Soil Mineralogical Characteristics And Environmental Significance Of The Hebei Plain

The Hebei Plain is an important part of the North China Plain.It is located in the eastern part of North China,the East Bohai Sea,and the capital Beijing is at its center.Tianjin is located on the eastern coast of the Bohai Sea,with an area of?about 81,000 km~2.It has an advantageous geographical location and rich mineral resources.It is the most important in northern China.The economic center and agricultural base occupy an important position in the country.Based on a detailed study of the parent material,soil type,geomorphological characteristics,elemental characteristics and soil mineral characteristics of the Hebei Plain,the subject uses soil mineralogy,environmental mineralogy,geochemistry and other theoretical methods,by means of X-ray diffraction analysis,electron microscopy.,scanning electron microscopy and electron probe and other technical means,combined with ARCGIS,SPSS,COREDRAW and other analysis software,further study of elemental geochemical characteristics,soil minerals and elements,soil mineral distribution and distribution characteristics,soil minerals adsorption of heavy metals in Hebei Plain And the composition of minerals in the soil of heavily polluted areas,and discuss its environmental significance.The correlation between the main trace elements of soil minerals in Hebei Plain was studied and fitted into a linear regression equation.The results show that soil minerals have a good linear relationship with their chemical constituents and trace elements such as Mn,Ti and Zn,Cr and As.The data of the main trace elements in the soil of Hebei Plain were systematically compiled and integrated.The linear regression equations of soil minerals and chemical components were established by using ARCGIS and SPSS analysis software.The composition and distribution of soil minerals in Hebei Plain were analyzed,and the mineral distribution map was drawn.Studies have shown that soil mineral distribution has a certain genetic relationship with geomorphological characteristics and soil parent material.Distribution of heavy metal elements such as illite,kaolinite,chlorite and Cu,Pb,Zn,Co,Ni,Cr,Cd and As.The characteristics are roughly the same.Because clay minerals can adsorb heavy metal elements through adsorption,coordination and coprecipitation,clay minerals and heavy metal elements are consistent in distribution.Through the X-ray diffraction analysis of five typical soil samples,the main minerals in the soil are composed of quartz,feldspar,clay minerals and calcite.The soil is obtained by heavy mineral separation,scanning electron microscopy and electron probe experiments.The compositional characteristics of trace minerals.Among the heavy minerals,there are mainly quartz,feldspar,magnetite,hematite,gypsum,amphibole,etc.,and the well-formed cubic pyrite is also found.It may be formed in the soil environment,and the heavy metal sulfide in the soil.The bound state of the matter is relatively stable,and the toxic and harmful heavy metals in the sulfide minerals are not easy to enter the food chain,which can purify the soil and reduce the harm to humans.Through the research of this subject,the research content of soil mineralogy can be greatly enriched,and the influence of minerals on the environment,restoration,treatment,prediction,early warning,etc.can be studied from the perspective of mineralogy,so as to establish sustainable agriculture and protect the ecological environment.Provide scientific basis and technical support.