Pastureland Soil Organic Carbon Storage Regulated by Pasture Species and Age Under Nitrogen and Water Addition in Northern China DOI Creative Commons

Meji Cuo,

Lijun Xu,

Bo Yuan

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 399 - 399

Published: Feb. 2, 2025

Soil organic carbon (SOC) is a key indicator of soil quality and an important component the global cycle. Enhancing SOC through crop rotation promising strategy; yet, underlying mechanisms for accumulation remain unclear. This study aimed to evaluate effects different pasture age, species, irrigation, nitrogen (N) fertilization treatments on content storage in pastureland, analyzing below-ground biomass (BGB) data layers (0–10 cm, 10–20 20–40 40–60 cm) each treatment under three factors (pasture species (Bromus inermis, Medicago varia, 1:1 mixture), irrigation (CK, dry-season supplementation), N (0 kg hm−2 y−1, 75 150 y−1)), as well interaction these factors. Pasture water addition levels, age all had significant (p < 0.05) BGB. At 1–3, monocultured Bromus inermis was slightly higher than varia mixture, at 4–5, mixture were inermis. Among them, highest. 2–5, BGB pastureland significantly influenced by addition, age. Over 5-year period, SOCs surface layer fallowed cropland accumulated 32.35 Mg ha−1, showing very good sequestration effect; especially planting mixed more positive effect SOC. Therefore, low medium yielding fields China, according utilization target production cycle, purpose improving can be effectively achieved grass rotation.

Language: Английский

Pastureland Soil Organic Carbon Storage Regulated by Pasture Species and Age Under Nitrogen and Water Addition in Northern China DOI Creative Commons

Meji Cuo,

Lijun Xu,

Bo Yuan

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 399 - 399

Published: Feb. 2, 2025

Soil organic carbon (SOC) is a key indicator of soil quality and an important component the global cycle. Enhancing SOC through crop rotation promising strategy; yet, underlying mechanisms for accumulation remain unclear. This study aimed to evaluate effects different pasture age, species, irrigation, nitrogen (N) fertilization treatments on content storage in pastureland, analyzing below-ground biomass (BGB) data layers (0–10 cm, 10–20 20–40 40–60 cm) each treatment under three factors (pasture species (Bromus inermis, Medicago varia, 1:1 mixture), irrigation (CK, dry-season supplementation), N (0 kg hm−2 y−1, 75 150 y−1)), as well interaction these factors. Pasture water addition levels, age all had significant (p < 0.05) BGB. At 1–3, monocultured Bromus inermis was slightly higher than varia mixture, at 4–5, mixture were inermis. Among them, highest. 2–5, BGB pastureland significantly influenced by addition, age. Over 5-year period, SOCs surface layer fallowed cropland accumulated 32.35 Mg ha−1, showing very good sequestration effect; especially planting mixed more positive effect SOC. Therefore, low medium yielding fields China, according utilization target production cycle, purpose improving can be effectively achieved grass rotation.

Language: Английский

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