Heavy Nitrogen Application Rate and Long-Term Duration Decrease the Soil Organic Carbon and Nitrogen Sequestration Rates in Forest Ecosystems

Forests, Год журнала: 2024, Номер 15(9), С. 1585 - 1585

Опубликована: Сен. 10, 2024

Nitrogen addition alters soil organic carbon (SOC) and total nitrogen (TN) accumulation in forest ecosystems, but the responses of SOC TN sequestration rates dynamics to ecosystems worldwide remain unclear. This study conducted a global analysis evaluate effects application rate, duration (time), humidity on from 257 data points (63 articles). increased by 4.48% 10.18%, respectively. The were 0.65 0.11 g kg−1 yr−1, Moreover, percentage changes overall with rate addition; however, decreased addition. In addition, change index. conclusion, promoted soil, TN; they whereas TN. These results enhance our understanding cycling soils context deposition.

Язык: Английский

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Effects of Sewage Sludge Compost on Carbon, Nitrogen, Phosphorus, and Sulfur Ratios and Soil Enzyme Activities in a Long-Term Experiment

Agronomy, Год журнала: 2025, Номер 15(1), С. 143 - 143

Опубликована: Янв. 9, 2025

The carbon, nitrogen, phosphorus, and sulfur (CNPS) ratios of soils are known to be relatively stable parameters, characterizing different land uses. We hypothesized that the long-term application sewage sludge compost (SSC) would not change these but increase concentration elements quality organic matter (OM), as well soil enzyme activities. Hence, chemical microbiological properties were studied in a 20-year experiment. plots grouped into five blocks treated every third year with SSC at rates 0, 9, 18, or 27 t ha−1. Three plants, crop rotation, tested sown follows: rye, rye hairy vetch, maize. results showed basic parameters (pH, OM content, E4/E6 ratio, NO3-NO2-N, AL-P2O5, moisture content) increased, along doses for rye. Similar trends found CNPS concentrations, β-glucosidase, alkaline phosphatase activities, while acidic activity was reduced. C:N, C:S, N:S affected by application. main factors treatment effects plant-available phosphorus (ammonium lactate (AL)-soluble P2O5), total P, based on principal component analysis. canonical correspondent analyses revealed activities C:P, N:P β-glucosidase correlated P forms pH strongly all enzymes. Based role microbes became more important increasing mobilization. conclude addition could improve health through pH, OM, nutrient microbial activity. Also, some elemental have an regulation

Язык: Английский

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Increased in local precipitation weakenes long-term responses of soil carbon and nitrogen to climate change: Insights from a 37-year experiment

Global and Planetary Change, Год журнала: 2025, Номер unknown, С. 104745 - 104745

Опубликована: Фев. 1, 2025

Язык: Английский

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Asymmetric responses of soil dissolved organic carbon and dissolved organic nitrogen to warming: A meta-analysis

CATENA, Год журнала: 2025, Номер 252, С. 108871 - 108871

Опубликована: Фев. 27, 2025

Язык: Английский

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Ecoenzymatic stoichiometry as a temporally integrated indicator of nutrient availability in soils

Soil Science & Plant Nutrition, Год журнала: 2024, Номер 70(4), С. 246 - 269

Опубликована: Апрель 16, 2024

The extent to which soil enzyme activity in assessing nutrient availability is useful has been controversial. In this review, we discuss the utility of ecoenzymatic stoichiometry (i.e. ratio nutrient- carbon (C)-acquiring activities) on basis resource allocation model for ecoenzyme synthesis. Both selection appropriate enzymes and balance between relative amounts substrates are decisive factors utilizing stoichiometry. Ecoenzymatic can evaluate nitrogen (N), phosphorus, sulfur many soils catalytic reactions substrate-limited but not enzyme-limited. However, approach does seem be applicable where microbes limited by other than availability, such as low temperature, Certain enzymes, N-acetyl-β-glucosaminidase protease, appear insensitive N because they release compounds containing both C serve sources C/energy. We propose use L-asparaginase urease N-acquiring that a compound NH4+) hydrolysis product. considered an indicator long-term (weeks) temporally integrated rather instantaneous plants well microbes, (i) persistence extracellular soils; (ii) significant correlation measurements reflecting quantity available nutrients soil; (iii) plant uptake. This review also identifies challenges microbial limitation using With comprehensive understanding underlying mechanisms limitations, used biologically relevant combination with approaches conventional chemical extraction methods addition approach.

Язык: Английский

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Excessive climate warming exacerbates nitrogen limitation on microbial metabolism in an alpine meadow of the Tibetan Plateau: Evidence from soil ecoenzymatic stoichiometry

The Science of The Total Environment, Год журнала: 2024, Номер 930, С. 172731 - 172731

Опубликована: Апрель 23, 2024

Язык: Английский

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Response of C:N:P stoichiometry to long-term drainage of peatlands: Evidence from plant, soil, and enzyme

The Science of The Total Environment, Год журнала: 2024, Номер 919, С. 170688 - 170688

Опубликована: Фев. 4, 2024

Язык: Английский

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Effects of Warming on Change Rate of Soil Organic Carbon Content in Forest Soils

Forests, Год журнала: 2025, Номер 16(1), С. 59 - 59

Опубликована: Янв. 1, 2025

Climate warming affects the carbon cycle in terrestrial environments. However, effects of on change rate soil organic (SOC) content forest soils are unclear. Here, we extracted 276 data points from 98 published papers to examine SOC mineral profile (0–20 or 0–30 cm), focusing regulatory magnitude and duration humidity index. Warming promoted an increase 67.47 69.90 g kg−1 soils, with a 0.85 yr−1 global scale. The decreased 1.22 0.11 at 0–2 >2 °C, respectively, it changed 0.96 −0.81 −0.51 durations 0–5, 5–10, >10 years, respectively. was higher index value 30–50 than >50. Although climate increases content, decreases increased but These findings help elucidate accumulation context change.

Язык: Английский

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Meta-analysis shows experimental warming facilitated global litter decomposition and nitrogen release

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Язык: Английский

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Microbial Necromass Nitrogen Accumulation and Its Response to Soil Multifunctionality Following Plantation Restoration in a Subtropical Karst Region

Land Degradation and Development, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

ABSTRACT Microbial necromass nitrogen (MNN) is increasingly recognized as a major source of soil N, playing crucial role in N sequestration and sustaining balance. However, quantitative data on the contribution MNN to total its relationship with multifunctionality (SMF) karst plantation ecosystems remain lacking. In this study, (measured via amino sugar analysis) SMF (calculated using mean value method) were determined across five plantations unafforested land (control) Wuling Mountains subtropical China. The content ranged from 1.02 1.67 g kg −1 , contributing 53.8% 75.4% Cinnamomum camphora pure forest exhibiting highest values among all stand types control. afforestation enhanced nutrient provision, microbial activity, biomass, increasing by 54% compared functional parameters generally higher organic horizon than topsoil subsoil, was greater subsoil. Enzyme stoichiometry ratios indicated that P limitation prevalent both control soils, positively correlated C/P N/P ( p < 0.001). Increases closely associated SMF, encompassing available (AN) being key predictor accumulation. partial least squares path model revealed provision contributed accumulation, AN had direct effect coefficient 0.72 it 0.01). This work underscored critical potential support ecosystem functioning region.

Язык: Английский

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