Bai Yingchen

Natural organic matter and its significance in terrestrial surface environment

Natural organic matter is an important component in terrestrial surface environment. More and more researches indicated that it plays an important role in physical, chemical and biological processes of terrestrial ecosystem; it is the important cycling routes of matter and energy and relates with nearly all the important links of ecosystem. Natural organic matter is not only the important study field of biogeochemistry, ecology and environment sciences, but also a basic theoretical area in the assessment, prediction and control of environment pollution. Natural organic matter now becomes the focus of environment quality, toxicology, environment law and management. Using fresh lake and river as examples, this article briefly summarizes the study results of sources, chemical structure, cycling characteristics, coupling relations with nutrients cycling, and its effects on mobility and transformation of toxic metals and organic pollutants, and expounds the possible right research directions and contents referring to water eutrophication and environment pollution. This article also makes a prospect about modern organic environment and biogeochemistry.