【摘 要】
：
Human activities have contaminated large areas in both developed and developing countries.The contaminants have negative effects on the ecosystems and other natural resources and pose additional dange
【机 构】
：
Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;College of Life Science,A
【出 处】
：
第四届城市、工业、交通和矿山土壤国际会议(The 4th International Conference on Sol
论文部分内容阅读
Human activities have contaminated large areas in both developed and developing countries.The contaminants have negative effects on the ecosystems and other natural resources and pose additional danger to public health,as pollutants can enter food via agricultural products or leach out into drinking water.Phytoextraetion is a promising approach for cleaning up heavy metal contaminated soils.Non-ferrous metals mine areas are very good places for exploration of heavy metal tolerantor,accumulator or hyperaccumulator.Field investigation was conducted at zinc-lead mine areas in Zhejiang Province,and the dominant plants were collected,the Zn,Pb and Cd contents in shoots were determined.Hydroponics culture was also set up to confirm the metal tolerance and accumulation.Results showed that Fuyang ecotype of Sedum alfredii Hance,has high biomass and very high zinc tolerance,with high shoot concentrations,but does not achieve hyperaccumulation of Zn.Its shoot Cd concentration averaged 814 mg kg-1 when the nutrient solution Cd concentration was 50 μmoles per liter.Heavy metal hyperaccumulation and non accumulation ecotype were found 5 five years ago.This is the first time Zn,Cd tolerance and accumulation ecotype of Sedum alfrcdii was reported.It might be helpful for probing into the mechanism of Zn,Cd hyperaccumulation by Sedum alfredii plants.
其他文献
During the urbanization,different human activities,such as fossil fuel burning,waste combustion et al.,have changed the global carbon cycles andbudgets.This investigation selected the city of Nanjing,
The formerly light brown,sandy material which fills the spaces between single pavestones of new paved urban soils changes its color and properties due to incorporation of all kinds of urban dirt by ti
SUITMA soils are characterised by a multitude of different artificial materials (technogenic substrates) such as,for example,slags,ashes,refuse,coal mining waste,sludge and building debris (Meuser & B
With the rapid development of the industry after the second world war,many industrial sites have been identified that the soil or the groundwater under the sites have been contaminated by those toxic
Environmental pollution has posed an ever-increasing threat to the sustainable development and even to human health in China under the rapid economic growth and the lack of concomitant environmental p
The Korean War was broke out in 1950 and lasted for three years.At the end of the Korean War The Republic of Korea (ROK) and Democratic Peoples Republic of Korea (DPRK) government agreed to make a tru
Soils and plants contamination of arsenic and heavy metals was investigated from the vicinity of the typical nonferrous mines and smelters in Changsha,Zhuzhou,Hengyang,and Chenzhou districts,Hunan pro
Throughout the world,the oil industry generates highly polluted soils heavily contaminated with crude oil or petroleum residues generated by refinery activities.In partnership with the TOTAL company a
The paper highlights the problems of remediation of black earth sails at the gas industry facilities of the Russian South contaminated with HC condensate and methanol.Field tests have shown that HC de