The potential bias of nitrogen deposition effects on primary productivity and biodiversity

The potential bias of nitrogen deposition effects on primary productivity and biodiversity

© 2022 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 29(2023), 4 vom: 20. Feb., Seite 1054-1061
1. Verfasser: Ke, Yuguang (VerfasserIn)
Weitere Verfasser: Yu, Qiang, Wang, Hongqiang, Zhao, Yi, Jia, Xiaotong, Yang, Yadong, Zhang, Yunlong, Zhou, Wei, Wu, Honghui, Xu, Chong, Sun, Tao, Gao, Yingzhi, Jentsch, Anke, He, Nianpeng, Yu, Guirui
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article community composition ecosystem function grassland nitrogen addition soil acidification species richness Nitrogen N762921K75 Soil
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520 |a Atmospheric nitrogen (N) deposition is composed of both inorganic nitrogen (IN) and organic nitrogen (ON), and these sources of N may exhibit different impacts on ecosystems. However, our understanding of the impacts of N deposition is largely based on experimental gradients of INs or more rarely ONs. Thus, the effects of N deposition on ecosystem productivity and biodiversity may be biased. We explored the differential impacts of N addition with different IN:ON ratios (0:10, 3:7, 5:5, 7:3, and 10:0) on aboveground net primary productivity (ANPP) of plant community and plant diversity in a typical temperate grassland with a long-term N addition experiment. Soil pH, litter biomass, soil IN concentration, and light penetration were measured to examine the potential mechanisms underlying species loss with N addition. Our results showed that N addition significantly increased plant community ANPP by 68.33%-105.50% and reduced species richness by 16.20%-37.99%. The IN:ON ratios showed no significant effects on plant community ANPP. However, IN-induced species richness loss was about 2.34 times of ON-induced richness loss. Soil pH was positively related to species richness, and they exhibited very similar response patterns to IN:ON ratios. It implies that soil acidification accounts for the different magnitudes of species loss with IN and ON additions. Overall, our study suggests that it might be reasonable to evaluate the effects of N deposition on plant community ANPP with either IN or ON addition. However, the evaluation of N deposition on biodiversity might be overestimated if only IN is added or underestimated if only ON is added 
650 4 |a Journal Article 
650 4 |a community composition 
650 4 |a ecosystem function 
650 4 |a grassland 
650 4 |a nitrogen addition 
650 4 |a soil acidification 
650 4 |a species richness 
650 7 |a Nitrogen  |2 NLM 
650 7 |a N762921K75  |2 NLM 
650 7 |a Soil  |2 NLM 
700 1 |a Yu, Qiang  |e verfasserin  |4 aut 
700 1 |a Wang, Hongqiang  |e verfasserin  |4 aut 
700 1 |a Zhao, Yi  |e verfasserin  |4 aut 
700 1 |a Jia, Xiaotong  |e verfasserin  |4 aut 
700 1 |a Yang, Yadong  |e verfasserin  |4 aut 
700 1 |a Zhang, Yunlong  |e verfasserin  |4 aut 
700 1 |a Zhou, Wei  |e verfasserin  |4 aut 
700 1 |a Wu, Honghui  |e verfasserin  |4 aut 
700 1 |a Xu, Chong  |e verfasserin  |4 aut 
700 1 |a Sun, Tao  |e verfasserin  |4 aut 
700 1 |a Gao, Yingzhi  |e verfasserin  |4 aut 
700 1 |a Jentsch, Anke  |e verfasserin  |4 aut 
700 1 |a He, Nianpeng  |e verfasserin  |4 aut 
700 1 |a Yu, Guirui  |e verfasserin  |4 aut 
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773 1 8 |g volume:29  |g year:2023  |g number:4  |g day:20  |g month:02  |g pages:1054-1061 
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