Differences in background environment and fertilization method mediate plant response to nitrogen fertilization in alpine grasslands on the Qinghai-Tibetan Plateau.

Ecosystem Grassland Tibet Nitrogen / analysis Plants / metabolism Poaceae / physiology Soil Fertilization
Biomass Machine learning Plant productivity Restoration Threshold

Journal

The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500

Informations de publication

Date de publication:
01 Jan 2024
Historique:
received: 27 03 2023
revised: 20 07 2023
accepted: 20 09 2023
medline: 15 11 2023
pubmed: 30 9 2023
entrez: 29 9 2023
Statut: ppublish

Résumé

Grassland degradation threatens ecosystem function and livestock production, partly induced by soil nutrient deficiency due to the lack of nutrient return to soils, which is largely ascribed to the intense grazing activities. Therefore, nitrogen (N) fertilization has been widely adopted to restore degraded Qinghai-Tibetan Plateau (QTP) grasslands. Despite numerous field manipulation studies investigating its effects on alpine grasslands, the patterns and thresholds of plant response to N fertilization remain unclear, thus hindering the prediction of its influences on the regional scale. Here, we established a random forest model to predict N fertilization effects on plant productivity based on a meta-analysis synthesizing 88 publications in QTP grasslands. Our results showed that N fertilization increased the aboveground biomass (AGB) by 46.51 %, varying wildly among plant functional groups. The positive fertilization effects intensified when the N fertilization rate increased to 272 kg ha

Identifiants

DOI: 10.1016/j.scitotenv.2023.167272 PMID: 37774870
pubmed: 37774870
pii: S0048-9697(23)05899-0
doi: 10.1016/j.scitotenv.2023.167272
pii:
doi:

Substances chimiques

Nitrogen N762921K75
Soil 0

Types de publication

Meta-Analysis Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

167272

Informations de copyright

Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest We have no conflicts of interest to disclose.

Auteurs

Shun He (S)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.

Jianqing Du (J)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China.

Yanfen Wang (Y)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China; State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Chinese Academy of Sciences, Beijing 100101, China. Electronic address: yfwang@ucas.ac.cn.

Lizhen Cui (L)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.

Wenjing Liu (W)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Yifan Xiao (Y)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.

Qinwei Ran (Q)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.

Linfeng Li (L)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Zuopei Zhang (Z)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Li Tang (L)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Ronghai Hu (R)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China.

Yanbin Hao (Y)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China.

Xiaoyong Cui (X)

College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China.

Kai Xue (K)

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Yanshan Earth Critical Zone National Research Station, University of Chinese Academy of Sciences, Beijing 101408, China; Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China; Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, China.

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Classifications MeSH

questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › Differences in background environment and...
questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › Prairie › Differences in background environment and...
questionsmedicales.fr › Régions géographiques › Asie › Extrême-Orient › Chine › Tibet › Differences in background environment and...
questionsmedicales.fr › Produits chimiques inorganiques › Gaz › Azote › Differences in background environment and...
questionsmedicales.fr › Eucaryotes › Plantes › Differences in background environment and...
questionsmedicales.fr › Eucaryotes › Viridiplantae › Streptophyta › Embryophyta › Tracheobionta › Magnoliopsida › Poaceae › Differences in background environment and...
questionsmedicales.fr › Environnement et santé publique › Environnement › Sol › Differences in background environment and...
questionsmedicales.fr › Phénomènes physiologiques des appareils urinaire et reproducteur › Phénomènes physiologiques de la reproduction › Reproduction › Fécondation › Differences in background environment and...