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Titolo:
SIMULATING TRENDS IN SOIL ORGANIC-CARBON IN LONG-TERM EXPERIMENTS USING ROTHC-26.3
Autore:
COLEMAN K; JENKINSON DS; CROCKER GJ; GRACE PR; KLIR J; KORSCHENS M; POULTON PR; RICHTER DD;
Indirizzi:
IACR ROTHAMSTED,DEPT SOIL SCI HARPENDEN AL5 2JQ HERTS ENGLAND IACR ROTHAMSTED,CROP & DIS MANAGEMENT DEPT HARPENDEN AL5 2JQ HERTS ENGLAND NSW AGR,TAMWORTH CTR CROP IMPROVEMENT TAMWORTH NSW 2340 AUSTRALIA COOPERAT RES CTR SOIL & LAND MANAGEMENT GLEN OSMOND SA 5064 AUSTRALIA RES INST CROP PROD CZ-16106 PRAGUE 6 RUZYNE CZECH REPUBLIC CTR ENVIRONM RES LTD D-06246 BAD LAUCHSTADT GERMANY DUKE UNIV,SCH ENVIRONM DURHAM NC 27708 DUKE UNIV,FOREST RESOURCES CTR DURHAM NC 27708
Titolo Testata:
Geoderma
fascicolo: 1-2, volume: 81, anno: 1997,
pagine: 29 - 44
SICI:
0016-7061(1997)81:1-2<29:STISOI>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Keywords:
SOIL ORGANIC CARBON; SOIL ORGANIC MATTER; SOIL ORGANIC MATTER MODELS; MODEL EVALUATION; ROTHC-26.3;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
K. Coleman et al., "SIMULATING TRENDS IN SOIL ORGANIC-CARBON IN LONG-TERM EXPERIMENTS USING ROTHC-26.3", Geoderma, 81(1-2), 1997, pp. 29-44

Abstract

As part of a model evaluation exercise, RothC-26.3, a model for the turnover of organic carbon in non-waterlogged soils, was fitted to measurements of organic carbon from 18 different experimental treatments on 6 long-term experimental sites in Germany, England, the USA, the Czech Republic and Australia. In the fitting process, the model was firstrun with an annual return of plant C that had been selected iteratively to give the carbon content of the soil at the start of each experiment. This was done for the soil and climate of each site. If the radiocarbon content of the soil organic matter was known, the inert organiccarbon (IOM) content of the soil was also calculated for the start ofthe experiment. Using these carbon and radiocarbon contents as a starting point, the model was then run for each of the experimental treatments to be fitted, using iteratively selected values for the annual return of plant materials to the soil. The value used for each treatmentwas selected to optimise the fit between modelled and measured data over the whole experimental period: fitting was done by eye. Thus fitted, RothC-26.3 gave an acceptable approximation to the measurements for14 of the treatments, hearing in mind the experimental errors in measuring soil organic carbon on a per hectare ba is. With four of the treatments (Highfield Bare Fellow, Park Grass plot 13d. Ruzyne farmyard manure plot and Tamworth rotation 5), the fit was less satisfactory. (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 12:09:00