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Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands
INTRODUCTION: Over the past three decades, the view of nutrient limitation has transferred from single-nutrient limitation to multiple-nutrient limitation. On the Qinghai-Tibetan Plateau (QTP), many nitrogen (N) and phosphorus (P) addition experiments have revealed different N- or P-limited patterns...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9975565/ https://www.ncbi.nlm.nih.gov/pubmed/36875596 http://dx.doi.org/10.3389/fpls.2023.1140462 |
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author | Dong, Kai Li, Wenjin Tang, Yulong Ma, Suhui Jiang, Mengluan |
author_facet | Dong, Kai Li, Wenjin Tang, Yulong Ma, Suhui Jiang, Mengluan |
author_sort | Dong, Kai |
collection | PubMed |
description | INTRODUCTION: Over the past three decades, the view of nutrient limitation has transferred from single-nutrient limitation to multiple-nutrient limitation. On the Qinghai-Tibetan Plateau (QTP), many nitrogen (N) and phosphorus (P) addition experiments have revealed different N- or P-limited patterns at many alpine grassland sites, whereas it is not clear what the general patterns of N and P limitation across the QTP grasslands. METHODS: We performed a meta-analysis, containing 107 publications, to assess how N and P constrained plant biomass and diversity in alpine grasslands across the QTP. We also tested how mean annual precipitation (MAP) and mean annual temperature (MAT) influence N and P limitations. RESULTS: The findings show that plant biomass in QTP grasslands is co-limited by N and P. Single N limitation is stronger than single P limitation, and the combined positive effect of N and P addition is stronger than that of single nutrient additions. The response of biomass to N fertilization rate shows an increase firstly and then declines, and peaks at approximately 25 g N·m(-2)·year(-1). MAP promotes the effect of N limitation on plant aboveground biomass and diminishes the effect of N limitation on belowground biomass. Meanwhile, N and P addition generally decline plant diversity. Moreover, the negative response of plant diversity to N and P co-addition is strongest than that of single nutrient additions. DISCUSSION: Our results highlight that N and P co-limitation is more prevalent than N- or P-limitation alone in alpine grasslands on the QTP. Our findings provide a better understanding of nutrient limitation and management for alpine grasslands on the QTP. |
format | Online Article Text |
id | pubmed-9975565 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-99755652023-03-02 Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands Dong, Kai Li, Wenjin Tang, Yulong Ma, Suhui Jiang, Mengluan Front Plant Sci Plant Science INTRODUCTION: Over the past three decades, the view of nutrient limitation has transferred from single-nutrient limitation to multiple-nutrient limitation. On the Qinghai-Tibetan Plateau (QTP), many nitrogen (N) and phosphorus (P) addition experiments have revealed different N- or P-limited patterns at many alpine grassland sites, whereas it is not clear what the general patterns of N and P limitation across the QTP grasslands. METHODS: We performed a meta-analysis, containing 107 publications, to assess how N and P constrained plant biomass and diversity in alpine grasslands across the QTP. We also tested how mean annual precipitation (MAP) and mean annual temperature (MAT) influence N and P limitations. RESULTS: The findings show that plant biomass in QTP grasslands is co-limited by N and P. Single N limitation is stronger than single P limitation, and the combined positive effect of N and P addition is stronger than that of single nutrient additions. The response of biomass to N fertilization rate shows an increase firstly and then declines, and peaks at approximately 25 g N·m(-2)·year(-1). MAP promotes the effect of N limitation on plant aboveground biomass and diminishes the effect of N limitation on belowground biomass. Meanwhile, N and P addition generally decline plant diversity. Moreover, the negative response of plant diversity to N and P co-addition is strongest than that of single nutrient additions. DISCUSSION: Our results highlight that N and P co-limitation is more prevalent than N- or P-limitation alone in alpine grasslands on the QTP. Our findings provide a better understanding of nutrient limitation and management for alpine grasslands on the QTP. Frontiers Media S.A. 2023-02-15 /pmc/articles/PMC9975565/ /pubmed/36875596 http://dx.doi.org/10.3389/fpls.2023.1140462 Text en Copyright © 2023 Dong, Li, Tang, Ma and Jiang https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Dong, Kai Li, Wenjin Tang, Yulong Ma, Suhui Jiang, Mengluan Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title | Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title_full | Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title_fullStr | Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title_full_unstemmed | Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title_short | Co-limitation of N and P is more prevalent in the Qinghai-Tibetan Plateau grasslands |
title_sort | co-limitation of n and p is more prevalent in the qinghai-tibetan plateau grasslands |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9975565/ https://www.ncbi.nlm.nih.gov/pubmed/36875596 http://dx.doi.org/10.3389/fpls.2023.1140462 |
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