大气活性氮沉降临界负荷研究进展

氮沉降增加是全球变化最重要特征之一,它对全球尺度的粮食生产、碳氮循环及环境质量均具有重要影响,如何有效防控氮沉降增加已成为国内外关注的热点问题。氮沉降临界负荷作为描述生态系统不受氮沉降损害的特定数值,为氮沉降污染防治提供了有益参考。目前,国内外关于氮沉降临界负荷的研究已取得了较大进展,但尚缺乏对氮沉降临界负荷及其定量方法的系统总结。因此,本文总结了氮沉降临界负荷的研究方法以及这些方法在国内外典型生态系统的应用,探讨了该领域目前存在的问题及发展趋势,以期为今后开展相关研究工作提供参考和借鉴。

Research Progress on Critical Load of Nitrogen Deposition

Increasing nitrogen deposition is one of the most important characteristics of global change. It has an important impact on global food production, carbon and nitrogen cycles and environmental quality. How to effectively prevent and control the increasing in nitrogen deposition has become a hot issue in domestic and foreign research. The critical load of nitrogen deposition is used as a specific value to describe the ecosystem which is not damaged by nitrogen deposition, and it provides a useful reference for the prevention and control of nitrogen deposition. Although great progress has been made on the critical load of nitrogen deposition, there is still a lack of systematic summary of the current research status and mainstream development of the critical load of nitrogen deposition. Therefore, this article summarized the research methods of the critical load of nitrogen deposition and the application of these methods in typical ecosystems in the world, and discussed the current problems and development trends in this field. It is expected to provide reference for future related research work.