Prioritizing eco-environmental conservation and green development Origins of environmental history and its development Report on Yellow River conservancy and green development 并列题名：Origins of environmental history and its development ASEAN-China urban environmental protection and sustainable development 并列题名：Research report on ecological civilization and green development Research report on ecological civilization and green development China's marine conservation and development Research on the effect of environmental regulation on green development efficiency 并列题名：ASEAN-China urban environmental protection and sustainable development