Effect of modification treatments on behaviour of heavy metals in combined polluted soil Tissue Distribution of 6 Kinds of Transport Heavy Metal Pollutants in Platanus hispanica Leaves and Annual Branches Soil physical and chemical properties of the wasteland in Xiangtan manganese mine Formation of iron plaque on root surface and its effect on plant nutrition and ecological environment Determination on residues of several heavy metal elements in Panax notoginseng and its cultivating soil Accumulation and Dynamic of Heavy Metal Elements in Rhizophora stylosa Community at Yingluo Bay in Guangxi Biological Cycles of Mineral Elements in a Young Mixed Stand in Abandoned Mining Soils