Nitrogen deposition enhances accumulation of microbial and plant-derived carbon in forest soils: a global meta-analysis

Plant and Soil, Год журнала: 2024, Номер unknown

Опубликована: Апрель 30, 2024

Язык: Английский

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Microbial necromass carbon contributed to soil organic carbon accumulation and stabilization in the newly formed inland wetlands

Environmental Research, Год журнала: 2024, Номер unknown, С. 120397 - 120397

Опубликована: Ноя. 1, 2024

Язык: Английский

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Effects of Nitrogen Deposition and Precipitation Patterns on Nitrogen Allocation of Mongolian Pine (Pinus sylvestris var. mongolica) on Sandy Land Using 15N Isotope

Agriculture, Год журнала: 2024, Номер 14(8), С. 1367 - 1367

Опубликована: Авг. 15, 2024

In the context of global climate change, atmospheric nitrogen deposition is increasing, and precipitation patterns are becoming more variable. This study examines impact these changes on (N) allocation mechanisms in semi-arid region tree species using one-year-old Mongolian pine (Pinus sylvestris var. mongolica) seedlings. The seedlings were planted soil collected from Daqinggou Sandy Ecological Experiment Station (42°54′ N, 122°25′ E). Three moisture treatments applied (WC (normal moisture, approximately 65% ± 2.5% field capacity), WI (30% increased moisture), WD decreased moisture)), as well three (NC (no nitrogen), NL (5 g·m−2·y−1 NH (10 nitrogen)). sprayed with a 15N-labeled CH4N2O solution (46% 15N abundance 10.14%) pot trial, samples taken August October to measure N content seedling organs soil. Parameters such Ndff (%) (the percentage derived fertilizer), organs, absorption distribution ratio calculated. results showed that followed trend leaves > stems roots. Under treatments, ratios leaves, stems, roots 63.63–71.42%, 14.89–24.14%, 12.23–14.88% under low nitrogen, 62.63–77.83%, 13.35–22.90%, 7.31–19.18% high nitrogen. Significant correlations found among coefficients ranging 0.97 1.00. main effects their interaction, significantly impacted organs. Changes levels affected capacity pine. Increased enhanced all leading 62.63–71.42% being allocated maintaining an appropriate proportion stems. Nitrogen altered strategy different conditions reduced greater was captured by increase 4.98–5.77% compared control group, thereby mitigating adverse water deficiency. active accumulated limiting elements, 2.03–8.07% group. To achieve optimal strategy, moderate combined uptake provides scientific evidence for ecological restoration, wind erosion control, agricultural forestry management regions change.

Язык: Английский

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Simulated N deposition enhances recalcitrant POM occlusion in microaggregates within macroaggregates

Plant and Soil, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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