IGSNRR OpenIR  > 历年回溯文献
A global analysis of soil acidification caused by nitrogen addition
Tian D. S.; Niu, S. L.
Source PublicationEnvironmental Research Letters
2015
Volume10
Issue2
KeywordNitrogen Deposition Metal Cations Meta-analysis Soil Ph Terrestrial Ecosystem Acid Buffering Capacity Aluminum Toxicity Temperate Forests European Forests Organic-matter Metaanalysis Deposition Calcium Cations Plants Grasslands
AbstractNitrogen (N) deposition-induced soil acidification has become a global problem. However, the response patterns of soil acidification to N addition and the underlying mechanisms remain far from clear. Here, we conducted a meta-analysis of 106 studies to reveal global patterns of soil acidification in responses to N addition. We found that N addition significantly reduced soil pH by 0.26 on average globally. However, the responses of soil pH varied with ecosystem types, N addition rate, N fertilization forms, and experimental durations. Soil pH decreased most in grassland, whereas boreal forest was not observed a decrease to N addition in soil acidification. Soil pH decreased linearly with N addition rates. Addition of urea and NH4NO3 contributed more to soil acidification than NH4-form fertilizer. When experimental duration was longer than 20 years, N addition effects on soil acidification diminished. Environmental factors such as initial soil pH, soil carbon and nitrogen content, precipitation, and temperature all influenced the responses of soil pH. Base cations of Ca2+, Mg2+ and K+ were critical important in buffering against N-induced soil acidification at the early stage. However, N addition has shifted global soils into the Al3+ buffering phase. Overall, this study indicates that acidification in global soils is very sensitive to N deposition, which is greatly modified by biotic and abiotic factors. Global soils are now at a buffering transition from base cations (Ca2+, Mg2+ and K+) to non-base cations (Mn2+ and Al3+). This calls our attention to care about the limitation of base cations and the toxic impact of nonbase cations for terrestrial ecosystems with N deposition.
Indexed BySCI
Language英语
ISSN1748-9326
DOI10.1088/1748-9326/10/2/024019
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/38878
Collection历年回溯文献
Recommended Citation
GB/T 7714
Tian D. S.,Niu, S. L.. A global analysis of soil acidification caused by nitrogen addition. 2015.
Files in This Item: Download All
File Name/Size DocType Version Access License
Tian-2015-A global a(1424KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tian D. S.]'s Articles
[Niu, S. L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tian D. S.]'s Articles
[Niu, S. L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tian D. S.]'s Articles
[Niu, S. L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Tian-2015-A global analysis of.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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