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Global change progressively increases foliar nitrogen–phosphorus ratios in China's subtropical forests
Dryad
08/07/2023
Abstract
Foliar nitrogen (N) to phosphorus (P) ratios (N/P) indicate N versus P limitation in terrestrial ecosystems. Quantifying the long-term dynamics of foliar N/P and their potential drivers is crucial for predicting nutrient status in forest ecosystems under global change. Using 1811 herbarium specimens collected during 1920-2010 in subtropical forests of China, we detected significant increases in foliar N/P (21.2%) and decreases in foliar P concentrations (23.1%). Foliar N/P increased more in evergreen species (22.9%) than in deciduous species (16.9%). Changes in atmospheric CO2 concentrations (Pco2), N deposition and mean annual temperature (MAT) dominantly contributed to the increased foliar N/P of evergreen species, while Pco2, MAT, and vapor pressure deficit, to that of deciduous species. Under future Shared Socioeconomic Pathway scenarios, increasing MAT would continuously increase foliar N/P by more than 6.5-26.0%. The results suggest that global change progressively and non-uniformly aggravates the N-P imbalance of plant species in subtropical forests.
Details
- Title
- Global change progressively increases foliar nitrogen–phosphorus ratios in China's subtropical forests
- Resource Type
- Dataset
- Publisher
- Dryad
- Grant note
- 2022B1111230001 / Special Project for Research and Development in Key areas of Guangdong Province (https://doi.org/10.13039/501100015956) 41771522 / National Natural Science Foundation of China (https://ror.org/01h0zpd94)
- Copyright
- Public Domain
- Identifiers
- 99381612197206600
- Academic Unit
- Earth and Environmental Sciences; Hal Marcus College of Science and Engineering
- Language
- English