Tatsuno (辰野町, Tatsuno-machi) is a town located in Nagano Prefecture, Japan. As of 1 June 2019[update], the town had an estimated population of 18,951 in 7917 households,[1] and a population density of 112 persons per km2. The total area of the town is 169.20 square kilometres (65.33 sq mi).
Geography
Tatsuno is located in the Ina Valley of south-central Nagano Prefecture, bordered by the Kiso Mountains. The Tenryū River flows through the town, which is surrounded by mountains and is rich in a natural environment. It is takes about 3 hours from Tokyo, 2 hours from Nagoya, 5 hours from Kyoto by train and equally by car. Part of the town is within the borders of the Enrei Ōjō Prefectural Natural Park. The Yokokawa Dam is located in Tatsuno.
The village has a climate characterized by characterized by warm and humid summers, and cold winters (Köppen climate classificationDfa). The average annual temperature in Tatsuno is 11.1 °C (52.0 °F). The average annual rainfall is 1,435.8 mm (56.53 in) with July as the wettest month. The temperatures are highest on average in August, at around 23.6 °C (74.5 °F), and lowest in January, at around −1.2 °C (29.8 °F).[2]
Climate data for Tatsuno (1991−2020 normals, extremes 1978−present)
The area of present-day Tatsuno was part of ancient Shinano Province. The village of Inatomi established on April 1, 1889, by the establishment of the municipalities system, and was elevated to town status on January 1, 1947, changing its name to Tatsuno at that time. The neighboring village of Asahi was annexed on April 1, 1955, followed by Kawashima on September 30, 1956, and Ono on March 31, 1961.
Demographics
Per Japanese census data,[4] the population of Tatsuno has declined slightly in recent decades.
Historical population
Year
Pop.
±%
1940
20,842
—
1950
24,146
+15.9%
1960
22,419
−7.2%
1970
22,351
−0.3%
1980
23,894
+6.9%
1990
23,901
+0.0%
2000
22,407
−6.3%
2010
20,909
−6.7%
2020
18,555
−11.3%
Education
Tatsuno has five public elementary schools and five public middle school operated by the town government, and one high school operated the Nagano Prefectural Board of Education. The Shinshu Honan Junior College is also located in Tatsuno.
Matsuo-kyo (松尾峡): one of the most famous places in Japan for fireflies (called Genji fireflies (ゲンジボタル) in Japan) every summer. However, the intentional introduction of non-native fireflies and its negative influence on the native fireflies of Tatsuno were highlighted in an academic journal.[5] and several major newspapers.[6][7][8]
^Y. Iguchi (2009) The ecological impact of an introduced population on a native population in the firefly Luciola cruciata (Coleoptera: Lampyridae).Biodiversity and Conservation, 18: 82119-2126. https://doi.org/10.1007%2Fs10531-009-9576-8.
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