The results showed that the total N,total P,total K and soluble salt,such as HCO-3,SO24and Ca2+,increase from the rim to center of desert while the values of CO2-3,Mg2+,Cl-and Na+ are very low and show no remarkable trend.

• 研究表明:沙漠边缘至沙漠腹地,全N、全P和全K含量、EC、总盐,可溶性离子HCO3-、SO42-及Ca2+呈增加趋势。 CO32-、Mg2+、Cl-、Na+4种离子含量较低,变化规律不明显。