The altitude difference in Xi 'an ranks first among the cities in China. The Qinling Mountains, with its steep and beautiful peaks, and the wide and flat Weihe Plain have clear boundaries, which constitute the main landforms of Xi 'an. The main peak of Qinling Mountain is 2000-2800 meters above sea level, of which the main peak of Taibai Mountain in the southwest is 3867 meters above sea level, which is the highest peak in the central part of the mainland.
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Xi is a water-deficient city in the west. The groundwater reserves in Xi city are about 1.9438+0 billion cubic meters. In February of 20001year, the main project of Heihe water control project was completed, supplying 400 million cubic meters of water to Xi every year, forming a daily water supply capacity of 6.5438+0.2 million tons. Coupled with groundwater resources, the daily water supply capacity of the urban area can reach 6.5438+0.72 million tons, which basically meets the urban production and domestic water demand.
The plain area north of Qinling Mountains has good geological conditions for storing geothermal water. The exploitable geothermal area in the urban area alone is about 780 square kilometers, and the recoverable reserves of geothermal water are about 539 million cubic meters.
The soil distribution in Xi 'an is divided into two areas with obvious differences between north and south. The Weihe Plain in the north is represented by yellow cinnamon soil and cinnamon soil, and the Qinling Mountains in the south is represented by yellow brown soil and brown soil.
Baidu encyclopedia -Xi' an