大气硫循环中的自然硫释放研究

基于当前可获得的与该课题相关资料 ,综述了陆地生态系统对全球硫总量的贡献。第 1部分阐述了已熟知的自然硫源——海洋硫循环的了解。第 2部分给出了陆地硫循环的基本情况及各化学组分和源的相对重要性。第 3部分给出以前报导的各硫源的几种主要含硫气体的通量值 ,通过比较推导出对应各环境的代表性硫通量值。最后的第 4部分作为总结讨论了克服早先自然生态系统硫循环研究测定中的各种局限的方向并提出建议。

Research on Natural Emission into the Atmospheric Sulfur Cycle

Based on the currently available database,significance of terrestrial ecosystems in the global sulfur budget is reviewed.The well-understood natural sulfur cycle in relation to oceanic environment,the well-known natural reservoir,is described in section 1.Section 2 gives a fundamental picture of the terrestrial sulfur cycle with respect to the relative importance of its individual chemical components and of its source.In section 3,previously reported flux values of several major sulfur gases are presented for each reservoir and are intercompared to derive representative fluxes for the respective environment.Finally,as conclusion and suggestion,the paper discusses the direction towards overcoming various problems encountered in measurements relating to the natural sulfur cycle in diverse natural ecological systems.