Nonlinear response of soil respiration to increasing nitrogen additions in a Tibetan alpine steppe

• Published in: Environmental research letters Vol. 12; no. 2; pp. 24018 - 24028
• Main Authors: Peng, Yunfeng, Li, Fei, Zhou, Guoying, Fang, Kai, Zhang, Dianye, Li, Changbin, Yang, Guibiao, Wang, Guanqin, Wang, Jun, Mohammat, Anwar, Yang, Yuanhe
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.02.2017
• Subjects: Anthropogenic factors; Atmospheric models; autotrophic respiration; Availability; carbon (C) cycling; Carbon cycle; Ecosystems; Environmental factors; Fertilization; heterotrophic respiration; Microorganisms; Multivariate statistical analysis; Nitrogen; nitrogen (N) input; Nonlinear response; Respiration; Soil temperature; Steppes; structural equation modeling (SEM); Terrestrial ecosystems; Terrestrial environments

Nitrogen (N) availability is a key regulator of carbon (C) cycling in terrestrial ecosystems. Anthropogenic N input, such as N deposition and fertilization, increases N availability in soil, which has important implications for an ecosystem's C storage and loss. Soil respiration (Rs), which is...