Species mixing improves soil properties and enzymatic activities in Chinese fir plantations: A meta-analysis

CATENA, Journal Year: 2022, Volume and Issue: 220, P. 106723 - 106723

Published: Nov. 2, 2022

Language: Английский

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A distinct sensitivity to the priming effect between labile and stable soil organic carbon

New Phytologist, Journal Year: 2022, Volume and Issue: 237(1), P. 88 - 99

Published: Sept. 5, 2022

Soil organic carbon (SOC) is a mixture of various (C) compounds with different stability, which can be distinctly affected by the priming effect (PE). However, little known about how PE changes SOC stability. We address this issue combining results from two experiments and metaanalysis. found that increased prolongation soil preincubation, suggesting higher occurred for more stable than labile SOC. This was further supported metaanalysis 42 observations. There were significant negative relationships between difference in (ΔPE) their differences SOC, microbial biomass C : N ratio, indicating availability exerts vital control on ΔPE. conclude that, compared vulnerable to once microbes are provided exogenous substrates. high vulnerability warrants attention future studies cycling global change.

Language: Английский

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Meta-analysis of the impacts of phosphorus addition on soil microbes

Agriculture Ecosystems & Environment, Journal Year: 2022, Volume and Issue: 340, P. 108180 - 108180

Published: Sept. 18, 2022

Language: Английский

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Differential effects of forest-floor litter and roots on soil organic carbon formation in a temperate oak forest

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 180, P. 109017 - 109017

Published: March 20, 2023

Language: Английский

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Ecosystem‐dependent responses of soil carbon storage to phosphorus enrichment

New Phytologist, Journal Year: 2023, Volume and Issue: 238(6), P. 2363 - 2374

Published: March 24, 2023

Phosphorus deposition can stimulate both plant carbon inputs and microbial outputs. However, how P enrichment affects soil organic (SOC) storage the underlying mechanisms remain unclear. We conducted a meta-analysis of 642 SOC observations from 213 field addition experiments world-wide explored regulations inputs, outputs, characteristics, environmental experimental factors on responses. found that, globally, stimulated by 4.0% (95% CI: 2.0-6.0%), but stimulation only occurred in forest cropland rather than grassland. Across sites, response correlated with that aboveground belowground biomass, suggesting change was more important regulating changes due to addition. Among multiple factors, N fixation status mean annual temperature were best predictors for responses addition, being higher ecosystems dominated symbiotic nitrogen fixers high-temperature regions like tropical forests. Our findings highlight differential ecosystem-dependent contribute accurate predictions dynamics P-enriched world.

Language: Английский

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Soil labile organic carbon fractions mediate microbial community assembly processes during long‐term vegetation succession in a semiarid region

iMeta, Journal Year: 2023, Volume and Issue: 2(4)

Published: Oct. 22, 2023

Conceptual diagram for the labile organic carbon (OC) fractions mediating microbial assembly processes during long-term vegetation succession. Owing to its sparse and low soil (SOC) content, Loess Plateau is one of regions with highest (C) sequestration potential [1]. Vegetation succession a widely adopted strategy ecosystem recovery capacity rehabilitate degraded lands facilitate matter in semiarid region [2-5]. Additionally, it can influence underground community dynamics [6, 7]. The Ziwuling has undergone approximately 160 years secondary succession, making unique area complete sequence natural following farmland abandonment on [4]. Thus, this provide us better understanding patterns changes (Figure 1A Supporting Information: Table S1). Considering vital role microorganisms function, examining temporal communities crucial [8]. composition are essential function [9, 10]. Deterministic stochastic two primary ecological involved [11]. Traditionally, been regarded as being primarily influenced by deterministic processes, aligning principle that, "everything everywhere, but environment selects" [12]. Nevertheless, should not be disregarded when considering random extinctions or dispersal events [13]. Land use type also notable effect [14-16]. Stochastic have greater agricultural fields, whereas their impact diminishes forested soils, bacterial temperate grasslands [16]. Furthermore, there environmental differences between topsoil (0–20 cm) subsoil (20–40 terrestrial ecosystems [17]. Previous studies indicated that dominate assembly, drift prevailing limitation playing dominant subtropical paddy soils [18]. This indicates associations characteristics different spatial distributions, which may affect function. Although extensive research conducted process [12, 19, 20], uncertainties about remain owing resource balance strongly abiotic factors including nitrogen [19, 21, 22]. Research salt marsh plant shown fluctuations SOC exert strongest selective pressure assemblies [23]. Among eight indicators, had greatest [24]. commonly conceptualized stable C fraction storage models [25], easily oxidizable (EOC), particulate (POC), dissolved considered OC serve early indicators variation [26, 27]. In contrast, recalcitrant (ROC) mineral-associated highly [28]. functional diversity SOC, many these predominantly focused association 29, 30], leaving relationship relatively unclear. Within framework biotic cannot overlooked, could determine attributes niche occupancy 31]. Keystone taxa connected taxonomic groups play roles functionality [32]. For example, Sulfuricella, Rhodobacter, Comamonadaceae, drive mediated graphene derivatives [33]. However, keystone largely unknown ecosystems, enhancing comprehending functionality. To address issues, were selected progression explore structure, co-occurrence networks, relationships fractions. We hypothesized that: (1) stronger than because nutrient limitations, (2) given represents readily usable energy source microorganisms, likely mainly governed Long-term significantly increased accumulation 0–40 cm from pioneer weed stage onwards (p < 0.001; Figure 1B). content was higher all stages After shrubland stage, compared When reached forest (>110 years), gradually stabilized Succession age depth affected comprised phyla Proteobacteria, Actinobacteria, Acidobacteria, Gemmatimonadota, Chloroflexi 1C). Basidiomycota, Ascomycota, Mortierellomycota, Glomeromycota, Kixellomycota fungal abundances Actinobacterta, Mortierellomycota subsoil, those Chloroflexi, Ascomycota lower 0.05; relative Overall, decreased alpha communities, Chao 1 Shannon indices (Supporting S2). A combination NMDS analysis, ANOSIM, Adonis statistical tests varied 1D). Soil Tables S2 S3). along across depths investigated using null model analyses. results showed (|βNTI| > 2), especially homogeneous selection, critical bacteria fungi at both 2A–D). weaker subsoil. (homogeneous selection) later 2A,C). Drift limitations 2B,D). networks distinct each 2E–H). Edges average degree depth, demonstrating network more complex (Table S4). positive correlations cross-kingdom further explored S3), found nodes edges among climax forests S4), suggesting complexity networks. Network analysis identified genus Dongia (ASV901) amplicon variant (ASV) bacteria, genera MND1 (ASV155) MB-A2-108 (ASV266) 2E,F S5). ASVs included (ASV4), family Pezizaceae (ASV45), Fusarium (ASV136), class Sordarioclamycetes (ASV689) 2G Alternaria (ASV44), (ASV70), Filobasidium (ASV374), order Chaetothyriales (ASV250) 2H abundance negatively correlated 3A). It worth noting ASV901 correlation taxon–environment community. consisted 60 230 3B), while 44 104 3B). EOC (connection number: 42) most important closely associated EOC, POC, ROC (with connection numbers 20, respectively) linear regression reflected variations bacteria. providing suitable explanation Figures S5 S6). These demonstrated effectively explained OC. Therefore, used mediators illustrate impacts partial least squares path (PLS-PM) 3C–F). main drivers regulated affecting traits total (0.51) S7A), (−0.56) S7C). Bacterial impacted 3D,F S12). effects (0.73) (−0.97) respectively S7B,D). Microbial various life strategies generate responses, [34]. Based mineralization growth rates, classified into r- (copiotrophic, fast-growing) K-strategists (oligotrophic, slow-growing) [35]. study, shifted S8), agreement previous [36, 37]. increase ratio extracellular enzyme activity corroborates result S9 S10). produce enzymes degrade [38-40]. An unstable conducive rapid r-strategists [40], driven [39]. species reduce availability [41]. indicate community, shifts K-strategists, strengthens stability. resources, resulting ASV [42, 43]. Ecological comprising ratios negative due interactions decreasing oscillations disturbed [44, 45]. stability fungi. modularity revealed limiting losing [46]. 2E,H suggests depths. fewer perturbations maintain number nodes, edges, correlations, indicating tended stabilize stage. other generally pools [47]. Consequently, factor communities. suggest increases Clarifying [48]. dominated 2A−D). niche-based theory states structure [14]. Stronger extreme, low-resource general phenomenon [13], explains (lower βNTI) supports first hypothesis. Homogeneous selection usually determined similar conditions exerted significant forces, less expected happen chance [49]. despite still dominating consistent current views, advancement supply under weak Extreme pH acts strict filter phylogenetic clustering, regardless successional age, [50, 51]. we difference small S11), thought caused slow shift processes. importance suddenly 2A,B), related nutrients such PLS-PM driving mechanisms 3C–F S7), confirmed second an applied affects [26]. controlling they [42]. study suggested paramount increase, diminishes. βNTI supported observation pathogenic rhizosphere, decrease benefits maintenance rhizosphere [52, 53]. recognized beneficial bacterium aid pathogen resistance, Xanthomonadaceae, ensure healthy [54]. assembly. Interactions common facilitating 55]. 3C–F), conclusion attributed Some volatiles released antagonistic [56], decomposition [57]. summary, OC, regulating thereby process. illustrated fractions, Given key rather sequences. neutral hypothesis [23], highlighting non-negligible determining directly tested laboratory, so validation through controlled experiments required confirm relationship. new targeted therapy indicator microenvironment. examined cultured metagenomic metatranscriptomic approaches future studies. show drove taxa. addition, Taken together, provides insights link over long scales. Jingwei Shi Lin Yang conceived supervised study. Jiwei Li established experimental sites. Liao collected samples analyzed data. Shuo Jiao, Zhouping Shangguan, Lei Deng assisted data analysis. wrote manuscript input authors. National Natural Science Foundation China (42277471, 42307578, U2243225), Key Development Program Shaanxi Province (2021ZDLSF05-02), Funding Top Young Talents Ten Thousand Plan (2021) Forestry Grassland Administration (2020132601). authors declare no conflict interest. support findings available corresponding author upon reasonable request. DNA sequences generated Center Biotechnology Information's Gen-Bank database project accession PRJNA1022789 PRJNA1023009. scripts saved GitHub https://github.com/Shijingweisjw/iMETA-R-code. Materials (figures, tables, scripts, graphical abstract, slides, videos, Chinese translated version, updated materials) online DOI iMeta http://www.imeta.science/ Please note: publisher responsible any supporting information supplied Any queries (other missing content) directed article.

Language: Английский

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Responses of carbon cycling and soil organic carbon content to nitrogen addition in grasslands globally

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 186, P. 109164 - 109164

Published: Aug. 30, 2023

Understanding how N addition status (i.e., duration, rate, and form of addition) impacts carbon (C) cycling has great implications for C storage prediction grassland management. We examined 257 studies related to in grasslands obtained a dataset 1073 observations meta-analysis. significantly increased plant input (plant above-ground biomass +49.1%, below-ground +16.6%; litterfall +17.4%; dissolved organic +16.4%) across natural globally. For loss processes, enhanced litter decomposition by 9.2% decreased soil respiration 1.1%. In topsoil, microbial was reduced 8.7% (SOC) content 3.1%. fluxes, gross primary productivity ecosystem 24.7% 11.7% respectively, leading negative net exchange. These results indicated that were sinks under addition. Besides climate, the duration most important factor affecting cycling. The response SOC with time but weakened after decade, associated accumulative effects N-induced acidification. at any rate or temperate grassland/meadow while other depended on status. There higher contents lowest exchange low rates Therefore, should be limited 60 kg ha−1 yr−1 increase production globally maintain function as sink. More attention paid acidification improve theoretical models help management practices policies.

Language: Английский

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Maize straw increases while its biochar decreases native organic carbon mineralization in a subtropical forest soil

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 939, P. 173606 - 173606

Published: May 30, 2024

Language: Английский

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Soil microbial community structure and soil fertility jointly regulate soil microbial residue carbon during the conversion from subtropical primary forest to plantations

Geoderma, Journal Year: 2024, Volume and Issue: 441, P. 116767 - 116767

Published: Jan. 1, 2024

Soil microbes mediate soil organic carbon (SOC) storage by affecting microbial residue (C) in terrestrial ecosystems, a main source of SOC. However, how C accumulation changes during the conversion subtropical primary forest to plantations and role community structure regulating these remain unclear. Here, effects from on three plantations, including tea (Camellia sinensis var. assamica), walnut (Juglans regia), macadamia (Macadamia integrifolia). We assessed amino sugars content relative importance structure, fertility, aboveground biomass four types southwest Yunnan province, China. Our results show that total accounted for 27.8 % SOC average across all types, fungal contributed more than bacterial different types. Conversion decreased fungal, bacterial, plantation except tea. Microbial contents was significantly lower plantation. Fungal increased with increasing composition, abundance, fertility. fertility regulated accumulation, which major determinant via its influence abundance. Overall, we found abundance change composition. also negatively correlated C, while positively related accumulation. Ascomycota most important phylum C. These findings suggest are principal regulators plantations.

Language: Английский

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Effects of microbial groups on soil organic carbon accrual and mineralization during high- and low-quality litter decomposition

CATENA, Journal Year: 2024, Volume and Issue: 241, P. 108051 - 108051

Published: April 21, 2024

Language: Английский

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