Review of Nitrogen Cycle in Plant-soil System Based on Application of 15N Tracer Technique

Abstract:

The isotope tracer technology is a kind of method by adding exogenous elements or substance as a tracer co-operating in organism completely, which used to indicate the change process of elements or substance in organism. Nitrogen stable isotope tracer technology can reveal essentially the mechanism of ecological process, so it becomes one of important tools for ecology research. In order to understand the advances in application of nitrogen stable isotope technique in nitrogen cycle of plant-soil system, nitrogen cycle based on ¹⁵N tracer technique was reviewed. The nitrogen stable isotope technique in solving ecology problems was prospected and some existing shortcomings are also discussed.

Key words:¹⁵N tracer technique;Plant-soil system;Nitrogen cycle;Review