Taiwan is a tilted fault block, characterized by the contrast between the eastern two-thirds, consisting mostly of five rugged mountain ranges parallel to the east coast, and the flat to gently rolling plains of the western third, where most of Taiwan's population reside. There are several peaks over 3,500 m, the highest being يو شان at 3,952 metres (12,966 ft), making Taiwan the world's fourth-highest island. The tectonic boundary that formed these ranges is still active, and the island experiences many earthquakes, a few of them highly destructive. There are also many active submarine volcanoes in the Taiwan Straits.
The climate ranges from tropical in the south to subtropical in the north, and is governed by the East Asian Monsoon.
The island is struck by an average of four typhoons in each year. The eastern mountains are heavily forested and home to a diverse range of wildlife, while land use in the western and northern lowlands is intensive.
Typhoons are most likely to strike between July and October, with on average about four direct hits per year. Intensive rain from typhoons often leads to disastrous mudslides.[4]
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