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globalchange

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soils(139)
carbon(118)
soil moisture(64)
organic carbon(58)
forests(57)
nitrogen(55)
erosion(54)
vegetation(54)
soil chemistry(47)
fertilizers(43)
carbon dioxide(40)
organic matter(37)
precipitation(37)
soil respiration(36)
biomass(34)
loess(31)
agriculture(29)
conservation(29)
grasslands(27)
surface water(25)
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