Greenhouse Gas Emission, Carbon Footprint and the Ecosystem Carbon Budget of Sorghum Production: Replacing Chemical Fertilizer with Partial Manure in Saline Soils

Опубликована: Янв. 1, 2025

Excessive long-term application of synthetic nitrogen has resulted in serious environmental issues vulnerable ecosystems and contributed to global warming. The partial replacement N fertilizer with manure croplands provides an alternative agronomic strategy mitigate pressure on the ecological environment. Therefore, this study, we aimed evaluate effects longer-term substitution soil greenhouse gas emissions, carbon footprint (CF), budget. To end, established four treatments: no (control, N0), chemical (180 kg ha-1, N180), replaced aged cow at ratios 40% (OS40) 60% (OS60). Each treatment was applied sorghum under drip irrigation plastic mulching over two growing seasons. Greenhouse topsoil organic storage, CF, budget, were assessed using life cycle assessments balance calculations. results showed that, compared N180, OS40 OS60 increased cumulative CO2 indirect CO2-eq emissions reduced N2O CH4 emissions. Soil storage net primary productivity significantly enhanced those whereas these variables not different between OS60. ecosystem budget increasing ratio. A (108 ha-1 inorganic fertilizer, 72 fertilizer) selected as a suitable candidate for reducing CF promoting enrichment salt-affected soils.

Язык: Английский

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Optimal Level of Straw Addition After the Autumn Harvest for Black Soil Aggregate Stability

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

Опубликована: Фев. 10, 2025

ABSTRACT In Northeast China, straw residues are integrated into fields to improve the soil structure and fertility after autumn harvest. However, optimal amount of addition is unclear. To determine whether an increase in correlated with aggregate stability, study focused on black cropland was conducted through field incubation experiment (lasting 150 days) during seasonal freeze–thaw periods, implemented six different treatments: CK (0%), SA1 (1%, i.e., 10 g per kg soil), SA3 (3%), SA5 (5%), SA7 (7%), SA9 (9%). The results revealed that under conditions, stability significantly increased only when ≥ 5%. At this level, enhanced two ways. First, decomposition SOC content, which serves as a binding substance for aggregates promotes formation > 0.25 mm. Second, particles combined form straw‐soil composite macro‐aggregates exhibited high water stability. not positively amount. This because 5% sufficient reach carbon saturation, content showed no significant change further increasing addition. Moreover, excessive led nitrogen limitation slowed down rate but also wasted resources. Therefore, improving These findings provide theoretical basis how rational design return measures, thereby conditions spring sowing seedling emergence China.

Язык: Английский

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Two-five organic substitution of nitrogen with manure reduces yield-scaled footprint and enhances net ecosystem carbon budget of sorghum production in saline-alkali soils

Environmental Technology & Innovation, Год журнала: 2025, Номер unknown, С. 104212 - 104212

Опубликована: Апрель 1, 2025

Язык: Английский

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Effects of Modified Coal Gangue Addition on CO2 Release and Organic Carbon Sequestration in Shajiang Black Soil

Environmental Technology & Innovation, Год журнала: 2024, Номер unknown, С. 103872 - 103872

Опубликована: Окт. 1, 2024

Язык: Английский

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