articleEnvironmental Research LettersFeb 1, 2015GOLD OA

A global analysis of soil acidification caused by nitrogen addition

DTDashuan TianSNShuli Niu

Institute of Geographic Sciences and Natural Resources Research

Indexed incrossrefdoaj

Abstract

Nitrogen (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.…

Citation impact

1,148
total citations
FWCI
41.10
Percentile
100%
References
48
Citations per year

Authors

2

Topics & keywords

Topics
Keywords
  • Soil acidification
  • Soil pH
  • Soil water
  • Ocean acidification
  • Chemistry
  • Environmental chemistry
  • Abiotic component
  • Cation-exchange capacity
UN Sustainable Development Goals
  • Life in Land
No related works found for this paper.

Funding