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Zhuang, Liyan [VerfasserIn]; Liu, Qun [VerfasserIn]; Liang, Ziyi [VerfasserIn]; You, Chengming [VerfasserIn]; Tan, Bo [VerfasserIn]; Zhang, Li [VerfasserIn]; Yin, Rui [VerfasserIn]; Yang, Kaijun [VerfasserIn]; Bol, Roland [VerfasserIn]; Xu, Zhenfeng [VerfasserIn]

Nitrogen Additions Retard Nutrient Release from Two Contrasting Foliar Litters in a Subtropical Forest, Southwest China

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  • Medientyp: E-Artikel
  • Titel: Nitrogen Additions Retard Nutrient Release from Two Contrasting Foliar Litters in a Subtropical Forest, Southwest China
  • Beteiligte: Zhuang, Liyan [VerfasserIn]; Liu, Qun [VerfasserIn]; Liang, Ziyi [VerfasserIn]; You, Chengming [VerfasserIn]; Tan, Bo [VerfasserIn]; Zhang, Li [VerfasserIn]; Yin, Rui [VerfasserIn]; Yang, Kaijun [VerfasserIn]; Bol, Roland [VerfasserIn]; Xu, Zhenfeng [VerfasserIn]
  • Erschienen: MDPI, 2020
  • Erschienen in: Forests 11(4), 377 - (2020). doi:10.3390/f11040377
  • Sprache: Englisch
  • DOI: https://doi.org/10.3390/f11040377
  • ISSN: 1999-4907
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Litter decomposition plays a critical role in regulating biogeochemical cycles in terrestrial ecosystems and is profoundly impacted by increasing atmospheric nitrogen (N) deposition. Here, a N manipulation experiment was conducted to explore the effects of N additions (0 kg N ha−1 yr−1, 20 kg N ha−1 yr−1 and 40 kg N ha−1 yr−1) on decay rates and nutrients release of two contrasting species, the evergreen and nutrient-poor Michelia wilsonii and the deciduous and nutrient-rich Camptotheca acuminata, using a litterbag approach at the western edge of the Sichuan Basin of China. The decay rate and the mineralization of N and phosphorus (P) was faster in nutrient-rich C. acuminata litter than in nutrient-poor M. wilsonii litter, regardless of N regimes. N additions tended to decrease the decay constant (k value) in M. wilsonii litter, but had no effect on C. acuminata litter. N additions had no significant effects on carbon (C) release of both litter types. N additions showed negative effects on N and P release of M. wilsonii litter, particularly in the late decomposition stage. Moreover, for C. acuminata litter, N additions did not affect N release, but retarded P release in the late stage. N additions did not affect the C:N ratio in both litter types. However, N additions—especially high-N addition treatments—tended to reduce C:P and N:P ratios in both species. The effect of N addition on N and P remaining was stronger in M. wilsonii litter than in C. acuminata litter. The results of this study indicate that N additions retarded the nutrients release of two foliar litters. Thus, rising N deposition might favor the retention of N and P via litter decomposition in this specific area experiencing significant N deposition.
  • Zugangsstatus: Freier Zugang