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Oasis in the arid, semi-arid areas, drought, fragile ecological environment, soil salinization is more prevalent. The process of soil salinization and desertification process accompanied by students, even with each other to promote mutual transformation. Therefore, soil salinization Hetian oasis of sustainable economic development and ecological security has become a major threat. Typical region in Yutian Oasis - Kalk Township for the study area, the law of the spatial variation of soil salinity in this area. Emplaced in the study area, 61 samples measured soil layers (0-5cm ,5-10cm ,10-20cm ,20-30cm ,30-50cm ,50-70cm ,70-100cm) soil salt content and eight ions (Cl-, SO42-, CO32-, HCO3-, Ca2-, Mg2-, K Na). Use of statistical software ArcGIS mapping software AutoCAD law analysis of the spatial variation of soil salinity of the study area. Unobserved samples of soil salinity and ion Kriging interpolation method of optimal estimation and mapping software to map out the spatial distribution of soil salt content, chemical type and salinization extent, more intuitive reflects the soil in the study area salt content, chemical type and salinization of the spatial distribution of the law, through the analysis, the results were as follows: 1) the study of the study area, soil salinity variability. Found that the percentage change of the surface soil salinity in the study area, more than 20cm soil salinity variations significantly higher than the other layers. Little difference of less than 20cm of soil salinity variations. Soil salinity from the surface down, all showed strong variability. 2) on the space distribution of soil salinity eigenvalue analysis. :0-5cm layer of soil salinity showed a strong spatial correlation from the the semivariogram various parameters; 5-10cm ,10-20cm ,20-30cm ,70-100cm soil salinity showed moderate-intensity spatial correlation; 30-50cm, 50-70cm layer of soil salinity spatial correlation is weak. 3) The distribution pattern of soil salt content space analysis. On the level of the east-west direction, the distribution pattern of the upper soil (30cm above soil) salinity level distribution pattern: first increases and then decreases, then increases, and then decreases; deeper soil layer (30cm): from east to west, gradually reduced. On the north-south direction, the distribution law: on both sides of soil salinity intermediate salinity is low, U-shaped distribution. The vertical distribution law: the general trend of soil salinity or decreases, the vertical distribution of low dense grass and farmland salinity change, almost in a straight line. 4) the classification of soil salinity chemical type and draw maps. Found that the distribution of chemical soil salinity in the study area: the surrounding soil salinity mainly NaCl inclusions NaSO4; central region of the southern soil salinity mainly CaSO4, CaCl2 mainly northern MgSO4, MgCl2. 5) the classification of the study area, the degree of soil salinization, and draw maps. Distribution laws: around the study area, heavier, and to a lesser extent of the central region of salinization of soil salinization. The saline soil patchy, are distributed throughout the study area. 6) Draw a spatial distribution map of the study area, soil salt content and analysis. Found that the north side of the salt content of the study area is greater than the south side, and all sorts of party differences in salt content gradually decreases with increasing depth; vertical variations of soil salinity is the west side is greater than the east side of the central region of farmland soil salinity with depth increased first decreases after a small increase. In this paper, statistical software and GIS software of space sampled soil salinity, the differentiation of the analysis, and by analyzing the results of the study area using AutoCAD to draw the space distribution of soil salinity Figure, which is further salinization in this area The research provides the foundation. And the soil salinization improved and well and canal construction provides a theoretical basis.
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