The Local Organizing Committee and the International Association of Volcanology and Chemistry of Earth′s Interior (IAVCEI) will be pleased to welcome you to the 6th International Maar Conference (IMC) in Changchun (China) in 30 July–3 August, 2016. The Conference will have 4 days of themed oral and poster sessions and an intra-meeting field trip. The proposed sessions of the conference focus on Maar and Environment Change, covering a wide spectrum of very interesting topics including characteristics, mechanism, modeling and geological background of Monogenetic volcanic activities; volcanic evolution and spatial distribution regulation, resources, disaster, detecting, monitoring and societal responses of volcanic activity.