A shield volcano that spreads across the border of Akita and Iwate prefectures. In the narrow sense, Hachimantai refers to the area called the summit of Hachimantai, which is 1,613 meters above sea level, but in a broader sense, it refers to the plateau-like mountain range that includes volcanoes such as Chausu-dake (1,578 meters) to the east of the summit of Hachimantai, and Yake-san (1,366 meters) to the west. Beech forests are abundant at an altitude of 600 meters, but above 1,000 meters, it becomes a sea of Aomoritodomatsu (Maries' fir) trees. Because the terrain is flat and there is nothing to block the seasonal winds, Aomoritodomatsu grows poorly and has a flattened shape. To the east of the summit of Hachimantai, there are many small swamps such as Hachimantai-numa and Gama-numa, which are crater lakes, and the surrounding area is a marshland. Asian skunk cabbage and Shirane-aoi can be seen. Near Mosen Pass between Mount Yakeyama and Tsugamori to the east, plant communities including black crowberry and cowberry can be seen. The view from the summit of Hachimantai is magnificent, and Mount Iwate, Mount Komagatake, and other mountains can be seen. The Hachimantai Aspite Line road (closed in winter) runs from east to west, making it relatively easy to explore the plateau. Hachimantai hot spring resorts include Toshichi, Goshogake, and Toroko, and you can enjoy spring ski tours using these hot springs as a base. In winter, snow can exceed five meters and frost-covered trees form. It is one of the centers of Towada-Hachimantai National Park. [Reijiro Miyazaki] [References] | |The photo shows Kumanuma, located west of Mt. Chausu. Towa-Hachimantai National Park. Hachimantai City, Iwate Prefecture. © Iwate Tourism Association . Hachimantai Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
秋田・岩手県境に広がる楯状火山(たてじょうかざん)。狭義の八幡平は標高1613メートルの八幡平頂上、八幡平山頂とよばれる地であるが、広義には八幡平頂上の東方にある茶臼(ちゃうす)岳(1578メートル)、西方の焼(やけ)山(1366メートル)などの火山群を含む高原状の山地をさす。標高600メートルではブナ林が多いが、1000メートルを超えるとアオモリトドマツ(オオシラビソ)の樹海となる。地形が平坦(へいたん)で季節風を遮るものがないので、アオモリトドマツの生育は悪く扁形(へんけい)している。八幡平頂上の東方には火口湖の八幡沼、ガマ沼など小沼が多く、周辺は湿原となっている。ミズバショウ、シラネアオイなどがみられる。焼山とその東方の栂森(つがもり)の間の毛氈峠(もうせんとうげ)付近にはガンコウラン、コケモモなどの植物群落がみられる。 八幡平頂上からの展望は雄大で、岩手山、駒ヶ岳(こまがたけ)などを望むことができる。道路八幡平アスピーテライン(冬期は通行止)が東西方向に通じ、高原の探勝は比較的容易。藤七(とうしち)、後生掛(ごしょがけ)、トロコなど八幡平温泉郷があり、これらの温泉を基地とする春スキーのツアーを楽しむことができる。なお、冬期には積雪5メートルを超え、樹氷が生じる。十和田(とわだ)八幡平国立公園の一中心である。 [宮崎禮次郎] [参照項目] | |写真は茶臼岳西方にある熊沼。十和八幡平田国立公園域。岩手県八幡平市©公益財団法人岩手県観光協会"> 八幡平 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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