A flexible tool for simulation of soil carbon turnover

摘要: Abstract Existing models of soil organic matter (SOM) turnover are implemented within rigid and often complex modelling environments, which makes the testing influence SOM model structure a rather difficult task. A new carbon simulation tool is presented ( c-tool v. 1.0). It facilitates construction wide range user-definable based on linked pools decay described for each pool by first order kinetics. Simulation isotopes 13C 14C facilitated. No programming necessary defining or redefining models, as given in set-up files. The program fast, can utilise time-steps, enhances computation steady level contents. ability to mimic analyse an existing was tested using daisy SOM-model example. found that both reduction vertically layered one layer, exclusion C/N interactions only had small effects simulated development content during 30-year period. This suggests vertical layering may initially be ignored when constructing calibrating turnover, reduces complexity input demands considerably. two soils management types. An analysis model's sensitivity variation carbon-input key parameters performed, isotope tagging demonstrated powerful method analysing flows.