论文部分内容阅读
生物质燃烧释放的大量温室气体和烟尘气溶胶能够显著改变大气化学组成、扰动大气环流和水文过程、影响地表辐射平衡,是地球气候和环境过程的主要影响因素之一。生物质燃烧产生的烟尘颗粒等能够随大气环流过程进行迁移输送,在重力作用下或随降水过程沉降到地球表面,成为沉积物地球化学的重要组成部分。雪冰中诸如黑碳、钾离子、左旋葡聚糖等特征标志物记录能够较好地反映区域乃全球尺度的生物质燃烧信息。利用雪冰开展生物质燃烧现代过程和历史记录的研究对系统认识地球气候环境演变过程具有重要意义。从雪冰中可用于开展生物质燃烧记录研究的特征指标、不同地区的研究现状以及生物质燃烧的影响因素等方面综述了近20年来国内外的主要研究成果。并对当前在青藏高原地区利用雪冰开展生物质燃烧记录研究存在的主要问题以及未来研究工作的重点进行了探讨。
The large amount of greenhouse gases and soot aerosols released by biomass combustion can significantly change the chemical composition of the atmosphere, disturb the atmospheric circulation and hydrological processes, and affect the radiation balance on the earth’s surface. It is one of the major factors affecting the earth’s climate and environmental processes. Soot particles generated by biomass combustion can migrate and transport with the atmospheric circulation process and become an important part of geochemistry of sediments under the action of gravity or during precipitation. Snow ice features such as black carbon, potassium ions, levoglucosan and other signature records can better reflect the region is a global scale biomass combustion information. The research on the modern process and history record of biomass combustion using snow ice is of great significance for the system to recognize the evolution of Earth’s climate environment. The main research results at home and abroad in recent 20 years are summarized from the characteristics of snow ice, which can be used to carry out biomass burning record research, the status of research in different regions and the influencing factors of biomass combustion. At the same time, the main problems existing in the research of biomass combustion logging using snow ice in the Qinghai-Tibet Plateau are discussed as well as the focus of future research work.