Nitrogen addition mediates the response of foliar stoichiometry to phosphorus addition: a meta-analysis

Ecological Processes

卷:10

Lin Liu¹  Changhui Peng²  Rui Yin³  Paul Kardol⁴  Sining Liu⁵  Han Li⁵  Lixia Wang⁵  Bo Tan⁵  Chengming You⁵  Zhenfeng Xu⁵  Yang Liu⁵  Li Zhang⁵ 

[1] College of Animal Science and Technology, Sichuan Agricultural University;

[2] Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal;

[3] Department of Community Ecology, Helmholtz-Centre for Environmental Research-UFZ;

[4] Department of Forest Ecology and Management, Swedish University of Agricultural Science;

[5] Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province and National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River and Rainy Area of West China Plantation Ecosystem Permanent Scientific Research Base, Institute of Ecology and Forestry, Sichuan Agricultural University;

关键词: Ecological stoichiometry;    Plant nutrient regime;    Nutrient resorption efficiency;    Soil N and P availability;    Global change;    Global synthesis;   

DOI  :  10.1186/s13717-021-00329-x

来源: DOAJ

【 摘 要 】

Abstract Background Changes in foliar nitrogen (N) and phosphorus (P) stoichiometry play important roles in predicting the effects of global change on ecosystem structure and function. However, there is substantial debate on the effects of P addition on foliar N and P stoichiometry, particularly under different levels of N addition. Thus, we conducted a global meta-analysis to investigate how N addition alters the effects of P addition on foliar N and P stoichiometry across different rates and durations of P addition and plant growth types based on more than 1150 observations. Results We found that P addition without N addition increased foliar N concentrations, whereas P addition with N addition had no effect. The positive effects of P addition on foliar P concentrations were greater without N addition than with N addition. Additionally, the effects of P addition on foliar N, P and N:P ratios varied with the rate and duration of P addition. In particular, short-term or low-dose P addition with and without N addition increased foliar N concentration, and the positive effects of short-term or low-dose P addition on foliar P concentrations were greater without N addition than with N addition. The responses of foliar N and P stoichiometry of evergreen plants to P addition were greater without N addition than with N addition. Moreover, regardless of N addition, soil P availability was more effective than P resorption efficiency in predicting the changes in foliar N and P stoichiometry in response to P addition. Conclusions Our results highlight that increasing N deposition might alter the response of foliar N and P stoichiometry to P addition and demonstrate the important effect of the experimental environment on the results. These results advance our understanding of the response of plant nutrient use efficiency to P addition with increasing N deposition.

【 授权许可】

Unknown