Study On The Environmental Backgroud Values Of Soils In Ebinur Lake Basin

Today, everyone says that we should protect the environment, we must protect the soil which we livelihood generation by generation certainly, but naturally, the study on the environmental background values of soils must be the advanced step for the foundation work. We have made detailed investigation with the soils in Ebinur Lake basin, in where we have digged 50 soil profiles all in the depth of 0 to 120 centimeters and have gathered 290 soil samples at the same time. With these data, we completed 11 testing protects about the element that must be test and the physics and chemistry nature using the chemical analysis method. Therefore, we obtained 8 kind of environmental background values of soils. Obtained the reliable data firstly as the foundation step, then we made our data processing using the mathematics statistical method in SAS software's. Combining the geochemistry and the science of soil, we attempt to explore the differential rules in the environmental background values of soils in Ebinur Lake basin, and attempt to seek for the generalized analysis about the major effect factors with the environmental background values of soils.The conclusions are as follows:1.There are 9 kinds of elements about Cd,Co,Cr,Cu,Mn,Pb,V,Zn,Ni for the test about the environmental background values of soils in Ebinur Lake basin. The background values of these elements are contrast to those of the corresponding elements in the whole world and that of in China. Element Cu,Mn,Ni,Pb are lower while Cd,Co,Cr,Zn are higher and V is close to that contrast to the world's elements level; but contrast to China, the results shows that element Ni,Pb are lower while Cd,Co,Cr,Zn,Mn,V are higher. Overall, it shows that Ni,Pb are lower than all.2. Through the element T-test, it shows that the results all achieved remarkable levels. The distributed characteristics about the environmental background values of soils in Ebinur Lake basin present a kind of elevates tendency gradually from east to west in the basin;The meadow background value is relatively higher, but the salt alkaloid area element background value content is relatively low.3. In different soil types, besides Cd other soil elements'content is low in the bog earth, the ash brown desert , but besides Pb other soil elements'content is high in the marly soil, the meadow soil, the chap, while the elements'content is middle in the forest fills the meadow soil, the wind sandy soil. Therefore the performance for changes in a big way besides the individual element in the individual soil type, the most elements in the different soil type's quality score's changes are not big. But what has the remarkable obvious characteristic is the element Ni only, its content is zero. On the statistics unit of the administrative regionalization, although it is not the determining factor, but the distribution of the soil background value in its performances that in Tuoli area is to be higher than that of in Wenquan area and generally to be higher than that of in Bole area, while the element content in Jinghe County region is lowest, which related to the soil types in this region and the altitude also.4.Generalized analysis the element's condition in each kind of soil types about the environmental background values, we may see that the characteristic of migration or accumulation with the element background values which displays in different soil level, and it has the close relationship with the soil type. It shows extremely intense migration characteristic in surface soil about the element background value in Ebinur Lake basin.5. Overall, element V mainly assumes the normal distribution that mainly comes from the soil element which the soil parent material produces differently; on the other hand some elements like Pb, Cu, Zn, Cd and etc. which are intense influenced by the extraneous source generally presents skewness distribution, and on the whole their content are been quite complex in the soil distributed characteristic.6. The element content relates closely with the organic matter and lower obvious with the pH value. Besides elements Cd, other 7 kinds of elements are related with the organic matter quality score, but only elements Cd, Cr, Pb, Zn is related to the pH value.7. In these 8 elements, only elements Cu, Zn's contents are higher in subsoil level than that of in surface soil level, they performance to migrate to be the result of deposition in lower midsoil layer. And for these 8 elements, there are elements being intimate with iron like Co,Cr,Mn,V, while some elements being intimate with sulphur like Cd,Cu,Pb,Zn.On the whole, they have certain relevance, but the former performances the relevance many.8. There are both common and different distribution rule in the environmental background values of soils. The common nature is: 1).It shows a kind of region differentiation rule about the environmental background values of soils under the controls of the determined factor like the soil type, like the Ebinur Lake basin in this study;2). Each soil element presents the pH differentiation rule during different level in soil profile's, its difference displays in the region differentiation rule of different soil element.