A STUDY ON THE BALANCE OF WATER AND SOIL RESOURCES IN THE HEXI CORRIDOR,GANSU PROVINCE

<正> 1. Actual water resources In the Hexi Corridor, annual precipitation is only 35-200mm, showing semi-desertand desert landscape. But in the Qilian Mountains which are in the south of the Hexi Corri-dor, there is more precipitation. In the Shiyanghe, Heihe, Shulehe River basins average an-nual precipitation is respectively 2.3, 2.7, 3.6 times larger than that of the Hexi Corridor

A STUDY ON THE BALANCE OF WATER AND SOIL RESOURCES IN THE HEXI CORRIDOR,GANSU PROVINCE