鄂尔多斯沙区天然水体水化学组成及其成因

任孝宗, 杨小平

Hydrochemical compositions of natural waters inOrdos Deserts and their influencing factors

REN Xiaozong, YANG Xiaoping

图6 USSL图指示的鄂尔多斯沙区天然水体的灌溉水等级

Fig. 6 Irrigation water grade of natural waters in Ordos Deserts indicated by USSL diagram