Abstract:Background: Despite the importance of microorganisms in soil nitrogen (N) cycling, studies on spatial patterns of microbial N genes in the temperate grassland are still lacking, whose productivity is limited by N. Here, we investigated microbial N genes from 60 temperate grassland sites across 1 161 km in Inner Mongolia, China.Results: All N gene abundances tended to decrease from northeast to southwest, consistent with precipitation change but contrary to temperature trend. Most N gene abundances increased wi… Show more
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