Optimizing nitrogen fertilization rate to achieve high yield and high soil quality in paddy ecosystems with straw incorporation

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 375, P. 124158 - 124158

Published: Jan. 21, 2025

Language: Английский

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Effects of different microplastics on the physicochemical properties and microbial diversity of rice rhizosphere soil

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 21, 2025

Biodegradable plastics, as alternatives to conventional waste are increasingly applied across various fields. However, the ecological risks associated with widespread use of biodegradable plastics remain unclear. Additionally, tend age in environment, leading changes their physicochemical properties. The brought by aging microplastics have also been scarcely studied. In this study, we selected (PE-MPs), (PLA-MPs), and aged (aging-PLA-MPs) explore effects on rhizosphere soil environment rice. results showed that reduced N P content, PE slightly increasing DOC while PLA aging-PLA significantly increased 21.13 24.04%, respectively. Microplastics decreased enzyme activity, having a somewhat stimulatory effect activity compared PLA. Furthermore, bacterial diversity index altered community structure dominant species, content FDA hydrolase being main factors influencing community. Bacteria were most sensitive PLA, stability microbial network decreased, although negative impact This study contributes our understanding posed processes environment.

Language: Английский

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Temperature and precipitation effects on soil nitrogen availability and cycling in Chinese fir plantations across subtropical China

CATENA, Journal Year: 2025, Volume and Issue: 251, P. 108830 - 108830

Published: Feb. 16, 2025

Language: Английский

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Nitrogen addition increases the glucose-induced priming effect of the particulate but not the mineral-associated organic carbon fraction

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 184, P. 109106 - 109106

Published: June 19, 2023

Nitrogen availability affects the mineralization of soil organic matter differently depending on type and layer. It is unknown whether such differences result from different responses individual carbon fractions to N supply. This study examined priming effect (PE) decomposition particulate (POM) mineral-associated (MAOM) in response addition. Two soils, one a woodland other cropland, were fractionated obtain two POM differing C:N ratio MAOM mineral C protection. each incubated for 14 days after initial supply 13C-glucose Ca(NO3)2 at 0, 20 60 mg kg−1. Glucose addition induced stronger PE per unit than POM, particularly (6.2 vs. 0.8 g−1 C). The glucose-stimulated increases abundances bacteria, fungi, four functional genes (LMCOs, ureC, npr chiA) also larger POM. was similar (C:N 11.6–12.4) soils not affected by By contrast, increased 21.6) (e.g., 7-fold kg−1), along with marked genes, fungi bacteria. Compared soil, kg−1 cropland 16.9) stimulated lesser extent (by 30%). These results suggest that input may have greater potential stimulating higher proportion ratio.

Language: Английский

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Bacteria life-history strategies and the linkage of soil C-N-P stoichiometry to microbial resource limitation differed in karst and non-karst plantation forests in southwest China

CATENA, Journal Year: 2023, Volume and Issue: 231, P. 107341 - 107341

Published: June 27, 2023

Language: Английский

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