排序方式: 共有1条查询结果,搜索用时 62 毫秒
1
1.
Drouet JL Capian N Fiorelli JL Blanfort V Capitaine M Duretz S Gabrielle B Martin R Lardy R Cellier P Soussana JF 《Environmental pollution (Barking, Essex : 1987)》2011,159(11):3156-3161
Modelling complex systems such as farms often requires quantification of a large number of input factors. Sensitivity analyses are useful to reduce the number of input factors that are required to be measured or estimated accurately. Three methods of sensitivity analysis (the Morris method, the rank regression and correlation method and the Extended Fourier Amplitude Sensitivity Test method) were compared in the case of the CERES-EGC model applied to crops of a dairy farm. The qualitative Morris method provided a screening of the input factors. The two other quantitative methods were used to investigate more thoroughly the effects of input factors on output variables. Despite differences in terms of concepts and assumptions, the three methods provided similar results. Among the 44 factors under study, N2O emissions were mainly sensitive to the fraction of N2O emitted during denitrification, the maximum rate of nitrification, the soil bulk density and the cropland area. 相似文献
1