What are the important functions of Qinling Mountains?

Qinling Mountain has obvious blocking effect on airflow operation. Summer makes it difficult for humid marine air to penetrate into the northwest, making the climate in the north dry; In winter, the cold wave is prevented from invading southward, which makes Hanzhong basin and Sichuan basin less affected by cold air. Therefore, the role of Qinling Mountain: 1, Qinling Mountain becomes the dividing line between subtropical zone and warm temperate zone. 2. The dividing line between the humid area and the semi-humid area. 3. The dividing line with obvious differences in river conditions. 4. The dividing line between different soils and vegetation. 5. Agricultural production has different dividing lines.

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