Journal of Forestry Research

, Volume 29, Issue 6, pp 1657–1664 | Cite as

Effect of six years of nitrogen additions on soil chemistry in a subtropical Pleioblastus amarus forest, Southwest China

  • Guan-tao Chen
  • Li-hua TuEmail author
  • Guang-sheng Chen
  • Jin-yao Hu
  • Zhou-lin Han
Original Paper


Soil chemistry influences plant health and carbon storage in forest ecosystems. Increasing nitrogen (N) deposition has potential effect on soil chemistry. We studied N deposition effects on soil chemistry in subtropical Pleioblastus amarus bamboo forest ecosystems. An experiment with four N treatment levels (0, 50, 150, and 300 kg N ha−1 a−1, applied monthly, expressed as CK, LN, MN, HN, respectively) in three replicates. After 6 years of N additions, soil base cations, acid-forming cations, exchangeable acidity (EA), organic carbon fractions and nitrogen components were measured in all four seasons. The mean soil pH values in CK, LN, MN and HN were 4.71, 4.62, 4.71, and 4.40, respectively, with a significant difference between CK and HN. Nitrogen additions significantly increased soil exchangeable Al3+, EA, and Al/Ca, and exchangeable Al3+ in HN increased by 70% compared to CK. Soil base cations (Ca2+, Mg2+, K+, and Na+) did not respond to N additions. Nitrogen treatments significantly increased soil NO3–N but had little effect on soil total nitrogen, particulate organic nitrogen, or NH4+–N. Nitrogen additions did not affect soil total organic carbon, extractable dissolved organic carbon, incorporated organic carbon, or particulate organic carbon. This study suggests that increasing N deposition could increase soil NO3–N, reduce soil pH, and increase mobilization of Al3+. These changes induced by N deposition can impede root grow and function, further may influence soil carbon storage and nutrient cycles in the future.


Base cations Carbon fractions Nitrogen deposition Soil chemistry Soil acidification 



We thank Han Yuan, Xiao-fang Yang, Jia-lei Guo and Yi Cheng for conducting the soil analyses.


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Copyright information

© Northeast Forestry University and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Guan-tao Chen
    • 1
    • 2
  • Li-hua Tu
    • 2
    Email author
  • Guang-sheng Chen
    • 1
  • Jin-yao Hu
    • 1
  • Zhou-lin Han
    • 1
  1. 1.Ecological Security and Protection Key Laboratory of Sichuan ProvinceMianyang Normal UniversityMianyangPeople’s Republic of China
  2. 2.College of ForestrySichuan Agricultural UniversityChengduPeople’s Republic of China

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