气候变化及人类活动对河流溶解性有机质(DOM)影响的研究进展

Research Advances in Climate Change and Human Activities on Riverine Dissolved Organic Matter(DOM)

气候变化与人类活动对河流溶解性有机质(DOM)产生了重大影响,探讨和区分二者的影响是水科学、环境科学重大热点问题。针对气候变化(降雨、径流、气温)和人类活动(土地利用方式、城镇化、水利工程建设等)两个驱动因子,介绍了河流DOM来源和特征;分别综述了气候变化、人类活动和两者综合对河流DOM影响的研究进展;归纳了目前关于气候变化和人类活动对河流DOM影响的已有研究方法,并总结了方法中的问题及不足。提出当前研究中所存在的水文气候和人类活动情景交叉重复、缺乏对河流DOM转化机理研究和与生源要素耦合模型研究等问题。

Both climate change and human activities have great effects on riverine dissolved organic matter（ DOM）. How to estimate and distinguish the influences arose from these two driving factors has been the focus of attention in hydrologic science and environmental science. In view of climate change（ rainfall, runoff,temperature） and human activities（ land use,urbanization,hydropower construction）,three aspects of the research have been concluded as following. The origin and characteristics ofriverine DOM has been introduced.The research progress on the effects of climate change,human activity and the combination of the two on riverine DOM have been reviewed respectively. The existing research methods on the effects of climate change and human activities on riverine DOM have been summarized. The current existing research methods of climate change and human activities on the riverine DOM has been generalized,and the problems and deficiencies in the methods have been listed as well. Finally,based on current research contents,the problem of overlap between climate scenarios and human activity scenarios and also the lack of research on the mechanism of river DOM transformation and the coupling model with biogenic factors are summarized and discussed.