Biomass data from Hess et al. 2020

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Biomass data from Hess et al. 2020

This datatable is part of the Annual Net Primary Production on the Main Cropping System Experiment dataset. Aboveground annual net primary production (ANPP) has been measured on the LTER main site since 1990 and on the successional and forested sites since 1993. ANPP is measured at peak biomass for a given treatment. In some systems with multiple harvests or complex communities that have peaks occurring at different times of the year, measurements are taken at multiple times per year. Additional ANPP measurements are made where appropriate using leaf litter traps, estimates of diameter from tree basal diameter and for the poplar treatment occasional destructive harvests. See the ANPP protocol for descriptions of the sampling and measurement methods for each of the treatments.


Experiment: Main Cropping System Experiment (MCSE)
Data available from: September 2015
Dataset: KBS019
Datatable ID: KBS019-024.93
Core Areas Primary Production
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Last Updated 2020-11-13
Variate Description Units
sample date date of biomass sampling
treatment MCSE treatment
replicate block nested in treatment
rainfall treatment rainfall manipulation
biomass biomass measurement kg/ha
yield yield measurement kg/ha
harvest index
stover n percentage nitrogen percentage in stover %
grain n percentage nitrogen percentage in grain %
grain n kg ha grain nitrogen weight in kg per hectare kg/ha
stover n kg ha stover nitrogen weight in kg per hectare kg/ha
biomass n kg ha biomass nitrogen weight in kg per hectare kg/ha

Data Excerpt

sample_date treatment replicate rainfall_treatment biomass yield harvest_index stover_n_percentage grain_n_percentage stover_n_kg_ha grain_n_kg_ha biomass_n_kg_ha
2015-09-29 t1 r1 control 6682.41 4050.0 0.606069 0.65085 5.70015 17.133 230.856 247.989
2015-09-29 t1 r1 extreme 6218.06 3341.55 0.537394 0.71745 5.73805 20.6375 191.74 212.377
2015-09-29 t1 r2 control 5554.41 3389.4 0.610218 0.63775 5.66445 13.8074 191.991 205.798
2015-09-29 t1 r2 extreme 7862.26 4380.0 0.557092 0.56285 5.68075 19.5999 248.817 268.417
2015-09-29 t1 r3 control 7852.96 4291.5 0.546482 0.7416 5.5084 26.4118 236.393 262.805
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