Most environmental risks have been recognized as top global risks in terms of their likelihood and impact (WEF in Global risks 2015. World Economic Forum, Geneva, 2015, The Global Risks Report 2016. World Economic Forum, Geneva, 2016). In recent years, environmental risks facing society are apparently systematic in nature and greatly impaired ecosystem and resulted in huge losses to socioeconomic domain (Briggs in Environmental health 7(1):1–17, 2008). Thus, integrated assessment of environmental risks is necessary for risk management.