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Titolo:
SIMULATING TRENDS IN SOIL ORGANIC-CARBON IN LONG-TERM EXPERIMENTS USING THE CENTURY MODEL
Autore:
KELLY RH; PARTON WJ; CROCKER GJ; GRACE PR; KLIR J; KORSCHENS M; POULTON PR; RICHTER DD;
Indirizzi:
COLORADO STATE UNIV,NAT RESOURCE ECOL LAB FT COLLINS CO 80523 COLORADO STATE UNIV,DEPT RANGELAND ECOSYST SCI FT COLLINS CO 00000 NSW AGR,TAMWORTH CTR CROP IMPROVEMENT TAMWORTH NSW 2340 AUSTRALIA CRC SOIL & LAND MANAGEMENT GLEN OSMOND SA 5064 AUSTRALIA RES INST CROP PROD CZ-16106 PRAGUE 6 RUZYNE CZECH REPUBLIC ENVIRONM RES CTR D-06246 BAD LAUCHSTADT GERMANY IACR ROTHAMSTED HARPENDEN AL5 2JQ HERTS ENGLAND DUKE UNIV,SCH ENVIRONM DURHAM NC 27708
Titolo Testata:
Geoderma
fascicolo: 1-2, volume: 81, anno: 1997,
pagine: 75 - 90
SICI:
0016-7061(1997)81:1-2<75:STISOI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOREST SOILS; NITROGEN; DYNAMICS; MATTER;
Keywords:
SOIL ORGANIC MATTER; CENTURY MODEL; LONG-TERM EXPERIMENTS; MODEL COMPARISON;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
R.H. Kelly et al., "SIMULATING TRENDS IN SOIL ORGANIC-CARBON IN LONG-TERM EXPERIMENTS USING THE CENTURY MODEL", Geoderma, 81(1-2), 1997, pp. 75-90

Abstract

This paper describes Century Soil Organic Matter (SOM) Model simulations of seven long-term data sets that are the subject of this special issue. We found that Century successfully simulates SOM C across a variety of land use and climate types. Simulations of SOM were most successful in grass and crop systems. This exercise highlights a structurallimitation of Century in simulating SOM in a forest with a developed litter layer. Simulations of tree biomass distributions, however, weregenerally successful. The model failed to capture extreme values of yield and N offtake, although annual averages were quite similar between observations and simulations, leading to reasonable estimates of SOMC. Average yields and SOM were generally higher in amended treatmentsor rotations including an N-fixing component such as alfalfa. The model successfully predicted SOM dynamics across climates, land use types, and treatments. This suggests that Century is a useful tool for ecosystem studies, particularly those focused on SOM dynamics. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 13:33:24