氮沉降增加对森林碳汇功能的大小和稳定性具有重要影响。文中介绍了森林碳汇对氮沉降增加响应的研究进展,概述了同位素技术在该研究领域的应用前景,指出在沉降增加条件下森林光合产物分配和土壤碳周转速率变化将是未来森林碳循环研究的热点。 Increasing nitrogen deposition has an important effect on the size and stability of carbon sequestration in forests. In this paper, the research progress on the response of forest carbon sinks to nitrogen deposition is introduced. The application prospects of isotope techniques in this field are summarized. It is pointed out that the distribution of photosynthate and soil carbon turnover rate under the condition of increased deposition will be the future carbon cycle research Hot spots.