Chashi

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Kushiro wetlands

Chashi (チャシ also 砦) is the

Kushiro, date to the Muromachi period; the remainder date largely to the early seventeenth century.[1] As such their construction may be related to increased competition for resources as a result of "intensification of trade" with the Japanese.[1]

Form

The early Dutch explorer

Maarten Gerritsz Vries described the chashi he encountered in eastern Hokkaidō in 1643:[3]

These forts were made as follows: on the mountain on which they were placed was a small road steep to climb, and round on the four sides palisades were placed of the height … of 1½ man's length; within this stood two or three houses. There were large fir doors in the palisades with strong clamps; when they were closed, two stout bars were passed through the clamps and thus fastened to them. At the two corners of these … palisades, a high scaffolding is made of fir planks, for a lookout.

Competition for resources

Chashi on the Nemuro Peninsula (Historic Site)

In 1604

ceramics, ironware, and swords, as well as beads perhaps from Sakhalin; consumables included rice, sake, and tobacco.[1] In return the Ainu traded products derived from bird, beast, and fish; plants and medicines; and goods imported via Sakhalin.[1] However, "the market culture of the trading post … destroy[ed] the ecological balance … [through] overhunting and overfishing".[1] By the end of the following century, the depletion of natural stocks resulted in famine.[1] Furthermore, "competition over animals and fisheries was at the heart of most Ainu conflicts".[1]

Shakushain's Revolt

The Ezo hōki (蝦夷蜂起,

Urakawa Ainu to attack the Atsubetsu casi; driven off by musket fire they returned in force and captured it, after many of its defenders had left in search of food.[1] The conflict escalated the following year into fighting with the Japanese. Peace talks were arranged, but the Japanese poisoned Shakshain's drink during the talks, killing him. The Shibuchari casi again burned to the ground.[1]

Known chashi

Katsuragaoka chashi (Historic Site)

Among the approximately five hundred and thirty chashi identified by archaeologists, the sites of eight have been

designated national Historic Sites: the Otafunbe chashi;[6] Shibechari River chashi and Appetsu chashi;[7] Moshiriya chashi;[8] Yukuepira chashi;[9] Katsuragaoka chashi;[10] Nemuro Peninsula chashi;[11] and Tsurugataicharanke chashi.[12] Others known include the Arashiyama casi, Harutoru casi, Onibishi's casi, Sarushina casi, Sashirui casi, Setanai casi, and Uraike casi.[1] Although there are nineteen chashi on the Shiretoko Peninsula, it is inscribed as a Natural rather than a mixed Natural and Cultural UNESCO World Heritage Site.[13][14]

Functions

In addition to providing for defence against rival Ainu, casi functioned as centres for gatherings and rituals.

Akkeshi and Nemuro Ainu attacked the Uraike casi in the hope of "fine treasure"; other casi were attacked by hungry Ainu looking for venison and dried salmon.[1]

See also

References

  1. ^
    ISBN 0-520-22736-0
    .
  2. ^ "Chashi". Japanese Architecture and Art Net Users System. Retrieved 21 June 2012.
  3. ^
    ISBN 978-0-824-82156-2
    .
  4. ^ Ushiro Hiroshi. "Establishment process of Chashi and Fortified Settlement Sites in Northeast Asia and their environmental change". National Institute of Informatics. Archived from the original on 19 December 2012. Retrieved 24 June 2012.
  5. ISBN 978-0-520-08629-6
    .
  6. ^ "オタフンベチャシ跡" [Otafunbe Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  7. ^ "シベチャリ川流域チャシ跡群及びアッペツチャシ跡" [Shibechari River Chashi Site - Appetsu Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  8. ^ "モシリヤ砦跡" [Moshiriya Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  9. ^ "ユクエピラチャシ跡" [Yukuepira Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  10. ^ "桂ヶ岡砦跡" [Katsuragaoka Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  11. ^ "根室半島チャシ跡群" [Nemuro Peninsula Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  12. ^ "鶴ヶ岱チャランケ砦跡" [Tsurugataicharanke Chashi Site] (in Japanese). Agency for Cultural Affairs. Retrieved 21 June 2012.
  13. ^ Kato Hirofumi. "World Heritage and Indigenous archaeology in Hokkaido Island" (PDF). Hokkaido University. Retrieved 24 June 2012.[permanent dead link]
  14. ^ "Shiretoko". UNESCO. Retrieved 24 June 2012.
  15. ^ Ushiro Hiroshi. "Systematic structure of protective settlements and Chashi (Fortes Ainu) found in the northern areas, and ethnic encounters". National Institute of Informatics. Archived from the original on 19 December 2012. Retrieved 24 June 2012.
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