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Shikoku (四国, Shikoku, lit.'four provinces'), Japanese pronunciation:[ɕikokɯ] is the smallest of the four main islands of Japan. It is 225 km or 139.8 mi long and between 50 and 150 km or 31.1 and 93.2 mi at its widest. It has a population of 3.8 million (as of 2015[update], 3.1%), the least populated out of Japan's four main islands. It is south of Honshu and northeast of Kyushu.[1] Shikoku's ancient names include Iyo-no-futana-shima (伊予之二名島), Iyo-shima (伊予島), and Futana-shima (二名島), and its current name refers to the four former provinces that make up the island: Awa, Tosa, Sanuki, and Iyo.[2]
Shikoku is ranked as the 50th largest island by area in the world. Additionally, it is ranked as the 23rd most populated island in the world, with a population density of 193 inhabitants per square kilometre (500/sq mi).
Mountains running east and west divide Shikoku into a narrow northern subregion, fronting on the Seto Inland Sea, and a southern part facing the Pacific Ocean. The Hydrangea hirta species can be found in these mountain ranges. Most of the 3.8 million inhabitants live in the north, and all but one of the island's few larger cities are located there. Mount Ishizuchi (石鎚山) in Ehime at 1,982 m (6,503 ft) is the highest mountain on the island. Industry is moderately well developed and includes the processing of ores from the important Besshi copper mine. Land is used intensively. Wide alluvial areas, especially in the eastern part of the zone, are planted with rice and subsequently are double-cropped with winter wheat and barley. Fruit is grown throughout the northern area in great variety, including citrus fruits, persimmons, peaches, and grapes. Because of wheat production, Sanuki udon (讃岐うどん) became an important part of the diet in Kagawa Prefecture (formerly Sanuki Province) in the Edo period.
The larger southern area of Shikoku is mountainous and sparsely populated. The only significant lowland is a small alluvial plain at Kōchi, the prefectural capital. The area's mild winters stimulated some truck farming, specializing in growing out-of-season vegetables under plastic covering. Two crops of rice can be cultivated annually in the southern area. The pulp and paper industry took advantage of the abundant forests and hydroelectric power.
The major river in Shikoku is the Yoshino River. It runs 196 km (121.8 mi) from its source close to Mount Ishizuchi, flowing basically west to east across the northern boundaries of Kōchi and Tokushima Prefectures, reaching the sea at the city of Tokushima. The Yoshino is famous for Japan's best white-water rafting, with trips going along the Oboke Koboke sections of the river.
Shikoku has four important capes: Gamōda in Anan, Tokushima on the easternmost point on the island, Sada in Ikata, Ehime on the westernmost point. Muroto in Muroto, Kōchi and Ashizuri, the southern extreme of Shikoku, in Tosashimizu, Kōchi, jut into the Pacific Ocean. The island's northernmost point is in Takamatsu.
Unlike the other three major islands of Japan, Shikoku has no active volcanoes, and is the largest of Japan's islands to completely lack them.[3] But Shikoku did experience volcanic activity in the distant prehistoric past; a major volcanic caldera in the area of Mount Ishizuchi was active during the Miocene around 14 million years ago[4] and the small volcanic cone of Mount Iino at an unknown date.[5]
Shikoku has a total population of 3,630,320 in 2022. The largest city is Matsuyama (population: 507,137) and is the capital of Ehime Prefecture. Shikoku is the main island with the third largest population density, at 193 inhabitants per square kilometre (500/sq mi).
Per Japanese census data,[6] and,[7] Shikoku region's peak population was at 1950 and has had negative population growth from 1950 to 1970 and 1990 onward.
Historical population
Year
Pop.
±%
1920
3,066,000
—
1930
3,310,000
+8.0%
1940
3,337,000
+0.8%
1950
4,221,000
+26.5%
1960
4,122,000
−2.3%
1970
3,904,000
−5.3%
1980
4,163,000
+6.6%
1990
4,195,000
+0.8%
2000
4,154,039
−1.0%
2010
3,977,282
−4.3%
2018
3,755,765
−5.6%
Culture
Society and architecture
Shikoku has historically been rather isolated and therefore it has kept the original characteristics of Japan for a longer period, especially in regards to vegetation and some architectural techniques. There are many Buddhist temples.
The "lost" Shikoku has been described by an American writer, Alex Kerr, who lived in a remote mountain village near Oboke (大歩危) for many years from 1970 onwards.
Shikoku is also famous for its 88-temple pilgrimage of temples. The pilgrimage was established by the Heian-period Buddhist priest Kūkai, a native of present-day Zentsūji-cho in Kagawa prefecture. According to legend, Kūkai still appears to pilgrims today. Most modern-day pilgrims travel by bus, rarely choosing the old-fashioned method of going by foot. They are seen wearing white jackets emblazoned with the characters reading dōgyō ninin (同行二人) meaning "two traveling together".
Tokushima Prefecture also has its annual Awa Odori running in August at the time of the Obon festival, which attracts thousands of tourists each year from all over Japan and from abroad.
Kōchi Prefecture is home to the first annual Yosakoi festival. The largest festival in Kōchi, it takes place in August every year and attracts dancers and tourists from all over Japan.
One of the major foods of Shikoku is udon.[8]Udon is often served hot as a noodle soup in its simplest form, as kake udon, in a mildly flavoured broth called kakejiru, which is made of dashi, soy sauce (shōyu), and mirin. It is usually topped with thinly chopped scallions. Other common toppings include tempura, often prawn or kakiage (a type of mixed tempura fritter), or aburaage, a type of deep-fried tofu pockets seasoned with sugar, mirin, and soy sauce. A thin slice of kamaboko, a halfmoon-shaped fish cake, is often added. Shichimi can be added to taste. Another specialty is Kōchi's signature dish, seared bonito.
The warm climate of Shikoku lends itself to the cultivation of citrus fruits. As a result, yuzu, mikan and other citrus fruits are plentiful on Shikoku and have become synonymous with the regions they are grown in.
Historically no Shikoku-based sports team has competed in the top Japanese division of baseball, football (soccer) or even rugby union. However, Tokushima Vortis have had two spells in the top flight of Japanese soccer (J1) in 2014 and 2021. Currently the major teams competing in Shikoku's major cities include:
The central part of Shikoku is connected to Honshu by ferry, air, and – since 1988 – by the Great Seto Bridge network. Until completion of the bridges, the region was isolated from the rest of Japan. The freer movement between Honshu and Shikoku was expected to promote economic development on both sides of the bridges, which has not materialized yet.
^"Shikoku and Awaji Island"(PDF). Japan National Tourism Organization. September 2011. Archived(PDF) from the original on 2013-02-04. Retrieved 2013-05-02.
^Takehara, Mami; Horie, Kenji; Tani, Kenichiro; Yoshida, Takeyoshi; Hokada, Tomokazu; Kiyokawa, Shoichi (2017). "Timescale of magma chamber processes revealed by U-Pb ages, trace element contents and morphology of zircons from the Ishizuchi caldera, Southwest Japan Arc". Island Arc. 26 (2): e12182. Bibcode:2017IsArc..26E2182T. doi:10.1111/iar.12182. S2CID133362063.
Ehime
Kagawa
Kōchi
Tokushima
Matsuyama (pop. 507,137
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