Elevational Patterns of Soil Nitrogen Forms and Transformations in the Southeastern Qinghai–Xizang Plateau DOI Creative Commons
Siyi Liu, Chuanhong Li, Lin Zhang

и другие.

Ecosystem Health and Sustainability, Год журнала: 2024, Номер 10

Опубликована: Янв. 1, 2024

Alpine forest soil in the southeastern Qinghai–Xizang Plateau plays a crucial role regional and global climate biogeochemical cycles, yet elevational distribution of nitrogen (N) availability losing risk is unresolved. In this study, we characterized N composition key transformation processes across different elevations 3 typical mounts Plateau. contrast to previous suggestions, total ammonium are found accumulate high elevation zones. This accumulation at higher altitudes due consistent net mineralization rate coupled with an extremely low nitrification rate, which suppressed by pH moisture Moreover, elevated rates biological fixation along further contribute regions acid-tolerant Bradyrhizobium , plant-associated Herbaspirillum Klebsiella identified as diazotrophic microbial taxa responsible for active fixation. Collectively, our results suggest that NH 4 + -N altitude zone ubiquitous phenomenon southeast Plateau, lower being enabling occurrence.

Язык: Английский

Elevational Patterns of Soil Nitrogen Forms and Transformations in the Southeastern Qinghai–Xizang Plateau DOI Creative Commons
Siyi Liu, Chuanhong Li, Lin Zhang

и другие.

Ecosystem Health and Sustainability, Год журнала: 2024, Номер 10

Опубликована: Янв. 1, 2024

Alpine forest soil in the southeastern Qinghai–Xizang Plateau plays a crucial role regional and global climate biogeochemical cycles, yet elevational distribution of nitrogen (N) availability losing risk is unresolved. In this study, we characterized N composition key transformation processes across different elevations 3 typical mounts Plateau. contrast to previous suggestions, total ammonium are found accumulate high elevation zones. This accumulation at higher altitudes due consistent net mineralization rate coupled with an extremely low nitrification rate, which suppressed by pH moisture Moreover, elevated rates biological fixation along further contribute regions acid-tolerant Bradyrhizobium , plant-associated Herbaspirillum Klebsiella identified as diazotrophic microbial taxa responsible for active fixation. Collectively, our results suggest that NH 4 + -N altitude zone ubiquitous phenomenon southeast Plateau, lower being enabling occurrence.

Язык: Английский

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