Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability
Wu, Huili (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Xiang, Wenhua (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Ouyang, Shuai (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Forrester, David I. (Swiss Federal Institute for Forest. Snow and Landscape Research)
Zhou, Bo (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Chen, Lingxiu (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Ge, Tida (Institute of Subtropical Agriculture (Hunan, Xina))
Lei, Pifeng (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Chen, Liang (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Zeng, Yelin (Central South University of Forestry and Technology. Faculty of Life Science and Technology)
Song, Xinzhang (Zhejiang A&F University. State Key Laboratory of Subtropical Silviculture)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peng, Changhui (Université du Québec à Montréal. Department of Biological Sciences)

Data:	2019
Resum:	Increased availability of soil phosphorus (P) has recently been recognised as an underlying driving factor for the positive relationship between plant diversity and ecosystem function. The effects of plant diversity on the bioavailable forms of P involved in biologically mediated rhizospheric processes and how the link between plant and soil microbial diversity facilitates soil P bioavailability, however, remain poorly understood. - This study quantified four forms of bioavailable P (CaCl2-P, citric-P, enzyme-P and HCl-P) in mature subtropical forests using a novel biologically based approach, which emulates how rhizospheric processes influence the release and supply of available P. Soil microbial diversity was measured by Illumina high-throughput sequencing. - Our results suggest that tree species richness significantly affects soil microbial diversity (p < 0. 05), increases litter decomposition, fine-root biomass and length and soil organic carbon and thus increases the four forms of bioavailable P. A structural equation model that links plants, soil microbes and P forms indicated that soil bacterial and fungal diversity play dominant roles in mediating the effects of tree species richness on soil P bioavailability. - An increase in the biodiversity of plants, soil bacteria and fungi could maintain soil P bioavailability and alleviate soil P limitations. Our results imply that biodiversity strengthens plant and soil feedback and increases P recycling.
Ajuts:	European Commission 610028
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Forest ecosystem ; High-throughput sequencing ; Phosphorus extraction method ; Soil bioavailable phosphorus ; Plant-microbe-soil model
Publicat a:	Functional ecology, Vol. 33, issue 8 (Aug. 2019) , p. 1549-1560, ISSN 1365-2435

DOI: 10.1111/1365-2435.13355

Postprint 27 p, 1.3 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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