Spatial Distribution Characteristics Analysis of Soil Salinity and Nutrition——lower reaches of the Bo,Jinghe river

This study based on small-scale makes the bo,jinghe river downstream its research object, using the data of STS(soil total salinity),SMC(soil moisture content),pH and SOM(soil organic matter)by the method of descriptive statistics,geo-statistics and spatial analysis,discuss the distribution characteristics of soil salinity,moisture,pH and organic matter in the study area,,and preliminary discuss its influence factors.The results showed that soil salinity and soil moisture belongs to medium variation,coefficient of variation were 90.61% and 65.82%respectively。pH value belongs to weak variation degree,the coefficient of variation is 2.69%。soil organic matter belongs to strong variation degree,coefficient of variation was 153.23%.the ratio of spatial variability in the Study area is in range of 61.6~95. 8%,the STS(soil total salinity)belongs to moderate spatial correlation,SMC(soil moisture content), pH and SOM(soil organic matter)belong to weak spatial correlation.According to The distribution map, spatial distribution of soil salinity trends of central place higher than surrounding。spatial distribution of soil moisture trend of southwest higher than northeast,spatial distribution of pH value basically welldistributed,Jinghe area is slightly higher than Bohe。spatial distribution of soil organic matter trend of central place higher than the surrounding and Southwest than northeast.soil salinity positively correlated with soil moisture and organic matter,especially strongly correlated with organic matter。soil moisture had significant positive correlation with organic matter。pH negatively correlated with soil salinity,moisture and organic matter,especially significantly negative correlated with soil salinity。