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Your search keyword '"Akihiko Kondoh"' showing total 3 results
Start Over Author "Akihiko Kondoh" Publisher elsevier
3 results on '"Akihiko Kondoh"'

1. Generating soil salinity, soil moisture, soil pH from satellite imagery and its analysis

Author

Mochamad Firman Ghazali, Ketut Wikantika, Agung Budi Harto, and Akihiko Kondoh

Subjects
Landsat 8, Soil moisture index, Soil salinity index, Soil pH, Paddy leaf model, Bare soil model, Agriculture (General), S1-972, Information technology, T58.5-58.64
Abstract

In an agricultural field, the water content and salt content are defined as soil moisture and soil salinity and have to be estimated precisely. The changing of these two factors can be assessed using remote sensing technology. This study was conducted by analysing the Landsat 8 satellite images, soil data of field surveys, laboratory analyses and statistical computations. Soil properties such as soil moisture and soil salinity were estimated using soil moisture index (SMI) and soil salinity index (SSI), respectively. The research combined and integrated the soil data from survey and laboratory with Landsat 8 satellite images to build two multiple regression equations model named the soil pH Index (SpHI). They are based on bare soil and paddy leaf models as the explanatory factors of soil moisture and soil salinity changes. All the computation processes were replicated three times using three different dates of Landsat 8 satellite images to produce the multi-temporal analysis. Soil moisture increased after 30 days, while the salt content was only trace amounts. Both proposed models detected 4.49–7.59 of soil pH, 4.66 in bare soil model and 6.62 in paddy leaf model. During the planting period, the soil pH in bare soil model decreased to 2.12–6.47 while the paddy leaf model increased to 4.49–7.59 with RMSE 1.40 and PRMSE 24% of accuracy. The spatial relationship between soil pH, soil salinity and soil moisture are linear but varied in correlation level from weak, moderate to strong. Based on the bare soil model, the relationship between soil pH and soil moisture shows a weak negative relationship with R2 8.37% and a strong positive relationship with R2 81.94% in paddy area and bare soil area respectively, as like as in paddy area based on the paddy leaf model with R2 100%. The relationship between soil temperature and soil pH shows a weak negative relationship for all models and a moderate negative relationship of soil salinity and soil pH in bare soil area based on the bare soil model with R2 34.89%.

Published
2020
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2. List of Contributors

Author

Hiroya Abe, Tadafumi Adschiri, Takashi Akatsu, Jun Akedo, Masanori Ando, Yoshinori Ando, Hiroyuki Anzai, Masanobu Awano, Akira Azushima, Tetsuya Baba, Weiwu Chen, Kensei Ehara, Hitoshi Emi, Hiroshi Fudouzi, Masayoshi Fuji, Hidetoshi Fujii, Hiroshi Fukui, Takehisa Fukui, Yoshinobu Fukumori, Hideki Goda, Kuniaki Gotoh, Yukiya Hakuta, Kaori Hara, Kazuyuki Hayashi, Ko Higashitani, Kazuyuki Hirao, Masuo Hosokawa, Yuji Hotta, Hideki Ichikawa, Takashi Ida, Manabu Ihara, Shinji Inagaki, Mitsuteru Inoue, Eiji Iritani, Naoyuki Ishida, Norifumi Isu, Mikimasa Iwata, Hiroshi Jinnai, Norihiko Kaga, Kotaro Kajikawa, Toshio Kakui, Hidehiro Kamiya, Kenji Kaneko, Kiyoshi Kanie, Junya Kano, Hitoshi Kasai, Tomoko Kasuga, Tsutomu Katamoto, Shinji Katsura, Masayoshi Kawahara, Yoshiaki Kawashima, Yoshiaki Kinemuchi, Soshu Kirihara, Akira Kondo, Akihiko Kondoh, Katsuyoshi Kondou, Yasuo Kousaka, Kazue Kurihara, Shun’ichi Kuroda, Ken-ichi Kurumada, Hiroaki Kuwahara, Chunliang Li, Hisao Makino, Hiroaki Masuda, Yoshitake Masuda, Motohide Matsuda, Shuji Matsusaka, Tatsushi Matsuyama, Reiji Mezaki, Takeshi Mikayama, Minoru Miyahara, Kiyotomi Miyajima, Yoshinari Miyamoto, Masaru Miyayama, Hideki T. Miyazaki, Hidetoshi Mori, Tsutomu Morimoto, Hirokazu Munakata, Muhammad Miftahul Munir, Atsushi Muramatsu, Norio Murase, Toshihiko Myojo, Makio Naito, Noriyuki Nakajima, Masami Nakamoto, Masaharu Nakamura, Keitaro Nakamura, Hachiro Nakanishi, Norikazu Namiki, Naoki Noda, Kiyoshi Nogi, Yuji Noguchi, Toshiyuki Nomura, Takashi Ogi, Satoshi Ohara, Akira Ohtomo, Hidetoshi Oikawa, Tomoichiro Okamoto, Tatsuya Okubo, Kikuo Okuyama, Minoru Osada, Yoshio Otani, Yasufumi Otsubo, Masashi Otsuki, Fumio Saito, Shuji Sakaguchi, Yoshio Sakka, Shuji Sasabe, Takayoshi Sasaki, Takafumi Sasaki, Norifusa Satoh, Tetsuya Senda, Yuichi Setsuhara, Haruhide Shikano, Manabu Shimada, Akihiko Suda, Hisao Suzuki, Michitaka Suzuki, Takahiro Takada, Chika Takai, Seiichi Takami, Hirofumi Takase, Kenji Takebayashi, Hirofumi Takeuchi, Junichi Tatami, Kenji Toda, Tetsuro Tojo, Hiroyuki Tsujimoto, Tetsuo Uchikoshi, Keizo Uematsu, Mitsuo Umetsu, Arimitsu Usuki, Fumihiro Wakai, Akimasa Yamaguchi, Yukio Yamaguchi, Hiromitsu Yamamoto, Kenji Yamamoto, Kimihisa Yamamoto, Atsushi Yamamoto, Masatomo Yashima, Toyokazu Yokoyama, Susumu Yonezawa, and Qiwu Zhang

Published
2012
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3. List of Contributors

Author

Hiroya Abe, Tadafumi Adschiri, Takashi Akatsu, Jun Akedo, Masanori Ando, Yoshinori Ando, Masanobu Awano, Akira Azushima, Tetsuya Baba, Kensei Ehara, Hitoshi Emi, Hiroshi Fudouzi, Hiroshi Fukui, Takehisa Fukui, Yoshinobu Fukumori, Masayoshi Fuji, Hidetoshi Fujii, Hideki Goda, Kuniaki Gotoh, Yukiya Hakuta, Kaori Hara, Kazuyuki Hayashi, Ko Higashitani, Kazuyuki Hirao, Masuo Hosokawa, Yuji Hotta, Hideki Ichikawa, Takashi Ida, Manabu Ihara, Shinji Inagaki, Mitsuteru Inoue, Eiji Iritani, Naoyuki Ishida, Mikimasa Iwata, Kotaro Kajikawa, Toshio Kakui, Hidehiro Kamiya, Kenji Kaneko, Kiyoshi Kanie, Hitoshi Kasai, Tomoko Kasuga, Tsutomu Katamoto, Shinji Katsura, Masayoshi Kawahara, Yoshiaki Kinemuchi, Soshu Kirihara, Akihiko Kondoh, Katsuyoshi Kondou, Yasuo Kousaka, Kazue Kurihara, Shun'ichi Kuroda, Ken-ichi Kurumada, Chunliang Li, Hisao Makino, Hiroaki Masuda, Yoshitake Masuda, Motohide Matsuda, Tatsushi Matsuyama, Shuji Matsusaka, Reiji Mezaki, Takeshi Mikayama, Kiyotomi Miyajima, Minoru Miyahara, Yoshinari Miyamoto, Masaru Miyayama, Hideki T. Miyazaki, Hidetoshi Mori, Tsutomu Morimoto, Atsushi Muramatsu, Norio Murase, Toshihiko Myojo, Makio Naito, Noriyuki Nakajima, Hachiro Nakanishi, Masami Nakamoto, Norikazu Namiki, Kiyoshi Nogi, Yuji Noguchi, Toshiyuki Nomura, Satoshi Ohara, Akira Ohtomo, Hidetoshi Oikawa, Tomoichiro Okamoto, Tatsuya Okubo, Kikuo Okuyama, Yoshio Otani, Yasufumi Otsubo, Fumio Saito, Shuji Sakaguchi, Yoshio Sakka, Takafumi Sasaki, Norifusa Satoh, Haruhide Shikano, Manabu Shimada, Tetsuya Senda, Yuichi Setsuhara, Akihiko Suda, Hisao Suzuki, Michitaka Suzuki, Takahiro Takada, Seiichi Takami, Hirofumi Takase, Hirofumi Takeuchi, Junichi Tatami, Kenji Toda, Hiroyuki Tsujimoto, Tetsuo Uchikoshi, Keizo Uematsu, Mitsuo Umetsu, Arimitsu Usuki, Fumihiro Wakai, Akimasa Yamaguchi, Yukio Yamaguchi, Atsushi Yamamoto, Hiromitsu Yamamoto, Kenji Yamamoto, Kimihisa Yamamoto, Masatomo Yashima, Toyokazu Yokoyama, and Susumu Yonezawa

Published
2008
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