114 site study.
- Grazing increased plant diversity
- Grazing increased introduced species in higher rainfall (>350mm May – Sept) areas
- Grazing increased aboveground biomass productivity in high rainfall areas, decreased it in lower rainfall areas.
- Grazing saw no change in SOC in the 6 study regions.
- Grazing increased root growth in the top 30cm of soil in high rainfall areas.
- Grazing increased decomposition of plant litter in high rainfall areas.
- Grazing lowers CO2/N20 flux.
- Rotational grazing (High intensity, low frequency) significantly lowered CH4 production.
- Native grasslands store most carbon.
Conclusion: Rotational grazing native grasslands in high rainfall areas FTW.
- Perennial grasslands produce higher below ground biomass than above
- Cultivation leads to a rapid loss 30-60% of soil C
- Continuous wheat cropping led to 19% loss of C
- Cropping saw 30-40% C loss after 5 years.
- Silvopasture (perennial pasture system) produced least CO2
- Naturally re-vegetated areas failed to recover even after 50 years.
Conclusion: Silvopasture intercropping FTW.
Basically what Colin Seis does with Pasture Cropping native grasses.