The
contribution of roots to the annual CO2 emission from gray forest
and soddy podzolic soils measured in the
field experiments under crops and native vegetation varied in the wide range
from 10 to 58% of CO2 emission from the soil by mean value of 33%.
The contribution of roots to the CO2 emission from soil surface
calculated for growth season for all the ecosystems studied was equal to 44%.
In agroecosystems the contribution of roots was strongly related to the length
of crops growth. CO2 emission during dormant periods of the year was
greatly controlled by the decomposition of surface litter and detritus in the
soil than by respiration of roots and soil microorganisms.
Author: A. Larionova, V. Lopes de Gerenju, D.Sapronov, I. Yevdokimov (ilya at issp dot serpukhov dot su)
Filesize: 35.02 Kb
