, M. Caffee, R. Finkel, I. Proctor, D. Heikkinen, A. Berno, R. Hornady (1991)
Progress in AMS Measurements at the LLNL SpectrometerRadiocarbon, 34
D. Nepstad, C. Uhl, E. Serrão (1991)
Recuperation of a degraded Amazonian landscape: forest recovery and agricultural restoration.AMBIO: A Journal of the Human Environment, 20
D. Schimel, B. Braswell, E. Holland, R. Mckeown, D. Ojima, '. Painter, W. Parton, 4. AlanR.Townsend
University of New Hampshire Scholars' Repository University of New Hampshire Scholars' Repository
K. Nadelhoffer, J. Raich (1992)
Fine Root Production Estimates and Belowground Carbon Allocation in Forest EcosystemsEcology, 73
D. Skole, C. Tucker (1993)
Tropical Deforestation and Habitat Fragmentation in the Amazon: Satellite Data from 1978 to 1988Science, 260
Schimel Schimel, Braswell Braswell, Holland Holland, McKeown McKeown, Ojima Ojima, Painter Painter, Parton Parton, Townsend Townsend (1994)
Climatic, edaphic and biotic controls over storage and turnover of carbon in soilsGlobal Biogeochem. Cycles, 8
E. Veldkamp (1993)
Soil organic carbon dynamics in pastures established after deforestation in the humid tropics of Costa Rica
T. Desjardins, F. Andreux, B. Volkoff, C. Cerri (1994)
Organic carbon and 13C contents in soils and soil size-fractions, and their changes due to deforestation and pasture installation in eastern AmazoniaGeoderma, 61
Dr. Böhm (1979)
Methods of Studying Root Systems
R. Detwiler (1986)
Land use change and the global carbon cycle: the role of tropical soilsBiogeochemistry, 2
T. Choné, F. Andreux, J. Corrêa, C. Cerri, B. Volkoff (1991)
Changes in Organic Matter in an Oxisol from the Central Amazonian Forest During Eight Years as Pasture, Determined by 13C Isotopic Composition, 6
D. Nepstad, C. Carvalho, E. Davidson, P. Jipp, P. Lefebvre, G. Negreiros, Elson Silva, T. Stone, S. Trumbore, S. Vieira (1994)
The role of deep roots in the hydrological and carbon cycles of Amazonian forests and pasturesNature, 372
J. Raich, W. Schlesinger (1992)
The global carbon dioxide flux in soil respiration and its relationship to vegetation and climateTellus B, 44
(1994)
Atmospheric A14C record from Wellington
W. Mook, J. Jongsma (1987)
Measurement of the N20 correction for 13C/12C ratios of atmospheric C02 by removal of N20
Raich Raich, Nadelhoffer Nadelhoffer (1989)
Belowground allocation in forest ecosystems — Global trendsEcology, 70
Luizão Luizão, Schubart Schubart (1987)
Litter production and decomposition in a terra firme forest of Central AmazoniaExperientia, 43
(1993)
Quaternary Geology of South America
H. Klinge (1968)
Litter Production in an Area of Amazonian Terra Firme Forest. Part I.Litter - fall, Organic carbon and total Nitrogen Contents of Litter')., 1
Lugo Lugo, Brown Brown (1993)
Management of tropical soils as sinks or sources of atmospheric carbonPlant Soil, 149
C. Cerri, B. Eduardo, M. Piccolo (1991)
Use of stable isotopes in soil organic matter studies
Davidson Davidson, Trumbore Trumbore (1995)
Production of CO 2 in deep soils of the eastern AmazonTellus
S. Trumbore, Sherry Schiff, R. Aravena, R. Elgood (1992)
Sources and Transformation of Dissolved Organic Carbon in the Harp Lake Forested Catchment: The Role of SoilsRadiocarbon, 34
W. Mook, J. Jongsma (1987)
Measurement of the N2O correction for 13C/12C ratios of atmospheric CO2 by removal of N2OTellus B, 39
W. Parton, D. Schimel, C. Cole, D. Ojima (1987)
Analysis of factors controlling soil organic matter levels in Great Plains grasslandsSoil Science Society of America Journal, 51
E. Davidson, I. Ackerman (1993)
Changes in soil carbon inventories following cultivation of previously untilled soilsBiogeochemistry, 20
H. Jenny, S. Gessel, F. Bingham (1949)
COMPARATIVE STUDY OF DECOMPOSITION RATES OF ORGANIC MATTER IN TEMPERATE AND TROPICAL REGIONSSoil Science, 171
J. Vogel, J. Southon, D. Nelson, T. Brown (1984)
Performance of catalytically condensed carbon for use in accelerator mass spectrometryNuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, 5
Trumbore Trumbore (1993)
Comparison of carbon dynamics in two soils using measurements of radiocarbon in pre‐and post‐bomb soilsGlobal Biogeochem. Cycles, 7
C. Potter, J. Randerson, C. Field, P. Matson, P. Vitousek, H. Mooney, S. Klooster (1993)
Terrestrial ecosystem production: A process model based on global satellite and surface dataGlobal Biogeochemical Cycles, 7
S. Fan, S. Wofsy, P. Bakwin, D. Jacob, D. Fitzjarrald (1990)
Atmosphere‐biosphere exchange of CO2 and O3 in the central Amazon ForestJournal of Geophysical Research, 95
Hecht Hecht (1985)
Development and politics: capital accumulation and the livestock sector in eastern AmazoniaWorld Devel., 13
W. Schlesinger (1977)
Carbon Balance in Terrestrial DetritusAnnual Review of Ecology, Evolution, and Systematics, 8
Y. Hsieh (1992)
Pool Size and Mean Age of Stable Soil Organic Carbon in CroplandSoil Science Society of America Journal, 56
(1992)
A rapid method for preparation of biomedical targets for AMS
Trumbore Trumbore, Schiff Schiff, Aravena Aravena, Elgood Elgood, Dillon Dillon (1992)
Source of dissolved organic carbon in surface and groundwaters in a forested catchment: the role of soilsRadiocarbon, 34
Vogel Vogel, Southon Southon, Nelson Nelson, Brown Brown (1984)
Performance of catalytically condensed carbon for use in AMSNucl. Instrum. Methods Phy. Res. Sect B, 5
S. Trumbore (1993)
Comparison of carbon dynamics in tropical and temperate soils using radiocarbon measurementsGlobal Biogeochemical Cycles, 7
M. Elgabaly, L. Wiklander (1949)
EFFECT OF EXCHANGE CAPACITY OF CLAY MINERALS AND ACIDOID CONTENT OF PLANT ON UPTAKE OF SODIUM AND CALCIUM BY EXCISED BARLEY AND PEA ROOTSSoil Science, 67
(1993)
The effect of temperature and land use on soil carbon storage in forest ecosystems of Hawaii
G. Topp, J. Davis (1985)
Measurement of Soil Water Content using Time‐domain Reflectrometry (TDR): A Field EvaluationSoil Science Society of America Journal, 49
Forests in seasonally dry areas of eastern Amazonia near Paragominas, Pará, Brazil, maintain an evergreen forest canopy through an extended dry season by taking up soil water through deep (>1 m) roots. Belowground allocation of C in these deep‐rooting forests is very large (1900 g C m−2 yr−1) relative to litterfall (460 g C m−2 yr−1). The presence of live roots drives an active carbon cycle deeper than l m in the soil. Although bulk C concentrations and 14C contents of soil organic matter at >l‐m depths are low, estimates of turnover from fine‐root inputs, CO2 production, and the 14C content of CO2 produced at depth show that up to 15% of the carbon inventory in the deep soil has turnover times of decades or less. Thus the amount of fast‐cycling soil carbon between 1 and 8‐m depths (2–3 kg C m−2, out of 17–18 kg C m−2) is significant compared to the amount present in the upper meter of soil (3–4 kg C m−2 out of 10–11 kg C m−2). A model of belowground carbon cycling derived from measurements of carbon stocks and fluxes, and constrained using carbon isotopes, is used to predict C fluxes associated with conversion of deep‐rooting forests to pasture and subsequent pasture management. The relative proportions and turnover times of active (including detrital plant material; 1–3 year turnover), slow (decadal and shorter turnover), and passive (centennial to millennial turnover) soil organic matter pools are determined by depth for the forest soil, using constraints from measurements of C stocks, fluxes, and isotopic content. Reduced carbon inputs to the soil in degraded pastures, which are less productive than the forests they replace, lead to a reduction in soil carbon inventory and Δ14C, in accord with observations. Managed pastures, which have been fertilized with phosphorous and planted with more productive grasses, show increases in C and 14C over forest values. Carbon inventory increases in the upper meter of managed pasture soils are partially offset by predicted carbon losses due to death and decomposition of fine forest roots at depths >1 m in the soil. The major adjustments in soil carbon inventory in response to land management changes occur within the first decade after conversion. Carbon isotopes are shown to be more sensitive indicators of recent accumulation or loss of soil organic matter than direct measurement of soil C inventories.
Global Biogeochemical Cycles – Wiley
Published: Dec 1, 1995
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.