Small example dataset of target observations (leaf trait data) to optimize
model parameters with the function calib_sofun
p_model_validation_vcmax25Format
A tibble of validation data:
- sitename
A character string containing the site names (e.g. 'Reichetal_Colorado').
- data
A tibble [ 1 x 2 ] with observations for the following variables:
- vcmax25
The observed maximum rate of carboxylation (Vcmax), normalised to 25\(^o\) C (in mol C m\(^{-2}\) d\(^{-1}\)), aggregated over different plant species in each site.
- vcmax25_unc
The uncertainty of the Vcmax25 (in mol C m\(^{-2}\) d\(^{-1}\)), calculated as the standard deviation among Vcmax25 observations for several species per site or as the total standard deviation across sites for single-plant-species sites.
Source
Atkin, O. K., Bloomfield, K. J., Reich, P. B., Tjoelker, M. G., Asner, G. P., Bonal, D., et al. (2015). Global variability in leaf respiration in relation to climate, plant functional types and leaf traits. New Phytol. 206 (2), 614–636. doi:10.1111/nph.13253
Examples
require(ggplot2); require(tidyr)
p_model_validation_vcmax25 %>% tidyr::unnest(data)
#> # A tibble: 4 × 3
#> # Groups: sitename [4]
#> sitename vcmax25 vcmax25_unc
#> <chr> <dbl> <dbl>
#> 1 Reichetal_Colorado 0.0000339 0.0000136
#> 2 Reichetal_New_Mexico 0.0000757 0.0000163
#> 3 Reichetal_Venezuela 0.0000472 0.0000164
#> 4 Reichetal_Wisconsin 0.0000502 0.0000147