Wu Tong Ecosystem Of Heavy Metal Contamination And Migration

The paper chooses the artificial lake-ponds as the research object in the Chengdu economic zone, and research the distribution of Pb, Zn, Cu, Cd, As, Hg for its ecosystem,which reveals heavy metal migration regularities, and makes the synthesis appraisal to the heavy metal contamination level.Based on the study of the experiment data gathered from the study regions, this paper evaluates water quality by using the proved certain fuzzy mathematics evaluation, and estimates distribution characteristics and pollution level for heavy metals in the column sediments used the index of geoaccumulation, and makes out the evaluation for ecological harm of surface sediments by using the index of potential ecological risk, and analyze heavy metal pollution level in water biology by using stand comparison method, which reveals migration regulations of heavy metal for the artificial lake-ponds ecosystem and completely evaluates the pollution level of heavy metal.According to researching the pollution source of heavy metal-elements, this paper puts forward control policies and prevention measures for heavy metal pollution of the artificial lake-pounds, and offers scientific evidences for correlated departments preventing lake-ponds ecosystem from heavy metal polluting.