| A series of ecology, society and economy issues from the discards of mine developing and utilizing has already become the focus of environment and development. According to the angle of soil ecology and restoration ecology, the characteristics of degeneration ecosystem on the slag wastelands have described. And then, the difference of soil physical and chemical properties between soil in the vicinity of root of re-vegetation and the slag wasteland are compared. More over the difference on accumulating amount of heavy metals between re-vegetation and the tree without polluted was studied too. The main results of research are as follows:The soil characteristic was investigated and analyzed in the slag wasteland of Xiangtan Manganese Mine. The basic physical and chemical properties of the tailing wastelands were as following: (1) The soil texture in the slag wasteland is mainly sandy soil with a little stone. (2)The soil moisture , soil bulk density and total capillary of slag wasteland is 17.79%,1.44g/cm~3, 45.24% respectively. (3) Soil pH is 7.49 in the slag wasteland. The average contents (g/kg) of organic matter, total N, total P, total K, total Ca and total Mg in the slag wasteland are 18.683, 1.37, 1.01, 4.41, 14.97 and 3.79 respectively. (4)The average contents (mg/kg) of Mn, Cu, Pb, Zn ,Cd, Ni in soil collected from the slag wasteland of Xiangtan Manganese Mine are 77990.21,66.38, 401.15, 640.32, 13.15 and 91.33 respectively. The average contents of heavy metals in soil collected from the slag wasteland in the following order: Mn>Zn>Pb>Ni>Cu>Cd. The content of Mn, Cu, Pb, Zn ,Cd and Ni are 18.59,1.32,4.10, 4.66, 4.44 and 3.16 times of the contrasting area respectively.Before the re-vegetation, the soil fertility composite index of slag wasteland is 8 and the contrasting area is 12 by assessment on the soil resource. The main factors that influence the soil fertility are soil disposition and soil nutrient. Individual event pollution index of 6 kinds of heavy metals by three different background values are all greater than 2, which shows the soil has been contaminated, and Mn, Pb, Cd are the most serious among these heavy metals. And the comprehensive pollution index are all greater than 3, which shows the pollution grade of the soil reaches five grade heavy pollution. So soilamelioration and the selection of tolerant species are applied in the process of the re-vegetationConcerned on the soil density.and soil total capillary, there are remarkable difference between soil in the vicinity of root of re-vegetation and contrasting area and slag wasteland. It indicated that loosen the soil has reduced the soil density, increased the soil total capillary and improved the soil structure. The difference of soil PH value and the average content of N, P, Ca between slag wasteland and contrasting ground is remarkable, but it is not remarkable between slag wasteland and soil in the vicinity of root of re-vegetation. It proved that the soil chemical properties can not be improved obviously in a short time, the metallic content of different soil has the same order: the slag wasteland >soil in the vicinity of root of re-vegetation > contrasting area .Besides Cu and Ni, the average content of Mn, Pb, Zn and Cd in the vicinity of root of re-vegetation and contrasting area is remarkable different from slag wasteland. The results show that after re-vegetation and soil amelioration, the average content of soil heavy metals in the vicinity of root of re-vegetation fall to some extent.Based on the comparison of soil physical and chemical properties of the same kind of re-vegetation {Koelreuteria paniculata and Elaeocarpus decipiens), there is not marked difference in soil physical properties, soil nutrient and content of soil heavy metals between survival and dead vegetation in the vicinity of root of the same kind of re-vegetation. The results shows that the reason why re-vegetation died is unconnected with soil, maybe relate to the plant itself or some other reasons.The soil on the re-vegetation growing better and worse was investigated. The results show that the growing-state of re-vegetation relates to the content of soil heavy metals, but unconnected with soil structure and soil fertility.It is indicated that Koelreuteria paniculata accumulates Mn, Elaeocarpus decipiens accumulates Pb and Zn.
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