Nitrogen and phosphorus allocation in leaves, twigs, and fine roots across 49 temperate, subtropical and tropical tree species: a hierarchical pattern

By An-Yi Li, Dali Guo, Zheng-quan Wang, Hongyan Liu. 2010

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Variation of first‐order root traits across climatic gradients and evolutionary trends in geological time (2013, unknown): “Root [N] of first-order roots is mainly in cortical tissues because xylem is composed mainly of nutrient-poor cells (Li et al., 2010).”
Coordinated pattern of multi-element variability in leaves and roots across Chinese forest biomes (2016, background): “Covariation in above- and below-ground functional and morphological traits has been widely observed (Reich et al., 2003; Craine et al., 2005; Newman & Hart, 2006; Niklas, 2006; Li et al., 2010; Liu et al., 2010; Geng et al., 2014; Yang et al., 2014).”
Nitrogen enrichment alters plant N: P stoichiometry and intensifies phosphorus limitation in a steppe ecosystem (2017, background): “This is because plants could allocate nutrients to meet the requirements of leaf photosynthesis in nutrient limiting environments, resulting in apparent inconsistencies in leaf and root N: P ratios (Aerts and Chapin, 2000; Li et al., 2010).”
Leaf, stem and root tissue strategies across 758 Neotropical tree species (2012, background): “More limited evidence from arctic, boreal, desert, temperate and tropical ecosystems shows coordination among leaf, stem and both fine and coarse root chemical traits, suggesting a whole-plant economics spectrum (Kerkhoff et al. 2006; Freschet et al. 2010; Li et al. 2010), but these studies have foc”