Transforming heterotrophic to autotrophic denitrification process: Insights into microbial community, interspecific interaction and nitrogen metabolism

Bioresource Technology, Journal Year: 2021, Volume and Issue: 345, P. 126471 - 126471

Published: Dec. 2, 2021

Language: Английский

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Effects of organic fertilizer incorporation practices on crops yield, soil quality, and soil fauna feeding activity in the wheat-maize rotation system

Frontiers in Environmental Science, Journal Year: 2022, Volume and Issue: 10

Published: Nov. 17, 2022

The decline in soil quality is becoming a significant process of degradation. Optimizing organic fertilizer incorporation practices cropland essential to enhancing crop productivity and health. However, that requires comprehensive understanding yield reaction across an application gradient fertilizer. We investigated the effect on yield, quality, fauna feeding activity from fluvo-aquic soils wheat ( Triticum aestivum )-maize Zea mays ) rotation field. six treatments included were unfertilized N control (UC), traditional chemical (TF, 600 kg ha −1 year ), recommended fertilization (RF, 400 with no rate, low-level 15.0 (RFLO), medium-level 30.0 (RFMO), high-level 45.0 t (RFHO) application, respectively. research findings show increased 26.4%–44.6% for 12.5%–40.8% maize compared RF plots. long-term rate carbon 54.7% 110.6% versus UC plots 27.9%–74.0% (TF RF) treatments, total nitrogen content 41.8% 59.2%, 24.6%–39.2%. inorganic combined significantly enhanced sucrose (30.1%–51.9%), urease (28.4%–38.3%), β-1,4-glucosidase (34.6%–122.4%) activity. Still, nitrite reductase, polyphenol oxidase, catalase lower 27.3%–49.9%, 8.5%–26.3% 23.3%–34.3% than single applications groups. Meanwhile, results showed improved by 35.2%–42.5%, excessive reduced level fauna.

Language: Английский

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Exotic Spartina alterniflora invasion enhances sediment N-loss while reducing N retention in mangrove wetland

Geoderma, Journal Year: 2023, Volume and Issue: 431, P. 116362 - 116362

Published: Jan. 30, 2023

Wide and rapid Spartina alterniflora invasion has threatened the sustainability of coastal wetlands China, a significant impact on sediment biogeochemical cycle. However, effects exotic dissimilatory nitrates (NOx−) reduction processes mechanisms underlying these pathways in mangrove have not been well studied. Here, denitrification (DEN), anaerobic ammonium oxidation (ANA) nitrate to (DNRA) rates, contributions (DEN%, ANA%, DNRA%), associated functional genes (nirS, anammox 16S rRNA nrfA) controlling factors were investigated surface sediments (0–5 cm) communities ecotone Zhangjiang Estuary, China. Significant spatial differences DEN, DNRA, DEN%, DNRA% found among different plant (p < 0.05 for all). DEN is dominant pathway NOx− community (87–89 %) (75–78 %), while (41–51 DNRA (36–51 compete with each other community. Organic matter was most dominating factor rates. Without accounting confounding factors, significantly reduced nitrogen retention index (NIRI), causing large amount (N) loss wetlands. We estimated that increased N-loss (831.09 ± 55.16 t N yr−1) but (783.48 37.73 habitats China within last 40 years (1980–2020). Thus, enhances reducing wetlands, which may threaten buffer function wetland pools protection estuarine ecosystems.

Language: Английский

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MBBR start-up with HN-AD bacteria inoculation: Comparative analysis in simulated and real wastewater for performance, microbial characteristics, and nitrogen removal mechanism

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 58, P. 104786 - 104786

Published: Jan. 21, 2024

Language: Английский

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Unraveling the ecological threads: How invasive alien plants influence soil carbon dynamics

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 356, P. 120556 - 120556

Published: March 26, 2024

Language: Английский

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Spatial soil heterogeneity rather than the invasion of Spartina alterniflora drives soil bacterial community assembly in an Eastern Chinese intertidal zone along an estuary coastline

CATENA, Journal Year: 2024, Volume and Issue: 237, P. 107784 - 107784

Published: Jan. 9, 2024

Language: Английский

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Significant alterations in soil fungal communities along a chronosequence of Spartina alterniflora invasion in a Chinese Yellow Sea coastal wetland

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 693, P. 133548 - 133548

Published: July 23, 2019

Language: Английский

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Reservoir water stratification and mixing affects microbial community structure and functional community composition in a stratified drinking reservoir

Journal of Environmental Management, Journal Year: 2020, Volume and Issue: 267, P. 110456 - 110456

Published: April 30, 2020

Language: Английский

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A unique bacterial and archaeal diversity make mangrove a green production system compared to rice in wetland ecology: A metagenomic approach

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 781, P. 146713 - 146713

Published: March 25, 2021

Language: Английский

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Tracking annual dynamics of mangrove forests in mangrove National Nature Reserves of China based on time series Sentinel-2 imagery during 2016–2020

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2022, Volume and Issue: 112, P. 102918 - 102918

Published: July 18, 2022

Mangrove National Nature Reserves (MNNRs) play an extraordinarily significant role in conserving mangrove forests and their habitats. In China, one-fourth of the total were located MNNRs. Understanding annual spatial distributions conversions these are important for precision conservation rehabilitation efforts. However, to date, land cover maps China's MNNRs still unavailable. Here, we proposed a rapid robust approach produce each time period 2016–2020 based on 10-m resolution Sentinel-2 imagery. The was developed using object-based image analysis, Otsu Random Forest algorithm. Results showed that 1) during 2016–2020, areal extents forest all continuously increased from 5912 ha 6128 ha; 2) obvious increase found Zhanjiang Reserve where by 127 ha, accounted 59% national increases; 3) newly grown mainly converted tidal flats aquaculture ponds. Our could provide basis managing ecosystems supporting implementation Sustainable Development Goals related coastal development.

Language: Английский

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