Patterns of plant carbon, nitrogen, and phosphorus concentration in relation to productivity in China’s terrestrial ecosystems

• DOI: 10.1073/pnas.1700295114
• Publication Date: 2018-04-17T15:00:47Z
• Authors: Zhiyao Tang; Wenting Xu; Guoyi Zhou; Yongfei Bai; Jiaxiang Li; Xuli Tang; Dima Chen; Qing Liu; Wenhong Ma; Gaoming Xiong; Honglin He; Nianpeng He; Yanpei Guo; Qiang Guo; Jiangling Zhu; Wenxuan Han; Huifeng Hu; Jingyun Fang; Zongqiang Xie
• Keywords: Terrestrial ecosystem; Terrestrial plant; Carbon fibers

Plant nitrogen (N) and phosphorus (P) content regulate productivity carbon (C) sequestration in terrestrial ecosystems. Estimates of the allocation N P plant tissues relationship between nutrient photosynthetic capacity are critical to predicting future ecosystem C under global change. In this study, by investigating concentrations leaves, stems, roots across China's biomes, we document large-scale patterns community-level C, N, P. We also examine possible correlation production as indicated vegetation gross primary (GPP). The nationally averaged community were 436.8, 14.14, 1.11 mg·g-1 for leaves; 448.3, 3.04 0.31 stems; 418.2, 4.85, 0.47 roots, respectively. leaf was 249.5 g GPP·g-1 N·y-1 3,157.9 P·y-1, stems generally more sensitive abiotic environment than those leaves. There strong power-law relationships (or P) different all which closely coupled with GPP. These findings not only provide key parameters develop empirical models scale responses plants change from a single tissue whole but offer evidence biome-dependent regulation nutrients.