At the marginal regions of the Linze Oasis in Hexi corridor,a study was conducted to proclaim the field-scale spatial and temporal variation characteristic of soil organic carbon in a reclaimed sandy farmland.The results showed that according to the data collected from tests of spatial variation,the content of soil organic carbon ranged from 2.66 to 6.90 g·kg-1,and the average content and variation coefficient of soil organic carbon were 4.45 g·kg-1 and 24.5%,respectively.The exponential model was fitted to...