The N and P contents were as follow: Oasis > transitional zone > hungriness, and the K content was as follow: Hungriness > transitional zone > oasis.

• N、P含量：绿洲＞过渡带＞荒漠；而由于盐渍化的影响K含量：荒漠＞过渡带＞绿洲。