Simplified microbial network reduced microbial structure stability and soil functionality in alpine grassland along a natural aridity gradient

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 191, P. 109366 - 109366

Published: Feb. 13, 2024

Language: Английский

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Universal beta-diversity–functioning relationships are neither observed nor expected

Trends in Ecology & Evolution, Journal Year: 2023, Volume and Issue: 38(6), P. 532 - 544

Published: Feb. 17, 2023

Language: Английский

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Elevation Influences Belowground Biomass Proportion in Forests by Affecting Climatic Factors, Soil Nutrients and Key Leaf Traits

Plants, Journal Year: 2024, Volume and Issue: 13(5), P. 674 - 674

Published: Feb. 28, 2024

Forest biomass allocation is a direct manifestation of biological adaptation to environmental changes. Studying the distribution patterns forest along elevational gradients ecologically significant for understanding specific impacts global change on plant resource strategies. While aboveground has been extensively studied, research belowground remains relatively limited. Furthermore, and driving factors proportion (BGBP) are still unclear. In this study, we investigated influences climatic factors, soil nutrients, key leaf traits pattern BGBP using data from 926 forests at 94 sites across China. were calculated root depth 50 cm. Our findings indicate considerable variability in macro scale, showing increasing trend (p < 0.01). significantly decreases with temperature precipitation increases annual mean evapotranspiration (MAE) It phosphorus content pH Key (leaf nitrogen (LN) (LP)) positively correlated BGBP. Climatic (R2 = 0.46) have strongest explanatory power variation elevations, while 0.10) 0.08) also play roles. Elevation directly indirectly through influencing such as climate conditions, nutrient availability, traits, effects being more pronounced than indirect effects. This study reveals controlling forests’ gradients, providing vital ecological insights into impact strategies offering scientific guidance ecosystem management conservation.

Language: Английский

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Soil microbial gene abundance rather than diversity and network complexity predominantly determines soil multifunctionality in Tibetan alpine grasslands along a precipitation gradient

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(5), P. 1210 - 1221

Published: March 16, 2024

Abstract The relationship between biodiversity and ecosystem functioning has mainly focused on plant communities, with comparably little known about soil microbial‐driven functions. Climate change severely threatens microbial roles, but how communities determine multifunctionality under climate is poorly understood. Here, we evaluated the effects of diverse bacterial fungal properties, including gene abundance, diversity network complexity, (nine functions) across a 3000 km transect along natural precipitation gradient in Tibetan alpine grasslands. Variation partitioning analyses were performed to disentangle relative importance properties variation multifunctionality. Moreover, structural equation modelling was adopted explore influencing pathways precipitation‐induced changes edaphic factors and, consequently, Soil positively associated complexity. Microbial abundance more important driver than In addition, determined by pH. Meanwhile, much larger those fungi. closely different (cellulolysis, ligninolysis, nitrogen reduction, denitrification nitrate fixation etc.) (soil saprotrophs, arbuscular mycorrhizal pathogens functional guilds, which exert vital regulations an array biogeochemical cycling processes. Our results provide large‐scale evidence contribution complexity grasslands changing precipitation, pivotal for understanding roles modulating predicting future changes. Read free Plain Language Summary this article Journal blog.

Language: Английский

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Water rather than nitrogen availability predominantly modulates soil microbial beta-diversity and co-occurrence networks in a secondary forest

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 167996 - 167996

Published: Oct. 21, 2023

Language: Английский

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Critical role of multidimensional biodiversity in contributing to ecosystem sustainability under global change

Geography and sustainability, Journal Year: 2023, Volume and Issue: 4(3), P. 232 - 243

Published: May 13, 2023

The 21st century has seen an acceleration of global change, including climate elevated carbon dioxide, nitrogen deposition, and land-use intensification, which poses a significant threat to ecosystem functioning. Nevertheless, studies on the relationship between biodiversity functioning (BEF) have consistently demonstrated that enhances its stability, even in variable environmental conditions. These findings potentially indicate critical role promoting sustainable provisioning under change. Our paper provides comprehensive review current BEF research response multiple change factors. We demonstrate (1) assessing effects requires consideration dimensions diversity, such as diversity across trophic levels (plants, animals, microbes), facets (taxonomy, functional traits, phylogeny), spatial scales (local, regional, landscape scales). (2) interaction factors may lead greater reduction than single factor. (3) Multidimensional regulates factors, indicating high multidimensional can mitigate negative impacts Overall, we emphasize recognizing importance is for sustaining Therefore, prioritizing conservation efforts maintain enhance all essential address challenges future

Language: Английский

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Factors driving carbon accumulation in forest biomass and soil organic carbon across natural forests and planted forests in China

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 6

Published: Jan. 8, 2024

Introduction Forests play a pivotal role within the global carbon cycle. However, how to enhance storage in existing forests remains unclear. Methods In this study, we conduct comprehensive analysis of data from 2,948 forest sites across China. Utilizing structural equation modeling (SEM), investigate intricate relationship between climate, tree species diversity, stand structure, function traits, initial biomass stocks (BCi), soil organic (Soil C content), and accumulation (ΔBC) (ΔSOC) both natural (NF, n = 1,910) planted (PF, 1,038). Results Our findings underscore critical influence diversity structure drivers direct indirect accumulation, with distinct emerging based on pools NF PF. Specifically, increasing its minimum maximum value through management-results 14.798 tC/ha reduction BC 0.686 SOC NF. Conversely, amplifies PF by 0.338 0.065 tC/ha, respectively. Enhancing structure-such as density-results 231.727 NF, 10.668 64.008 increment Discussion Overall, our results indicate that higher density age-group limits further current contrast, low development potential forests. To sequestration capacity, China should change policy completely banning logging Natural need thinning reduced while increase density.

Language: Английский

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Regional emissions of soil greenhouse gases across Tibetan alpine grasslands

Geoderma, Journal Year: 2024, Volume and Issue: 443, P. 116843 - 116843

Published: March 1, 2024

Soil greenhouse gas (GHG) emissions play an important role in regional climate feedback on the Qinghai-Tibetan Plateau (QTP). Previous studies have focused soil GHGs based observations within a limited space QTP, however, GHG remain unclear. Analyzing samples from 25 sites along 2,700 km transect across we showed significantly higher CO2 and N2O emission rates alpine meadows than other upland grassland types, but similar CH4 uptake all types. The spatial variations of total balance were dominated by emission. We found that was primarily constrained high pH, low moisture nutrient availability, fungal abundance, inhibited while methanotrophic abundance. Furthermore, estimated current 144.4 Tg CO2-eq yr−1 for surface Tibetan grasslands, which increased 17.6%, 24.8%, 38.9% under warming scenarios 1.5℃, 2℃ 3℃, respectively. Our results provide baseline responding to QTP.

Language: Английский

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Soil Moisture Threshold of Methane Uptake in Alpine Grassland Ecosystems

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT Methane (CH 4 ) uptake in alpine ecosystems is an important component of the global CH sink. However, large uncertainties remain regarding magnitude and spatial patterns uptake, owing to its extensive variability, diverse controlling factors, limited regional‐scale observations. Here, we investigated field ecosystem along a 3200‐km transect across various grasslands on Qinghai–Tibetan Plateau (QTP). We found substantial variation situ among grasslands, with highest rates drier regions mid‐western QTP. Soil moisture was most factor exhibiting remarkably low threshold 6.2 ± 0.1 v/v %. Below this threshold, constrained by soil moisture, moisture‐induced nitrogen limitation, high temperatures. Above mainly gas diffusion By integrating grid predictors random forest model trained 1851 measurements encompassing both our observations regional synthesis QTP, estimated 0.88 0.020 Tg year −1 from all This higher estimate, primarily driven steppes, significantly greater than current estimates models. Our findings highlight importance sink dry characterized suggesting that contribution drylands may have been substantially underestimated budget.

Language: Английский

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Biodiversity of soil biota and plants stabilises ecosystem multifunctionality with increasing number of global change factors

Journal of Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Increasing the number of global change factors (GCFs) strongly influences biodiversity and ecosystem functions. However, specific mechanisms through which biodiversity, especially soil stabilise multifunctionality under rapidly growing GCFs remain elusive. Here, we implemented a multifaceted approach involving multiple (nitrogen addition, phosphorus addition acidification) in Inner Mongolia grassland to elucidate impact species diversity, community composition temporal asynchrony within plant biota on multifunctional stability. Our findings showed that with an increasing GCFs, stability broadly decreased. The negative effects were primarily associated nematodes plants, while mainly fungi. Additionally, indirect influence diversities plants its was manifested their or asynchrony. Synthesis. results provide new empirical evidence is at least as important determining GCFs. These highlight importance conserving integrating it into conservation efforts maintain face

Language: Английский

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