PROGRESS IN GEOGRAPHY ›› 2013, Vol. 32 ›› Issue (2): 278-287.doi: 10.11820/dlkxjz.2013.02.014

• Original Articles • Previous Articles     Next Articles

Environmental behaviors of the persistent organic pollutants in forest ecosystem

XUE Yonggang1,2, GONG Ping1, WANG Xiaoping1, YAO Tandong1   

  1. 1. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, CAS, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-05-01 Revised:2012-11-01 Online:2013-02-25 Published:2013-02-07

Abstract: Persistent organic pollutants (POPs) are a series of persistent, semi-volatile compounds that are found throughout the global environment. Forest plays an important role in the environmental fate of POPs. Because of its high organic content, forest is regarded as a sink for POPs. The primary effect of forest is pumping chemicals from the atmosphere to the forest soil, which is called the "forest filter effect". POPs are exposed to various processes in forest, including adsorption in leaves, leaf litter and dry and wet deposition, and leaching or loss in soil. Some vegetation tissues, for example, pine needles, mosses and tree barks, are observed to accumulate POPs, and have been employed for monitoring regional and global distribution of POPs. This paper reviewed the progress on the above-mentioned scientific topics and discussed the overlooked topics in current researches. In addition, we pointed out the work needed for further studies on POPs, especially in forest of China.

Key words: dry/wet deposition, forest filter effect, litter, persistent organic pollutants (POPs), spatial distribution