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Ecological Processes
Fig. 6 | Ecological Processes

Fig. 6

From: Nitrogen use efficiency of terrestrial plants in China: geographic patterns, evolution, and determinants

Fig. 6

Conceptual diagram of the influence of P, phylogeny, climate factors, and soil properties on NUE. This mechanism emphasizes the important effects of plant phosphorus content and evolutionary history that reflects the long history of environmental nitrogen supplies due to continuous weathering during evolution. a Refers to low nitrogen conditions at the onset of evolution, and b–d refers to an ample nitrogen environment under different phosphorus conditions

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