竹の分布

Distribution of Bamboo

in Japan

Bamboo is cultivated under warm and humid districts like Honshu, Shikoku and Kyushu islands, except for Aomori prefecture in Honshu island.

According to the statistics by Forestry Agency, Ministry of Agriculture, Forestry and Fishery, total about 100,000ha are cultivated in Japan, while 61,481ha by culm production and 38,306ha by bamboo shoot cultivation in 1999.
Culm production area is the most in Kyushu island as 64% occupied then 20% in Chugoku district in Honshu island.
Also the area of bamboo shoot cultivation is 72% in Kyushu island, the 9.5% in Shikoku island, 9% in Chubu distict and 6% in Chugoku district in Honshu island.
That is because the bamboo industry is more vigourous in warm districts.

Nevertheless, we have to recognize the decrease of cultivation area year by year as following table.

(Unit = ha)

Year

Culm production area

Bamboo shoot cultivation area

Total

in 1989

88,190.0

53,180.6

141,370.6

in 1993

61,097.8

46,162.3

107,260.1

in 1999

61,829.5

38,306.3

100,135.8

in 2003

56,833.7

23,089.7

78,923.4

in 2008

34,443.1

18,720.4

53,163.5


At present, we meet a sad phenomenon because Phyllostachys pubescens is naturally and widely extending to afforestation and villager's forests.
Due to the cause to destroy those forests, its criticism is concentrated to the vigourous growth of bamboo.
And, that gives very bad impression to people to think what a bad plant bamboo is!
On this problem, I believe the cause that few one likes to take care of those forests, because of not cause by bamboo.
So that, I would like to emphasize, "Bamboo is best plant for keeping our life, but the problem is caused by people." What do you think of it?

in the World

World distribution of bamboo is just like showing at following map.
Most distribution can be confirmed between 35 degree north and south latitudes in more than 1,000mm in precipitation, because of no distribution at dry regions where are less than 1,000mm in precipitation.

Even it is not clear, the distribution area is said to be 3.4 million ha in China, 0.81 million ha in Thailand, 1.48 million ha in Vietnam, 2.2 million ha in Myanmer and 9.57 milion ha? in India.
It is said that the 80% of distribution in the world must be found in Asian countries.

World distribution of bamboo drawn by M.Watanabe, 1987


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