And the more complex the water quality is and the higher the TDS is toward the center of basin; the change of water quality in the Malian river indicate that groundwater of the east and west side recharges the river.

• 说明鄂尔多斯盆地南区的东部地区和西南部地区为地下水补给区，而中心地带为地下水排泄区，最终经马莲河排出区外。