Soil carbon turnover in a recovering temperate forest

Global Biogeochemical Cycles - Tập 9 Số 4 - Trang 449-454 - 1995
Kevin G. Harrison, W. M. Post, Daniel D. Richter

Tóm tắt

Soil radiocarbon measurements show that mineral soil carbon under a recovering temperate forest in South Carolina turns over twice as fast as carbon in undisturbed soil. The observed 12‐year turnover time influences the design and interpretation of CO2 fertilization experiments. Experiments conducted on formerly disturbed sites will show a soil carbon fertilization response considerably faster than experiments conducted on native sites. Calculating the soil carbon CO2 fertilization factor from observed increases in soil carbon requires values for the turnover time and inventory of active soil carbon. We also use the observed turnover time to estimate the rate of atmospheric carbon dioxide sequestration in soil following agricultural abandonment. Although using the observed turnover rate increases estimates of soil carbon uptake on abandoned land, the amount of carbon sequestered globally is minimal because the net area of land being abandoned is small.

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Tài liệu tham khảo

10.1002/jpln.19881510109

Becker‐Heidmann P. Tiefenfunktionen der natürlichen kohlenstoff‐isotopengehlalte von vollständig dünnschichtweise beprobten parabraunerden und ihre relation zur dynamik der organischen substanz in diesen boden Ph. D. Thesis Hamburg Univ. Hamburg 1989.

10.1007/BF02180166

10.1016/0378-1127(91)90242-N

10.1007/BF00000786

DeBell D. S., 1989, Stockability: A major factor in productivity differences between Pinus taeda plantations in Hawaii and the southeastern United States, For. Sci., 35, 708

Gebhart G. L., 1994, CRP increases soil organic carbon, J. Soil Water Conserv., 49, 488

10.1097/00010694-197706000-00007

10.4141/cjss95-023

Harms W. R., 1981, Stand structure and yield relationship in a 20‐year‐old loblolly pine spacing study, Southern J. of Appl. For., 5, 162, 10.1093/sjaf/5.3.162

Harrison K. G., 1995, The Carbon Cycle

10.1126/science.262.5134.725

10.1029/92GB02938

10.2307/1942531

Houghton R. A. D. L.Skole Long‐term flux of carbon between terrestrial ecosystems and the atmosphere as a result of changes in land useCarbon Dioxide Info. Anal. Cent. Oak RidgeJuly 1990.

10.2136/sssaj1992.03615995005600020020x

10.1098/rstb.1990.0177

10.1111/j.1365-2389.1994.tb00498.x

Johnson M. G. J. S.Kern Sequestering carbon in soilsA workshop to explore the potential for mitigating global climate change Corvallis OregonEnviron. Res. Lab.Corvallis Oreg.26–28 February 1990.

10.1017/S0033822200010286

10.1016/0168-1923(94)90049-3

10.2136/sssaj1974.03615995003800030033x

Matthews E., 1984, Global inventory of pre‐agricultural and present biomass, Prog. in Biometeorol., 3, 237

Metz L. J. J. E.Douglass Soil moisture depletion under several Piedmont types USDA Tech. Bull. 1207 U. S. Dep. Agric. Washington D. C. 1959.

10.1038/357322a0

10.1007/BF02180317

10.1016/0038-0717(84)90100-7

10.1016/0038-0717(78)90028-7

10.1029/93GB02042

Post W. M., 1990, Soils and the Greenhouse Effect, 401

Richter D. D., 1995, NATO Advanced Science Institute Series: Evaluation of soil organic matter models using existing, long‐term datasets

10.2307/1937469

Richter D. D., 1995, Eighth North American Forest Soils Conference, 233

10.1017/S0033822200012224

10.1139/x89-010

10.1029/94GB00993

Schlesinger W. H., 1991, Biogeochemistry: An Analysis of Global Change

10.1007/978-1-4757-1915-4_11

10.1111/j.1600-0889.1987.tb00278.x

Trumbore S. E. Carbon cycling and gas exchange in soils Ph. D. Thesis Columbia Univ. New York 1988.

10.1029/93GB00468

10.1002/jpln.19881510204

Vogel J. C., 1970, Carbon‐14 dating of groundwater, Isotope Hydrology, 129, 224

Wells C. G., 1975, Forest Soils and Forest Land Management, Fourth North American Forest Soils Conference, 137

Zahner R. Refinements in empirical function for realistic soil‐moisture regimes under forest cover National Science Foundation Advanced Seminar ProceedingW. E.Sopper H. E.Lull 261–274Pergamon Tarrytown New York 1967.