Why did Tantoushan Island become a desert island?

Soil reasons. Tantoushan Island is located 10 kilometers east of Shipu Town, southwest of Nantian Island, with an area of ??11.03 square kilometers. The island is shaped like an iron anchor, and the island is named after a mountain. According to the official website of Tantoushan Island, due to years of excessive Mining has reduced the nutrient rate of its soil, causing more and more residents to move away from the island, turning it into a desert island. As of August 13, 2022, Tantoushan Island has been transformed into a famous tourist resort Attractions.