Grazing regimes alter the fate of ¹⁵N‐labeled urea in a temperate steppe

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(15), P. 4472 - 4483

Published: Aug. 4, 2024

Abstract Clarifying the fate of different nitrogen (N) species in pools terrestrial ecosystems is a prerequisite for comprehensive understanding influence human activities on N cycle. Grazing has always been an important way grassland management centuries temperate grasslands North China. However, how grazing regimes affect urea derived from livestock plant–soil systems grazed remains poorly understood. Therefore, situ three‐factor (grazing regime, soil depth, and sampling time) 15 N‐labeling experiment steppe was conducted to answer this question. After 48 days labeling, recovered shoots under no (7.3% ± 1.8%) approximately 2.3 times that rotational (3.2% 0.4%) 2.5 continuous overgrazing (2.9% 0.5%). More roots than (19.8% 2.4% vs. 10.4% 0.5%, respectively), indicating could promote more retention roots. lower (23.7% 2.0%) (42.0% 5.6%). Additionally, reduced magnitude active pool microbial biomass soluble relative grazing. The would have significantly influenced both plants. That say, directly impacted plant growth, subsequently indirectly affected properties. Overgrazing often led excessive vegetation consumption, resulting decreased water content (SWC) organic carbon (SOC), ultimately caused alterations composition. within system notably compared Continuous shift dominant Leymus chinensis Stipa grandis , by decreasing proportion perennial grasses 10%, increasing annual biennial plants 8%. also altered response variations regimes. Consequently, recovery In conclusion, reduces steppe, preferable over as it higher ecosystems.

Language: Английский

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Light grazing increased but heavy grazing decreased the abundance and family richness of soil arthropods community in an alpine grassland in the Qinghai Lake Basin

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177549 - 177549

Published: Nov. 18, 2024

Language: Английский

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Destabilized bacterial and fungal network weakens soil multifunctionality under increasing grazing stress

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 206, P. 105827 - 105827

Published: Dec. 18, 2024

Language: Английский

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Synergy and trade-off between plant functional traits enhance grassland multifunctionality under grazing exclusion in a semi-arid region

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 373, P. 123877 - 123877

Published: Dec. 28, 2024

Language: Английский

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