Hydraulic diversity stabilizes productivity in a large-scale subtropical tree biodiversity experiment

Schnabel, Florian; Liu, Xiaojuan; Kunz, Matthias; Barry, Kathryn E.; Bongers, Franca J.; Bruelheide, Helge; Fichtner, Andreas; Li, Shan; Pfaff, Claas-Thido; Schmid, Bernhard; Schwarz, Julia; Tang, Zhiyao; Yang, Bo; Bauhus, Jürgen; Oheimb, Goddert von; Ma, Keping; Wirth, Christian

doi:10.1101/2021.01.06.425434

Cited by 2 publications

(2 citation statements)

References 65 publications

(229 reference statements)

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“…High tree richness promotes environmental heterogeneity (such as increasing SOC with succession) through diversification of available resources for soil fungi and feedback between plants and fungi (Ladygina & Hedlund, 2010;Liu et al, 2021;Sun et al, 2018;Wardle et al, 2004) and thus enhances the deterministic selection and positive effects on fungal communities. High tree richness has a positive effect on tree productivity (Huang et al, 2018;Schnabel et al, 2021), which can increase tree carbon allocation underground and enhance root exudates. Thus, tree richness has a positive effect on the soil fungal community composition via increased root exudates and soil nutrients (Nakayama et al, 2019).…”

Section: Plant Traits and Soil Properties Drive Changes In The Microb...mentioning

confidence: 99%

Assembly processes, driving factors, and shifts in soil microbial communities across secondary forest succession

et al. 2023

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Secondary forest succession after clear‐cutting is one of the foremost ecosystem restoration strategies, while soil microbes play essential roles in the processes by modulating nutrient cycling. However, the assembly processes and driving factors of soil microbial communities across secondary forest succession remain unclear. Here, we studied the assembly processes of soil microbial communities and examined shifts in soil microbial community‐associated functional dynamics across secondary forest succession. Our results showed that the stochastic process was more important in shaping bacterial community assembly throughout the successional process [modified stochasticity ratio (MST) > 50%], while the fungal community assembly was initially governed by deterministic processes (MST < 50%), but there was a progressive increase in stochastic selection as succession proceeded. Soil organic carbon and pH were principal factors for the explanation of changes in the bacterial community structure (total explained 43% change), and tree richness and productivity were principal factors for the explanation of shifts in the fungal community structure (total explained 17% change). The relative abundance of nitrogen transformation and saprotroph functional groups increased gradually with succession, whereas ectomycorrhizal fungi significantly declined. The results suggested that microbial community succession might accelerate the soil carbon and nitrogen turnover rates. Used together, the mechanisms shaping fungal and bacterial community structure are different in secondary forest succession and highlight that those fungi and bacteria are primarily controlled by plant traits and soil properties, respectively. Variations in microbial functional groups provide new insight into the mechanisms underlying the soil microbe‐driven soil nutrient cycles during secondary forest succession.

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Section: Plant Traits and Soil Properties Drive Changes In The Microb...mentioning

confidence: 99%

Assembly processes, driving factors, and shifts in soil microbial communities across secondary forest succession

et al. 2023

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“…In the face of global climate change and an expanding human population, maintaining preserving forest productivity stability is an important management goal for sustaining ecosystem services. Temporal stability, or a forest's capacity to sustain ecosystem functionality over time, has gradually become a major focus of theoretical and empirical research within forest ecology and management (Jucker et al, 2014;Morin et al, 2014;Liang et al, 2016;Schnabel et al, 2021;Qiao et al, 2022Qiao et al, , 2023. However, the specific contributions of abiotic and biotic factors to large-scale productivity stability remain subjects of extensive debate.…”

Section: Introductionmentioning

confidence: 99%

Stand structure is more important for forest productivity stability than tree, understory plant and soil biota species diversity

Wang,

Dong,

Liu

2024

Front. For. Glob. Change

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IntroductionThe stability of forest productivity is an important management goal in order to sustain ecosystem services for an expanding human population and in the face of global climate change. Evidence from theoretical, observational, and experimental studies has demonstrated that higher biodiversity promotes stability of forest productivity. However, the majority of these studies have focused solely on tree diversity and have neglected the potentially important role of understory plant and soil biodiversity.MethodsIn this study, we explain the effect of tree, understory woody and herbaceous plant, and soil biota (fauna, fungi, and bacteria) species diversity on forest productivity and its stability over time (2000–2020) across an area of Northeast China covering 145 million hectares. We explore the eight stand structure variables for stability of forest productivity and the relationship between productivity stability and tree, understory plant, and soil biota species diversity.ResultsOur results show no significant, direct impact of understory plant, soil fungi, and bacteria species diversity on the stability of the forest ecosystem. Tree species diversity indirectly affects productivity stability by directly influencing stand structure, whereas soil fauna species diversity indirectly influences stability through its relationship with tree species diversity. Stand structure is more important than tree and soil fauna species diversity for forest productivity stability. Specifically, increasing crown height (CH) from its minimum to maximum value leads to a substantial gain of 20.394 in forest productivity stability. In contrast, raising tree species diversity (α-Tree) and soil fauna species diversity (α-Fauna) from their minimum to maximum values results in a modest reduction of only 0.399 and 0.231 in forest productivity stability, respectively.DiscussionTo increase the stability of forest productivity in response to climate change, we should adjust the stand structure more in the process of management rather than just considering biodiversity. Overall, this study highlights the ecological risks associated with large-scale biotic homogenization under future climate change and management practices.

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Hydraulic diversity stabilizes productivity in a large-scale subtropical tree biodiversity experiment

Cited by 2 publications

References 65 publications

Assembly processes, driving factors, and shifts in soil microbial communities across secondary forest succession

Assembly processes, driving factors, and shifts in soil microbial communities across secondary forest succession

Stand structure is more important for forest productivity stability than tree, understory plant and soil biota species diversity

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