Plant and Soil

, Volume 380, Issue 1–2, pp 349–359 | Cite as

Combination of nitrogen deposition and ultraviolet-B radiation decreased litter decomposition in subtropical China

  • Xinzhang Song
  • Huiling Zhang
  • Hong Jiang
  • Changhui Peng
Regular Article



The interactive effects of enhanced nitrogen (N) deposition and ultraviolet-B (UV-B) radiation on litter decomposition are still unknown. The aims are to test whether the interactive effects of the two environmental factors on litter decomposition and nutrient loss are stronger than that of each factor alone.


Experiment included five treatments: elevated UV-B radiation (UV-B, 10 % enhancement), low N addition (N1, 30 kg N ha−1 year−1), high N addition (N2, 60 kg N ha−1 year−1), the two combined treatments of the two factors (UV-B+N1 and UV-B+N2), and an unmanipulated control.


The annual decomposition rates under combination of UV-B and N addition significantly decreased compared with that under UV-B and N additions for Pinus massoniana, and did also compared with that under UV-B but did not significantly differ with N additions for Cyclobalanopsis glauca. Negative effects of N additions alone on lignin degradation and P loss were partly offset but negative effect on N loss was further amplified when was combined with UV-B.


The combination of N deposition and UV-B radiation on litter decomposition and nutrient loss was significantly different from that of each factor alone without a general response pattern of decomposition, and was regulated by litter chemistry.


Interactive effect Environmental change Nutrient loss Photodegradation Subtropical China Pinus massoniana Cyclobalanopsis glauca 



This study was funded by the National Natural Science Foundation of China (Grant No. 31070440, 31270517), China QianRen Program, and Zhejiang Provincial Natural Science Foundation of China (Y5090007).


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Xinzhang Song
    • 1
  • Huiling Zhang
    • 1
  • Hong Jiang
    • 1
  • Changhui Peng
    • 2
  1. 1.The Nurturing Station for the State Key Laboratory of Subtropical SilvicultureZhejiang A&F UniversityLin’anChina
  2. 2.Institute of Environmental Sciences, Department of Biological SciencesUniversity of Quebec at MontrealMontrealCanada

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