<style face="normal" font="default" size="100%">Effects of nitrogen saturation on tree growth and death in a mixed-oak forest</style>

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<style face="normal" font="default" size="100%">Effects of nitrogen saturation on tree growth and death in a mixed-oak forest</style>

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13

<style face="normal" font="default" size="100%">Effects of nitrogen addition on fine roots in an oak forest</style>