Natural forests promote phosphorus retention in soil
Yu, Zhen (Nanjing University of Information Science & Technology. Institute of Ecology)
Guoyi, Zhou (Nanjing University of Information Science & Technology. Institute of Ecology)
Liu, Lei (Nanjing University of Information Science & Technology. Institute of Ecology)
Manzoni, Stefano (Stockholm University)
Ciais, Philippe (Laboratoire des Sciences du Climat et l'Environnement)
Goll, Daniel (Centre National de la Recherche Scientifique. Laboratoire des Sciences du Climat et de l'Environnement)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Wang, Wantong (Henan Normal University)
Zhu, Jie (Chinese Academy of Sciences. South China Institute of Botany)
Li, Lin (Nanjing University of Information Science & Technology. Institute of Ecology)
Yan, Junhua (Chinese Academy of Sciences. South China Institute of Botany)
Liu, Juxiu (Chinese Academy of Sciences. South China Institute of Botany)
Tang, Xuli (Chinese Academy of Sciences. South China Institute of Botany)

Data:	2022
Resum:	Soil phosphorus (P) availability often limits plant productivity. Classical theories suggest that total P content declines at the temporal scale of pedogenesis, and ecosystems develop toward the efficient use of scarce P during succession. However, the trajectory of ecosystem P within shorter time scales of succession remains unclear. We analyzed changes to P pools at the early (I), middle (II), and late (III) stages of growth of plantation forests (PFs) and the successional stages of natural forests (NFs) at 1969 sites in China. We found significantly lower P contents at later growth stages compared to earlier ones in the PF (p < . 05), but higher contents at late successional stages than in earlier stages in the NF (p < . 05). Our results indicate that increasing P demand of natural vegetation during succession, may raise, retain, and accumulate P from deeper soil layers. In contrast, ecosystem P in PF was depleted by the more rapidly increasing demand outpacing the development of a P-efficient system. We advocate for more studies to illuminate the mechanisms for determining the divergent changes, which would improve forest management and avoid the vast degradation of PF ecosystems suffering from the ongoing depletion of P.
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Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Growth stage ; Natural forests ; Phosphorus ; Planted forests ; Successional stage
Publicat a:	Global change biology, Vol. 28, Issue 4 (February 2022) , p. 1678-1689, ISSN 1365-2486

DOI: 10.1111/gcb.15996

Postprint 22 p, 1.1 MB

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