Advances in studies on dissolved organic nitrogen in terrestrial ecosystems

Abstract

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:

X171.1

LIU Yan, ZHOU guoyi, LIU Juxiu . Advances in studies on dissolved organic nitrogen in terrestrial ecosystems[J]. cje, 2005, (5): 573-577.

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