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biomass(4)
nitrogen(4)
soils(4)
absorption(2)
phosphorus(2)
sedimentation(2)
soil temperature(2)
terrestrial ecosystems(2)
agricultural lands(1)
carbon(1)
carbon dioxide(1)
conservation(1)
elements(1)
grasslands(1)
islands(1)
land surface(1)
methane(1)
microflora(1)
oxygen(1)
ph(1)
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