Warming enhances the negative effects of shrub removal on phosphorus mineralization potential

Copyright © 2024 Elsevier B.V. All rights reserved..

Shrubs have developed various mechanisms for soil phosphorus utilization. Shrub encroachment caused by climate warming alters organic phosphorus mineralization capability by promoting available phosphorus absorption and mediating root exudates. However, few studies have explored how warming regulates the effects of dominant shrubs on soil organic phosphorus mineralization capability. We provide insights into warming, dominant shrub removal, and their interactive effects on the soil organic phosphorus mineralization potential in the Qinghai-Tibetan Plateau. Real-time polymerase chain reaction was used to quantify the soil microbial phosphatase genes (phoC and phoD), which can characterize the soil organic phosphate mineralization potential. We found that warming had no significant effect on the soil organic phosphate-mineralized components (total phosphate, organic phosphate, and available phosphate), genes (phoC and phoD), or enzymes (acid and alkaline phosphatases). Shrub removal negatively influenced the organic phosphate-mineralized components and genes. It significantly decreased soil organic phosphate mineralization gene copy numbers only under warming conditions. Warming increased fungal richness and buffered the effects of shrub removal on bacterial richness and gene copy numbers. However, the change in the microbial community was not the main factor affecting organic phosphate mineralization. We found only phoC copy number had significant correlation to AP. Structural equation modelling revealed that shrub removal and the interaction between warming and shrub removal had a negative direct effect on phoC copy numbers. We concluded that warming increases the negative effect of shrub removal on phosphorus mineralization potential, providing a theoretical basis for shrub encroachment on soil phosphate mineralization under warming conditions.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:924

Enthalten in:

The Science of the total environment - 924(2024) vom: 10. Apr., Seite 171517

Sprache:

Englisch

Beteiligte Personen:

Yang, Zi [VerfasserIn]
Meng, Lihua [VerfasserIn]
Liu, Ziyang [VerfasserIn]
Chen, Jingwei [VerfasserIn]
Wang, Jiajia [VerfasserIn]
Cui, Hanwen [VerfasserIn]
Naz, Beenish [VerfasserIn]
Wang, Yajun [VerfasserIn]
Xu, Yifeng [VerfasserIn]
Song, Hongxian [VerfasserIn]
An, Lizhe [VerfasserIn]
Xiao, Sa [VerfasserIn]
Chen, Shuyan [VerfasserIn]

Links:

Volltext

Themen:

27YLU75U4W
Available phosphorus
Journal Article
Organophosphates
PhoC gene
PhoD gene
Phosphates
Phosphorus
Qinghai-Tibetan plateau
Soil
Soil microbial community

Anmerkungen:

Date Completed 03.04.2024

Date Revised 03.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.scitotenv.2024.171517

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369517113