Effects of nitrogen deposition on carbon cycle in terrestrial ecosystems of China: A meta-analysis. (November 2015)

• Record Type: Journal Article
• Authors: Chen, Hao; Li, Dejun; Gurmesa, Geshere A.; Yu, Guirui; Li, Linghao; Zhang, Wei; Fang, Huajun; Mo, Jiangming
• Is Part Of: Environmental pollution. Volume 206(2015)
• Page Start: 352
• Page End: 360
• Publication Date: 2015-11
• Subjects: Nitrogen deposition -- Carbon cycle -- Global change -- N-rich and N-limited ecosystems -- Meta-analysis -- China; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2015.07.033
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Nitrogen (N) deposition in China has increased greatly, but the general impact of elevated N deposition on carbon (C) dynamics in Chinese terrestrial ecosystems is not well documented. In this study we used a meta-analysis method to compile 88 studies on the effects of N deposition C cycling on Chinese terrestrial ecosystems. Our results showed that N addition did not change soil C pools but increased above-ground plant C pool. A large decrease in below-ground plant C pool was observed. Our result also showed that the impacts of N addition on ecosystem C dynamics depend on ecosystem type and rate of N addition. Overall, our findings suggest that 1) decreased below-ground plant C pool may limit long-term soil C sequestration; and 2) it is better to treat N-rich and N-limited ecosystems differently in modeling effects of N deposition on ecosystem C cycle. Graphical abstract: Highlights: Meta-analysis was used to address the effects of N addition on C cycle. N addition caused an large decease in belowground plant C pool. N-rich and N-limited ecosystems had different responses to N addition. Abstract : N addition caused a large decrease in below-ground plant C pool.