NEIGAE OpenIR  > 湿地与全球变化学科组
Long-term phosphorus addition enhances the biodegradability of dissolved organic carbon in a nitrogen-limited temperate freshwater wetland
R. Mao, X. H. Zhang, S. Y. Li and C. C. Song; Mao R(毛瑢)
2017
Source PublicationScience of the Total Environment
Volume605Pages:332-336
AbstractPhosphorus (P) enrichment is expected to strongly influence dissolved organic carbon (DOC) biodegradation. However, the relationship between P availability and DOC biodegradation is largely unknown in nitrogen (N)limited ecosystems. Here, we investigated the changes in the ratio of DOC to dissolved total nitrogen (DTN), specific UV absorbance at 254 nm(SUVA(254)), and DOC biodegradation in surface water and soil pore water (0-15 cm depth) following eight years of multi-level P addition (0, 1.2, 4.8, and 9.6 g Pm-2 year(-1)) in an N-limited freshwater marsh in Northeast China. We found that P addition caused an increase in DOC biodegradation in surface water and soil pore water, irrespective of the P addition levels. Compared with the control treatment, the P addition rates of 1.2, 4.8, and 9.6 g Pm-2 year(-1) increasedDOC biodegradation by 20.7%, 15.2%, and 14.5% in surface waters, and 11.3%, 9.4%, and 12.0% in soil pore waters, respectively. The DOC biodegradationwas separately negatively correlated with the DOC: DTN ratio and SUVA(254), indicating that the positive effect of P addition on DOC biodegradation was caused by the elevated N concentration and the reduced DOC aromaticity. Our findings suggest that P enrichment enhances the biodegradability of DOC through increased N availability and altered DOC chemical composition, which would accelerate DOC loss from the waters and alter ecosystem C balance in N-limited temperate wetlands. (C) 2017 Elsevier B.V. All rights reserved.
DOI10.1016/j.scitotenv.2017.06.200
WOS IDWOS:000408275500036
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iga.ac.cn/handle/131322/7559
Collection湿地与全球变化学科组
Corresponding AuthorMao R(毛瑢)
Recommended Citation
GB/T 7714
R. Mao, X. H. Zhang, S. Y. Li and C. C. Song,Mao R. Long-term phosphorus addition enhances the biodegradability of dissolved organic carbon in a nitrogen-limited temperate freshwater wetland[J]. Science of the Total Environment,2017,605:332-336.
APA R. Mao, X. H. Zhang, S. Y. Li and C. C. Song,&毛瑢.(2017).Long-term phosphorus addition enhances the biodegradability of dissolved organic carbon in a nitrogen-limited temperate freshwater wetland.Science of the Total Environment,605,332-336.
MLA R. Mao, X. H. Zhang, S. Y. Li and C. C. Song,et al."Long-term phosphorus addition enhances the biodegradability of dissolved organic carbon in a nitrogen-limited temperate freshwater wetland".Science of the Total Environment 605(2017):332-336.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[R. Mao, X. H. Zhang, S. Y. Li and C. C. Song]'s Articles
[毛瑢]'s Articles
Baidu academic
Similar articles in Baidu academic
[R. Mao, X. H. Zhang, S. Y. Li and C. C. Song]'s Articles
[毛瑢]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[R. Mao, X. H. Zhang, S. Y. Li and C. C. Song]'s Articles
[毛瑢]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.