7
Kanto-Koushinetsu Region
Hiroaki Sumida, Yusuke Takata, Masataka Komatsu, Kumiko Baba,
Yutaka Shiratori, Hiroshi Takesako, Kenji Kanazawa,
Masayuki Kawahigashi, Masaharu Ikeba, Naruo Miyazaki,
Nobuyuki Kanuma, Kazuko Someya, Kunio Maruoka,
Takashi Tsukamoto, Kosuke Homma, Akira Noguchi,
Fumie Shinmachi, Hiroko Yamaya-Ito, Reiji Takahashi,
Takayuki Kobayashi, and Syunrokurou Fujiwara
Abstract
The area of Kanto-Koushinetsu occupies 16%
(63,041 km
2 ) of the land area of Japan. This region
includes the Tokyo metropolis and the prefectures of
Ibaraki, Tochigi, Gunma, Saitama, Chiba, Kanagawa,
Yamanashi, Nagano, Niigata. Significant depletion in
agricultural land has been progressed from 1972 to 2011
due to the population concentration in the urban area of
Tokyo metropolis and the prefectures of Saitama, Chiba,
Kanagawa. The area around the population concentration
zone plays an important role in supplying vegetables, and
the national share of items is 33.8% for vegetables and
25.6% for a flowering plant, and these values are the top
of the Japan. In the Kanto region, the plain area occupies
a large area, and agricultural activities are being developed under good water use and the existence of a
populated area. The characteristics of geology, topography, climatic conditions and soil characteristics and the
effects of volcanic ash soil in this area are described. The
relationship between the recent agricultural production of
Kanto-Koshinetsu area and the soil characteristics of each
area was clarified. On the other hand, anthropogenic soils
are increasing in Tokyo metropolis and problems in
current soil classification system emerged from these soils
has been pointed out. As a topic, an action on restoration
of habitat for the reintroduction of the crested ibis in Sado
Island (Sado City, Niigata Prefecture) for selected as
Globally Important Agricultural Heritage System
H. Sumida (&) Á A. Noguchi Á F. Shinmachi Á H. Yamaya-Ito Á
R. Takahashi Á T. Kobayashi
College of Bioresource Sciences, Nihon University, Fujisawa
City, Kanagawa Prefecture, Japan
e-mail: sumida.hiroaki@nihon-u.ac.jp
Y. Takata
Institute for Agro-Environmental Sciences, NARO, Tsukuba City,
Ibaraki Prefecture, Japan
M. Komatsu
Nagano Prefecture Farmers Academy, Nagano Prefectural
Government, Nagano City, Nagano Prefecture, Japan
K. Baba
Yamanashi Prefectural Agricultural Technology Center,
Yamanashi Prefectural Government, Kai City, Yamanashi
Prefecture, Japan
Y. Shiratori
Niigata Agricultural Research Institute, Niigata Prefectural
Government, Nagaoka City, Niigata Prefecture, Japan
H. Takesako Á S. Fujiwara
Former Kurokawa Field Science Center, Meiji University,
Kawasaki City, Kanagawa Prefecture, Japan
K. Kanazawa
Central Region Agricultural Research Center, NARO, Tsukuba
City, Ibaraki Prefecture, Japan
M. Kawahigashi
Department of Geograpy, Tokyo Metropolitan University,
Hachioji City, Tokyo, Japan
M. Ikeba
Ibaraki Agricultural Center, Ibaraki Prefectural Government, Mito
City, Ibaraki Prefecture, Japan
N. Miyazaki
Tochigi Prefectural Agricultural Experiment Station, Tochigi
Prefectural Government, Utsunomiya City, Tochigi Prefecture,
Japan
N. Kanuma Á K. Someya
Gunma Agricultural Technology Center, Gunma Prefectural
Government, Isesaki City, Gunma Prefecture, Japan
K. Maruoka
Saitama Prefectural Honjo Agriculture and Forestry Promotion
Center, Saitama Prefectural Government, Kumagaya City,
Saitama Prefecture, Japan
T. Tsukamoto
Chiba Prefectural Agriculture and Forestry Research Center,
Chiba Prefectural Government, Chiba City, Chiba Prefecture,
Japan
K. Homma
Faculty of Agriculture, Field Center for Sustainable Agriculture
and Forestry, Niigata University, Niigata City, Niigata Prefecture,
Japan
© Springer Nature Singapore Pte Ltd. 2021
R. Hatano et al. (eds.), The Soils of Japan, World Soils Book Series,
https://doi.org/10.1007/978-981-15-8229-5_7
245
Kanto-Koushinetsu Region
Hiroaki Sumida, Yusuke Takata, Masataka Komatsu, Kumiko Baba,
Yutaka Shiratori, Hiroshi Takesako, Kenji Kanazawa,
Masayuki Kawahigashi, Masaharu Ikeba, Naruo Miyazaki,
Nobuyuki Kanuma, Kazuko Someya, Kunio Maruoka,
Takashi Tsukamoto, Kosuke Homma, Akira Noguchi,
Fumie Shinmachi, Hiroko Yamaya-Ito, Reiji Takahashi,
Takayuki Kobayashi, and Syunrokurou Fujiwara
Abstract
The area of Kanto-Koushinetsu occupies 16%
(63,041 km
2 ) of the land area of Japan. This region
includes the Tokyo metropolis and the prefectures of
Ibaraki, Tochigi, Gunma, Saitama, Chiba, Kanagawa,
Yamanashi, Nagano, Niigata. Significant depletion in
agricultural land has been progressed from 1972 to 2011
due to the population concentration in the urban area of
Tokyo metropolis and the prefectures of Saitama, Chiba,
Kanagawa. The area around the population concentration
zone plays an important role in supplying vegetables, and
the national share of items is 33.8% for vegetables and
25.6% for a flowering plant, and these values are the top
of the Japan. In the Kanto region, the plain area occupies
a large area, and agricultural activities are being developed under good water use and the existence of a
populated area. The characteristics of geology, topography, climatic conditions and soil characteristics and the
effects of volcanic ash soil in this area are described. The
relationship between the recent agricultural production of
Kanto-Koshinetsu area and the soil characteristics of each
area was clarified. On the other hand, anthropogenic soils
are increasing in Tokyo metropolis and problems in
current soil classification system emerged from these soils
has been pointed out. As a topic, an action on restoration
of habitat for the reintroduction of the crested ibis in Sado
Island (Sado City, Niigata Prefecture) for selected as
Globally Important Agricultural Heritage System
H. Sumida (&) Á A. Noguchi Á F. Shinmachi Á H. Yamaya-Ito Á
R. Takahashi Á T. Kobayashi
College of Bioresource Sciences, Nihon University, Fujisawa
City, Kanagawa Prefecture, Japan
e-mail: sumida.hiroaki@nihon-u.ac.jp
Y. Takata
Institute for Agro-Environmental Sciences, NARO, Tsukuba City,
Ibaraki Prefecture, Japan
M. Komatsu
Nagano Prefecture Farmers Academy, Nagano Prefectural
Government, Nagano City, Nagano Prefecture, Japan
K. Baba
Yamanashi Prefectural Agricultural Technology Center,
Yamanashi Prefectural Government, Kai City, Yamanashi
Prefecture, Japan
Y. Shiratori
Niigata Agricultural Research Institute, Niigata Prefectural
Government, Nagaoka City, Niigata Prefecture, Japan
H. Takesako Á S. Fujiwara
Former Kurokawa Field Science Center, Meiji University,
Kawasaki City, Kanagawa Prefecture, Japan
K. Kanazawa
Central Region Agricultural Research Center, NARO, Tsukuba
City, Ibaraki Prefecture, Japan
M. Kawahigashi
Department of Geograpy, Tokyo Metropolitan University,
Hachioji City, Tokyo, Japan
M. Ikeba
Ibaraki Agricultural Center, Ibaraki Prefectural Government, Mito
City, Ibaraki Prefecture, Japan
N. Miyazaki
Tochigi Prefectural Agricultural Experiment Station, Tochigi
Prefectural Government, Utsunomiya City, Tochigi Prefecture,
Japan
N. Kanuma Á K. Someya
Gunma Agricultural Technology Center, Gunma Prefectural
Government, Isesaki City, Gunma Prefecture, Japan
K. Maruoka
Saitama Prefectural Honjo Agriculture and Forestry Promotion
Center, Saitama Prefectural Government, Kumagaya City,
Saitama Prefecture, Japan
T. Tsukamoto
Chiba Prefectural Agriculture and Forestry Research Center,
Chiba Prefectural Government, Chiba City, Chiba Prefecture,
Japan
K. Homma
Faculty of Agriculture, Field Center for Sustainable Agriculture
and Forestry, Niigata University, Niigata City, Niigata Prefecture,
Japan
© Springer Nature Singapore Pte Ltd. 2021
R. Hatano et al. (eds.), The Soils of Japan, World Soils Book Series,
https://doi.org/10.1007/978-981-15-8229-5_7
245