Hun River Basin Of Dahuofang Reservoir Hydro-fluctuation Belts Heavy Metal Pollution And Nutritional Characteristics Research

As the alternation of wetting-dry ecological regions, Hydro-Fluctuation Belt in the reservoir is the highly ecological-sensitive areas in study. Da Huo Fang reservoir is one of the largest water sources in China. About the study of the contend of heavy metal in the soil, the water and the air, and the contend of organic matter of soil in the Hydro-Fluctuation Belt of Da Huo Fang reservoir, has great significance in against environmental pollution.Through the detection and analysis to content Cd, Pb, Zn, Cu, Hg, effective nitrogen, effective carbon, effective phosphorus in the soil,the water and the air of 10 sample points, we can see that in the water near Hydro-Fluctuation Belt, the content of Cd, Pb, Cu, Zn and Hg is low, and the water belongs to the two national water quality standards.In the deposit sediment in the Hydro-Fluctuation Belt of Da Huo Fang Reservoir, the content of Cd and Pb is higher than sedimentation value of Liaohe river system and soil background value of Liaoning province, while the content of Cu, Zn, Hg is lower.The order of heavy metal accumulation degree in the Hydro-Fluctuation Belt of Da Huo Fang Reservoir is Pb, Hg, Cd, Zn, Cu. There is no noticeable trend of the content of the heavy metals in different depth. The content of atmospheric mercury has an important influence on the accumulation of mercury in soil.Through the potential ecological risk index evaluation method and geological accumulation to the value analysis, Cu, Zn and Hg have a slight damage to the ecological environment, while the potential ecological risk index of Cd is higher. The order of pollution level is: Cd, Pb, Zn, Cu, Hg.Heavy metal accumulation in the Hydro-Fluctuation Belt of Da Huo Fang Reservoir is related to the content of organic matter in soil.The main pollution source of Da Huo Fang reservoir area comes from the factory and urban production and life, mass tourism and mine development. Therefore, we can optimize mineral processing technology and increase the environmental protection consciousness to improve and better the reservoir environment.