Differential impacts of nitrogen compounds on soil acid phosphatase activity in a meadow steppe

Ecological Processes, Journal Year: 2025, Volume and Issue: 14(1)

Published: March 12, 2025

Abstract Background Nitrogen (N) addition profoundly alters soil phosphatase activities and induces widespread microbial phosphorus (P) limitation in grassland ecosystems. However, the long-term effects of different rates chemical forms N on acid (ACP) activity P availability remain unclear. Here, based a 10-year experiment, we investigated range (0–50 g m −2 yr −1 ) applied as either (NH 4 2 SO or urea ACP northern China meadow steppe, with without mowing management. Results We found that remained unaffected by until certain thresholds were reached (< 10 for [(NH ] < 20 urea), beyond which it declined sharply. exerted stronger inhibitory effect compared to urea, former primarily acting through acidification latter decrease bacterial diversity. In contrast, regimes did not significantly alter under form. Conclusions Our findings underscore necessity accounting both when assessing atmospheric deposition impacts activity. These results inform development management strategies mitigate declines enzyme enhance sustainability

Language: Английский

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Impacts of Land Use on Soil Nitrogen-Cycling Microbial Communities: Insights from Community Structure, Functional Gene Abundance, and Network Complexity

Life, Journal Year: 2025, Volume and Issue: 15(3), P. 466 - 466

Published: March 14, 2025

This study investigates the effects of different land-use types (forest, arable land, and wetland) on key soil properties, microbial communities, nitrogen cycling in Lesser Khingan Mountains. The results revealed that forest (FL) wetland (WL) soils had significantly higher organic matter (SOM) content compared with land (AL), total phosphorus (TP) being highest FL available (AN) WL. In terms enzyme activity, AL WL showed reduced activities ammonia monooxygenase (AMO), β-D-glucosidase (β-G), β-cellobiosidase (CBH), while exhibiting increased N-acetyl-β-D-glucosaminidase (NAG) highlighting impact use dynamics. also exhibited diversity evenness AL. dominant bacterial phyla included Actinobacteriota, Proteobacteria, Acidobacteriota, Acidobacteriota most abundant Proteobacteria Network analysis complex connected network, simpler but more stable networks, suggesting influence community interactions. Regarding genes, AOA-amoA was AL, AOB-amoA enriched FL, reflecting oxidation. These findings highlight how affect structures, cycling, offering valuable insights for sustainable management.

Language: Английский

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The impact of cashew ( Anacardium occidentale L.) on biological activity, nutrient cycling and carbon sequestration in tropical soil

Journal of Plant Nutrition, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 17

Published: March 20, 2025

Language: Английский

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Tillage System as a Practice Affecting the Quality of Soils and Its Sustainable Management

Sustainability, Journal Year: 2025, Volume and Issue: 17(7), P. 2867 - 2867

Published: March 24, 2025

Sustainable soil management through the use of an appropriate tillage system can positively change edaphic parameters. The aim present study was to compare effects that reduced (RT) and conventional (CT) systems have on changes in selected physical chemical properties enzymatic activity various types. included following types: Eutric Fluvisol, Mollic Haplic Chernozem, Luvisol, Regosol, Gleysol, Stagnic Planosol. Soil samples were collected Danubian Lowland Eastern Slovak Lowland. parameters determined samples: texture, pH, hydrolytic acidity sum basic exchangeable cations, contents carbon (TOC), nitrogen (TN), dissolved organic (DOC), activities dehydrogenases (DEH), catalase (CAT), peroxidases (PER), alkaline phosphatase (AlP), acid (AcP), proteases, β-glucosidase (BG). reaction analysed soils, RT CT cultivations alike, ranged from acidic neutral, sorption differed between individual TOC 16.53 42.07 g kg−1 for cultivation 15.51 38.90 tillage. values quality indices correlated with TOC, DOC, TN, as well base cation exchange capacity, degree saturation complex. studied enzymes, but intensity direction these depended type. Based enzyme results, such GMea TEI calculated. proved be a more sensitive indicator than GMea. It shown that, all types regardless system, Gleyosols had most variable properties. For tillage, Luvisol Regosol characterised by greatest uniformity. In general, soils under those simplified

Language: Английский

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Positive effects of composite material immobilized enzymes in 2,4,6-trichlorophenol degradation on soil properties and plant growth

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(5)

Published: March 27, 2025

Language: Английский

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