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Response of Plant and Soil N, P, and N:P Stoichiometry to N Addition in China: A Meta-Analysis

Authors :
Shuifei Chen
Wenwen Zhang
Xiaomin Ge
Xiao Zheng
Xu Zhou
Hui Ding
Aiguo Zhang
Source :
Plants, Vol 12, Iss 11, p 2104 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Nitrogen (N) and phosphorus (P) are key elements essential for plant growth and development. Due to fertilizer application, rapid urbanization, and fossil fuel combustion, nitrogen deposition has reached relatively high levels in China. However, there is still uncertainty regarding the response of N:P stoichiometry in plants and soil to N deposition across different ecosystems. Therefore, a meta-analysis was conducted using 845 observations from 75 studies to evaluate the response of plant and soil N and P concentrations and N to P ratios across various ecosystems to N addition. The analysis revealed that N concentration and N:P stoichiometry in plants and soil increased under N addition, while P concentration in plants and soil decreased on average. Furthermore, the magnitude of these responses was related to the N input rate and experimental duration. Finally, the effects of N addition on N concentration, P concentration, and N:P in terrestrial ecosystems would alter their allocation patterns, depending on relevant climate factors such as mean annual temperature and mean annual precipitation. This study highlights the ecological impact of N addition on the biogeochemical cycling of major elements (N and P) in terrestrial ecosystems in China. These findings are necessary for improving our understanding of the characteristics of plant ecological stoichiometry and helping to plan measures for increasing N deposition.

Details

Language :
English
ISSN :
22237747
Volume :
12
Issue :
11
Database :
Directory of Open Access Journals
Journal :
Plants
Publication Type :
Academic Journal
Accession number :
edsdoj.7665e12bdfdf4bcbbfb67b7de47cb13e
Document Type :
article
Full Text :
https://doi.org/10.3390/plants12112104