汞（Hg）的强毒性、生物富集性和异地沉降性，严重威胁环境和人体健康，已成为全球关注的共同环境问题。填埋场作为大气汞的重要人为释放源之一，如何有效的解析填埋场汞的迁移转化及释放规律，建立科学可靠的填埋场汞释放模型，是建立全球填埋场汞释放清单、准确评估填埋场汞污染风险、实现汞减排的重要理论依据。本课题通过系统研究汞在填埋场覆盖土-植被-大气中的传输、释放规律，阐明植被覆盖条件下的汞沉降机制，建立基于植被-覆盖土复合作用下的汞释放预测模型；为全球填埋场汞排放清单建立提供准确的基础数据，对于有效控制填埋场汞污染和提高我国在“汞外交”中话语权均具有重要的理论和现实意义。

Mercury poses a serious threat to the environment and human health because of its high toxicity, bioaccumulation and long-distance transmission, which has become a common environmental issue causing global concern. Landfill as one of important anthropogenic emission source of atmospheric mercury, how to analysis mercury migration, transformation and emission rule effectively, establish a scientific and reliable landfill mercury emission model are the fundamental to assess accurately the risk of mercury contamination in landfill, establish the global landfill mercury emission inventory and reduce mercury emission successfully..The objective of this study is to investigate mercury migration and transformation rule in cover soil-vegetation-air system, clarify mercury deposition mechanism of vegetation, establish the mercury emission model based on interactive mechanism of soil-vegetation, provide accurate basic data for global landfill mercury emissions inventory, which play an important theoretic and practical significance on the reduction of landfill mercury and raising Chinese voice in the “Mercury diplomacy”.