DOI: 10.5061/dryad.4f4qrfjqz
title: Data from: Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants

description: The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect
 plant nutrient absorption and dynamic allocation. They can be regulated by
 global change factors (e.g., climate warming, nitrogen enrichment, and
 altered precipitation). Yet, how multiple global change factors act
 interactively to influence the stoichiometric characteristics of N and P
 and their scaling relationships in different plant organs remains poorly
 understood. In a field experiment with treatments of nitrogen addition
 (Nadd), warming (W), and reduced precipitation (Pr) in an alpine meadow,
 we examined how global change factors interact to alter N and P
 stoichiometric characteristics of leaves and seeds. An allometry model
 (i.e., N = βPα) was employed to detect changes in the scaling of plant N
 to P under different treatments. Our results showed that nitrogen addition
 significantly increased leaf N concentration (+44.0 %), seed N
 concentration (+16.9 %) and leaf N : P ratios (+27.8 %) under ambient
 temperatures and significantly increased leaf N concentration (+53.7 %)
 and leaf N : P ratios (+46.4 %) under ambient precipitation. Importantly,
 nitrogen addition and warming/reduced precipitation had synergistic
 effects on P concentration of leaves and seeds, and antagonistic effects
 on N : P ratios of leaves. Moreover, although none of the three global
 change factors individually altered the scaling of N to P, nitrogen
 addition interacted with warming or with reduced precipitation to decrease
 the scaling exponents in leaves and increased them in seeds. Our results
 suggest that multiple global change factors can alter the N and P
 allocation patterns and result in a decoupling of N and P in different
 plant organs. These findings highlight the importance of considering
 interactions of multiple factors when predicting dynamic changes in plant
 stoichiometric characteristics and nutrient utilization strategies under
 global change scenarios.
description: # Multiple global change factors alter the scaling of nitrogen to
 phosphorus in alpine plants GENERAL INFORMATION 1. Title of Dataset: Data
 from: Multiple global change factors alter the scaling of nitrogen to
 phosphorus in alpine plants 2. Author Information Co-investigator 1 Name:
 Jiapu Li Institution: College of Resources and Environmental Sciences,
 Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
 Co-investigator 2 Name: Xuebin Yan Institution: College of Resources and
 Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu
 210095, China Co-investigator 3 Name: Pinwei Zhang Institution: College of
 Resources and Environmental Sciences, Nanjing Agricultural University,
 Nanjing, Jiangsu 210095, China Co-investigator 4 Name: Zhonghui Zhuo
 Institution: College of Resources and Environmental Sciences, Nanjing
 Agricultural University, Nanjing, Jiangsu 210095, China Co-investigator 5
 Name: Xiaoyi Wang Institution: College of Resources and Environmental
 Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
 Co-investigator 6 Name: Kailing Huang Institution: College of Resources
 and Environmental Sciences, Nanjing Agricultural University, Nanjing,
 Jiangsu 210095, China Co-investigator 7 Name: Peng Wang Institution:
 College of Resources and Environmental Sciences, Nanjing Agricultural
 University, Nanjing, Jiangsu 210095, China Co-investigator 8 Name: Xianhui
 Zhou Institution: State Key Laboratory of Herbage Improvement and
 Grassland Agro-ecosystems, College of Ecology, Lanzhou University,
 Lanzhou, Gansu 730000, China Co-investigator 9 Name: Miaojun Ma
 Institution: State Key Laboratory of Herbage Improvement and Grassland
 Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu
 730000, China Corresponding Investigator Name: Yanwen Zhao Institution:
 College of Resources and Environmental Sciences, Nanjing Agricultural
 University, Nanjing, Jiangsu 210095, China Email:
 [ywzhao@njau.edu.cn](mailto:ywzhao@njau.edu.cn) Corresponding Investigator
 Name: Hui Guo Institution: College of Resources and Environmental
 Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
 Email: [hui.guo@njau.edu.cn](mailto:hui.guo@njau.edu.cn) 3. Date of data
 collection: 2022 4. Geographic location of data collection: at the eastern
 Tibetan Plateau (33°38′N, 101°53′E) of Maqu county, Gansu Province, China
 5. Recommended citation for this dataset: Li, Jiapu et al. (2025), Data
 from: Multiple global change factors alter the scaling of nitrogen to
 phosphorus in alpine plants, Dryad, Dataset. #### DATA OVERVIEW
 **Description of dataset:** These data were about plant nutrient
 concentrations and soil properties data under nitrogen addition, warming
 and reduced precipitation treatments. DATA-SPECIFIC INFORMATION FOR:
 **Li_et_al_FE_data.csv** * Number of cases/rows: 384 and variables are as
 follows: - Plot: ID of 32 treatment plots * Treatment: treatments of 32
 plots; CK-control, N-nitrogen addition, W-warming, Pr-reduced
 precipitation, NW-combination of nitrogen addition and warming,
 NPr-combination of nitrogen addition and reduced precipitation,
 NWPr-combination of nitrogen addition, warming, and reduced precipitation
 - Nitrogen_addition: whether this plot was treated with nitrogen addition;
 no-no nitrogen was added, yes-nitrogen was added * Warming: whether this
 plot was treated with warming, no-no warming, or yes warming -
 Nitrogen_addition: whether this plot was treated with reduced
 precipitation; no-no reduced precipitation, yes-reduced precipitation *
 Block: the experiment is a randomized block design and there are 4
 blocks/replications. - Species: name of the species that we studied in
 this experiment * Organ: the organs of a plant that we studied in this
 experiment - Nitrogen(mg g-1): plant nitrogen concentration in each plot *
 Phosphorus(mg g-1): plant phosphorus concentration in each plot -
 N:P_ratios: plant nitrogen and phosphorus ratios in each plot *
 Soil_available_nitrogen(mg kg-1): soil available nitrogen concentration in
 each plot - Soil_available_phosphorus(mg kg-1): soil available phosphorus
 concentration in each plot * Soil_available_N:P_ratios: soil available
 nitrogen and phosphorus ratios in each plot - Soil_pH: soil pH value in
 each plot * Missing data codes: 'null' represent missing values,
 cause by varied plant diversity across sampling plots resulted in no plant
 material available for collection in those specific areas * Abbreviations
 used: CK: control; N: nitrogen; W: warming; Pr: reduced precipitation; P:
 phosphorus * Other relevant information: None of the species included in
 the dataset are considered vulnerable or endangered.