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cje ›› 2005, Vol. ›› Issue (5): 573-577.

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Advances in studies on dissolved organic nitrogen in terrestrial ecosystems

LIU Yan1,2, ZHOU guoyi1, LIU Juxiu 1   

  1. 1. South China Botanical Garden, Chinese Academy of Sciences, Guang Zhou 510650, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-04-20 Revised:2004-08-03 Online:2005-05-10

Abstract: Due to its active and effective character,dissolved organic nitrogen (DON) plays an important role in the terrestrial nitrogen cycle.The paper summarized the origin,property and flux of dissolved organic nitrogen in terrestrial ecosystems.Some suggestions for further study were put forward,which included,the assessment of hydrological process controls on the release and retention of DON in terrestrial ecosystems; quantification of sources and sinks of DON in terrestrial ecosystems; the ecological significance of DON in mineralization,immobilization,leaching and plant uptake process; differences in the dynamics of DON and DOC;and the relationship between DON and plant nutrition and carbon accumulation.

Key words: Water stress, Sandy land, Pinus sylvestris var mongolica, Seed germination, Polyethylene glycol

CLC Number: