Phosphorus storage and allocation in vegetation on the Tibetan Plateau. (December 2022)

• Record Type: Journal Article
• Authors: Yu, Cong; Xu, Li; Li, Mingxu; He, Nianpeng
• Is Part Of: Ecological indicators. Volume 145(2023)
• Publication Date: 2022-12
• Subjects: TP Tibetan Plateau -- P storage The total mass of phosphorus stored in a given area (Tg) -- P content Phosphorus contents (g kg−1) -- P density Phosphorus storage per unit area (g m−2) -- Pleaf Leaf phosphorus contents (g kg−1) -- Pbranch Branch phosphorus contents (g kg−1) -- Ptrunk Trunk phosphorus contents (g kg−1) -- Proot Root phosphorus contents (g kg−1) -- PAGB Density Aboveground biomass P density (g m−2) -- PBGB Density Belowground biomass P density (g m−2) -- PTB Density Total biomass P density (g m−2) -- PAGB/BGB The ratio of aboveground biomass P density and belowground biomass P density -- Min Minimum -- Max Maximum -- SD Standard deviation -- ANOVA One-way analysis of variance -- SEM Structural equation model -- SP Total phosphorus content in soil (g kg−1) -- MAT Annual mean temperature (°C) -- TAR Temperature annual range (°C) -- MAP Annual precipitation (mm) -- TSRGS Total radiation during the growing season (mol m−2d–1) -- SRGS Solar radiation during the growing season (KJ m−2 d–1) -- WVPGS Water vapor pressure during the growing season (Kpa) -- NDVI Normalized difference vegetation index; Tibetan Plateau -- Vegetation -- Phosphorus content -- Phosphorus storage -- Influencing factors; Environmental monitoring -- Periodicals; Environmental management -- Periodicals; Environmental impact analysis -- Periodicals; Environmental risk assessment -- Periodicals; Sustainable development -- Periodicals; 333.71405
• DOI: 10.1016/j.ecolind.2022.109636
• Languages: English
• ISSNs: 1470-160X

Abstract

Graphical abstract: Highlights: Phosphorus (P) of 2, 040 plant communities on the Tibetan Plateau were measured. Active organs (e.g., leaves) had higher P contents but lower P densities. Radiation dominated P storage and allocation in vegetation on the Tibetan Plateau. Tibetan Plateau vegetation stored approximately 3.64 Tg of P. Abstract: Phosphorus (P) is critical for vegetation growth and ecosystem productivity. P distribution and allocation patterns of plants in natural communities are associated with their resource allocation strategies. However, owing to the lack of systematic research, the spatial variations of vegetation P on the Tibetan Plateau (TP) remain unclear. Based on the 0.5° standardized spatial grid sampling method and survey data obtained from plant organs (leaf, branch, trunk, and root) in 2, 040 plant communities, we analyzed the distribution of vegetation P contents (g kg −1 ) and densities (g P m −2 ) on the TP. The results indicate that the vegetation P contents and densities differed significantly among the plant organs on the TP. Active organs contained higher P contents but lower P densities. Radiation dominated vegetation P storage and allocation on the TP. Strong radiation had a negative effect on vegetation P accumulation and caused more P to be allocated to the underground parts. The TP vegetation stored approximately 3.64 Tg of P, of which approximately 1.68, 1.28, 0.68, and 0.01 Tg of P were stored in forests, shrublands, grasslands, and deserts, respectively. Based on a large survey dataset, we determined the spatial distributions of vegetation P and constructed a P density distribution map for TP vegetation, which can be used for ecosystem modeling.