They concluded that after a distinct belowground time-lag plant species richness is relevant for the performance and functions of soil microorganisms.
Thus, it is clear that the best time to harvest the belowground biomass of knotweed for stilbenes is the autumn (September).
It was observed that the soil organic carbon and microbial biomass carbon (MBC) significantly increased with re-vegetation age, with above ground biomass increasing by 23 times, and belowground biomass increased by 26 times during the period of study.
Abundant and rare exotic plant species were expected to show the same variable pattern as they have not had the same amount of time to interact with the belowground fungal communities and establish species-specific relationships in comparison to the natives.
One possibility is that weaker diversity stability relationships at the ecosystem level are due to the presence of soil compensatory mechanisms, such as inherited carbon pools from previous land management and time-lag responses of the belowground communities.
Growth responses (number of live leaves at the time of harvest, aboveground biomass and belowground biomass) were analysed using MANOVA followed by univariate analysis.
Up to 10 times more carbonates lie in veins belowground; but the subterranean veins were previously thought to be formed by processes unconnected to the atmosphere, and to be nearly as old as the 96-million-year-old rock itself.
Adair, E. C., Reich, P. B., Hobbie, S. E. & Knops, J. M. H. Interactive effects of time, CO2, N, and diversity on total belowground carbon allocation and ecosystem carbon storage in a grassland community.
As a result, total biomass was greater in the M treatment than in the C and E treatments (Fig. 6C; P = 0.0081), while the above- to belowground biomass ratio was about two times greater in the E treatment than in the C and M treatments (Fig. 6D; P = 0.0001).
In addition to accumulation of aboveground C in the tree layer, we estimated declines in belowground C in the understory layer over time.
