Data/hora: 09/06/2024 07:24:20

Provedor de dados: | 53
País: | Brazil
Título: | Differential response of microbial respiration to supplied nitrogen forms in 3 contrasting alpine meadow soils on the Tibetan Plateau
Autores: | Zeng,Xiaoyang.
Data: | 2017-07-01
Ano: | 2017
Palavras-chave: | C cycling; Microbial activity; N deposition; Soil properties; High-altitude region.
Resumo: | ABSTRACT An incubation experiment was conducted to examine the effects of nitrogen (N) applications in different forms (NH4NO3, NH4Cl, and KNO3) on microbial respiration considering 3 different alpine meadow soils (C poor soil, pH = 8.1, 1.6% C; C moderate soil, pH = 6.0, 5.0% C; C rich soil, pH = 7.1, 7.4% C) in the Tibetan Plateau. The addition of NH4NO3 and NH4Cl increased the microbial respiration in C poor soil, but KNO3 had no effect. The inorganic N forms had no effects on C rich soil, but decreased microbial respiration in C moderate soil. Soil microbial respiration levels across the different types were ordered as follows: C poor soil &lt; C rich soil &lt; C moderate soil, regardless of N addition. These results suggest that the effect of N on microbial respiration in alpine meadow soils is more dependent on the initial soil pH than on soil C availability.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300416
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/1678-4499.139
Formato: | text/html
Fonte: | Bragantia  v.76 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess