ArticleBiology2026
Stoichiometric Characteristics of Carbon, Nitrogen, and Phosphorous and Allometric Nitrogen-Phosphorous Relationships During the Organ-to-Forest Floor Material Transformation in Representative Forest Tree Species on the Southern Slope of the Qilian Mountains.
Article in Biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The ecological stoichiometric traits of forest floor material nutrient resorption in forest ecosystems. However, systematic insights into nutrient allocation and scaling during the transformation of plant organs to forest floor material remain limited. This study examined six representative tree species on the southern slope of the Qilian Mountains, quantifying the carbon (C), nitrogen (N), and phosphorus (P) contents and their stoichiometric characteristics in leaves, branches, and mixed forest floor material. Allometric relationships between N and P were analyzed using the standardized major axis regression. Coniferous species exhibited a conservative strategy with high C/N and C/P ratios, whereas broad-leaved species and mixed forests exhibited nutrient-enrichment strategies. During the organ-to-forest floor material transformation, N and P contents significantly reduced, whereas C/N and C/P ratios increased, indicating strong nutrient resorption. N and P were positively associated with plant organs and forest floor material, with isometric relationships (b = 1.06 and 0.98 for plant organs and forest floor material, respectively). Because the slopes did not differ significantly from 1 (
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