2018年07月23日

'Kushiro Wetlands' in the east of 'Hokkaido', stretching along the 'Kushiro River', is Japan's largest wetlands.

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Kushiro Wetlands which was registered under the Ramsar Convention in 1980, the earliest in Japan, was designated as a national park in 1987 thereafter. The Kushiro River and its tributaries are largely meandering through this national park holding five major inland sea-lakes. Numberless 'Yachi-Manakos', which are small bottomless swamps formed in the small holes of the peat layers, are found here and there, so the visitors are urged to go on the boardwalks. This wetlands in a treasure-house of really large number of animals and plants, including rare ones. Thus, the nature conservation movement of this wetlands was initiated in 1935 to protect and breed Japanese red-crowned cranes flying in in winter. This sanctuary has been expanded to the area of 27,000 ha, where all the wildlife are strictly protected.

Licensed tour guide/travel consultant,
Masahisa Takaki.

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posted by masahisa at 09:53 | Hokkaido | このブログの読者になる | 更新情報をチェックする

2018年07月21日

'Lake Kussharo' in the east of 'Hokkaido' is Japan's largest caldera lake.

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Kussharo caldera slightly exceeds 'Aso' caldera in 'Kyushu' in size, boasting itself to be the largest caldera in the country. The specific size of it is 20 kilometers from north to south, and 26 kilometers from east to west. Ancient Lake Kussharo was a round shape as it was formed entire inner area of this huge caldera, but now it has become almost half size with a green pea shape. Japan's sixth largest lake though, aquatic life can be hardly found here since this lake water takes on rather strong acid pH. There stands one island in this lake, with the perimeter of 12 kilometers and the height of 355 meters above the surface of the lake. And this island has a crater on top. As many hot springs are gushing out in this vicinity, natural hot water gradually oozes out even from digging by hand on the lake shore.

Licensed tour guide/travel consultant,
Masahisa Takaki.

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posted by masahisa at 11:42 | Hokkaido | このブログの読者になる | 更新情報をチェックする

2018年07月19日

'Lake Mashu', in the mountainous area of the eastern part of Hokkaido, is known as the world's second highest transparent lake after 'Lake Baikal' in Russia.

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Lake Mashu, which was formed by volcanic eruption, is a caldera lake. As being located remotely and secludedly, with no rivers flowing in and out, it features very transparent water. A small island called 'Kamuishu' in the middle of the lake and 'Mashu-dake' active volcano on the right-hand of the photo are seen. The transparency of this lake actually was a little better than Lake Baikal from 1930 to 1946, that is, Lake Mashu used to be world's No.1. However its transparency has gradually deteriorated since 1952.
The effective countermeasures are hard to find, because the cause of the water contamination is still unknown in spite of the study.
Even so, the water of the lake shows beautiful blue so-called 'Mashu Blue' on glorious days.

Licensed tour guide/travel consultant,
Masahisa Takaki.

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posted by masahisa at 13:12 | Hokkaido | このブログの読者になる | 更新情報をチェックする