Masahiko Nakazawa

J-GLOBAL         Last updated: Jul 16, 2019 at 19:07
 
Avatar
Name
Masahiko Nakazawa
Nickname
naka1978
E-mail
naka1978ffpri.affrc.go.jp
Affiliation
Forestry and Forest Products Research Institute

Published Papers

 
Oya Shinjiro, Nakazawa Masahiko, Inomata Yuta, Jinkawa Masaki, Miyazaki Takayuki, Takano Tsuyoshi, Toda Kenichiro, Yanagisawa Kenichi, Nishioka Yasuhisa
Journal of The Japan Forest Engineering Society   33(1) 15-24   2018
<p>Consistent clearcutting and reforestation operations are increasing in Japan. It is expected that the reuse of logging machines after clearcutting processes for the purpose of site preparation would result in cost reduction and work efficiency ...
Suzuki Hidenori, Nakazawa Masahiko, Sasaki Tatsuya, Uemura Takumi, Yoshida Chikashi, Jinkawa Masaki, Toda Kenichiro, Oya Shinjiro, Takano Tsuyoshi, Kondo Michiharu
Journal of The Japan Forest Engineering Society   32(3) 123-130   2017
<p>We investigated compaction in a strip road with the aim of clarifying the influence of mechanized harvesting operations on black soil. A cut-to length (CTL) system, including a wheel-type harvester and forwarder, was used for general and line t...
Yoshida Chikashi, Sasaki Tatsuya, Nakazawa Masahiko, Uemura Takumi, Jinkawa Masaki, Furukawa Kuniaki
Journal of The Japan Forest Engineering Society   32(4) 175-186   2017
<p>On-site performance tests of a new forest biomass harvesting system termed "Integrated Wood Logging System" were conducted in order to improve logging efficiency and cost-effectiveness. In the integrated harvesting system, the wood logs are loa...
NAKAZAWA Masahiko, YOSHIDA Chikashi, SASAKI Tatsuya, JINKAWA Masaki, TANAKA Yoshiaki, SUZUKI Hidenori, UEMURA Takumi, ITO Takayuki, YAMASAKI Toshihiko
Journal of The Japan Forest Engineering Society   30(1) 29-34   2015
This study aimed to develop an operational system for thinning using a medium-range tower yarder introduced from Europe. To that end, the productivity of thinning operations was researched, and the uphill-lateral yarding operation was analyzed in ...
YOSHIDA Chikashi, SASAKI Tatsuya, NAKAZAWA Masahiko, MOZUNA Masahiro, JINKAWA Masaki, FURUKAWA Kuniaki, USUDA Hisao, Morooka Masami, Morooka Noboru
Journal of The Japan Forest Engineering Society   28(1) 29-39   2013
We have developed forwarders that can collect and transport wood biomass and round wood more efficiently. The machines have equipment to compress the laden wood biomass by expanding the loading space with a hydraulic cylinder. As this report was i...
NAKAZAWA Masahiko, YOSHIDA Chikashi, SASAKI Tatsuya, UEMURA Takumi, SUZUKI Hidenori, JINKAWA Masaki, KONDO Michiharu, OYA Shinjiro, TODA Kenichiro, TAKANO Tsuyoshi
Journal of The Japan Forest Engineering Society   28(3) 187-192   2013
This study aimed to establish a CTL (Cut to Length) system in gentle terrain in Japan. Accordingly, ordinary and line thinning operations were analyzed using a small harvester and forwarder newly introduced from Europe. The productivity of felling...
UEMURA Takumi, NAKAZAWA Masahiko, SASAKI Tatsuya, IMATOMI Yuki, KASHIMA Jun
Journal of The Japan Forest Engineering Society   27(1) 25-29   2012
NAKAZAWA Masahiko, YOSHIDA Chikashi, SASAKI Tatsuya, JINKAWA Masaki, TANAKA Yoshiaki, SUZUKI Hidenori, UEMURA Takumi, ITO Takayuki, YAMASAKI Toshihiko, OYA Shinjiro, FURUKAWA Kuniaki, IMATOMI Yuki
Journal of The Japan Forest Engineering Society   27(3) 175-178   2012
This study aimed to develop an operational system for thinning using a tower yarder newly-introduced from Europe. To that end, the productivity of thinning operations was researched, and the uphill yarding operation under the cable was analysed in...
OKA Masaru, NAKAZAWA Masahiko, SASAKI Tatsuya, YOSHIDA Chikashi, UEMURA Takumi, KASHIMA Jun, KATOU Takashi
Journal of The Japan Forest Engineering Society   26(1) 27-34   2011
YOSHIDA Chikashi, NAKAZAWA Masahiko, MOZUNA Masahiro, JINKAWA Masaki, IKAMI Yuji, TAKANO Tsutomu, IMATOMI Yuki, OKA Masaru, FURUKAWA Kuniaki, USUDA Hisao, IWAOKA Masahiro
Journal of The Japan Forest Engineering Society   26(1) 57-64   2011
NAKAZAWA Masahiko, IMATOMI Yuki, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi, UEMURA Takumi, YAMAGUCHI Hirokazu, SUZUKI Hidenori, UMEDA Shuji, TAKAHASHI Masahiro, FUJII Yoshihito
Journal of The Japan Forest Engineering Society   26(3) 173-180   2011
This study aimed to develop a thinning system using an excavator with a long-reach grapple for prehauling operations. We examined the productivity of uphill prehauling for line thinning, and compared it with the grapple loader with winch. Finally,...
MOZUNA Masahiro, JINKAWA Masaki, YOSHIDA Chikashi, NAKAZAWA Masahiko, IKAMI Yuji, IWAOKA Masahiro, FURUKAWA Kuniaki, USUDA Hisao, KUSANO Yoshiyuki, TANAKA Seiichiro
Journal of The Japan Forest Engineering Society   26(4) 221-225   2011
JINKAWA Masaki, YOSHIDA Chikashi, MOZUNA Masahiro, NAKAZAWA Masahiko, IKAMI Yuji, FURUKAWA Kuniaki, USUDA Hisao, IWAOKA Masahiro, MOROOKA Masami, MOROOKA Noboru
Journal of The Japan Forest Engineering Society   26(4) 227-231   2011
NAKAZAWA Masahiko, IMATOMI Yuki, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi, UEMURA Takumi, YAMAGUCHI Hirokazu, KONDO Koji, TAKAHASHI Masahiro, FUJII Yoshito
Journal of The Japan Forest Engineering Society   25(1) 15-22   2010
This study aimed to develop a thinning system using an excavator with long-reach grapple for prehauling operations. We examined the effects of thinning method, prehauling direction, terrain and road condition on productivity. The maximum productiv...
TANAKA Yoshiaki, OKA Masaru, YOSHIDA Chikashi, KONDO Koji, NAKAZAWA Masahiko, TSUZUKI Nobuyuki, KODANI Eiji
Journal of The Japan Forest Engineering Society   23(4) 259-262   2009
NAKAZAWA Masahiko, MATSUMOTO Takeshi, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi
Journal of The Japan Forest Engineering Society   24(3) 97-106   2009
The purpose of this study was to propose approximate values of a correction factor for road density for each planning unit in mountainous area. We examined the effect of scale on this factor in four local authorities in the Higashimikawa Forest Pl...
YOSHIDA Chikashi, TANAKA Yoshiaki, JINKAWA Masaki, KONDO Koji, NAKAZAWA Masahiko, OKA Masaru, KUROSE Katsuo
Journal of The Japan Forest Engineering Society   22(4) 245-248   2008
NAKAZAWA Masahiko, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi, KONDO Koji
Journal of The Japan Forest Engineering Society   22(4) 261-264   2008
NAKAZAWA Masahiko, MATSUMOTO Takeshi, YAMADA YOZO
Journal of The Japan Forest Engineering Society   23(3) 189-200   2008
We compared the forestry operations, location, and topography of four local authority management areas in the Higashimikawa Forest Planning Area, Japan. The target road density was calculated for each local authority area by considering the public...
中澤 昌彦, 岩岡 正博, 峰松 浩彦
日本森林学会関東森林研究   (58) 205-208   Mar 2007
NAKAZAWA Masahiko, SUZUKI Hidenori, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi, KONDO Koji, MATSUMOTO Takeshi
Journal of The Japan Forest Engineering Society   22(1) 15-20   2007
TSUCHIYA Asako, YAMADA Yozo, NAKAZAWA Masahiko, YOSHIDA Chikashi, JINKAWA Masaki
Journal of The Japan Forest Engineering Society   22(2) 61-72   2007
We calculated the potential forest biomass that could be obtained from commercial thinning in terms of the price of domestic timber, without a subsidy for thinning. Then, we considered six subsidies, divided into three types, and examined the impa...
NAKAZAWA Masahiko, SUZUKI Hidenori, OKA Masaru, TANAKA Yoshiaki, YOSHIDA Chikashi, KONDO Koji, MATSUMOTO Takeshi
Journal of The Japan Forest Engineering Society   22(3) 121-132   2007
We analyzed the time-oriented and hierarchic characteristics of a road network in a watershed area using network analysis. Toei and Shitara towns (upper stream), Horai town (middle stream), and Shinshiro city (lower stream) in the Higashimikawa Fo...
OKA Masaru, NAKAZAWA Masahiko, TANAKA Yoshiaki, YOSHIDA Chikashi, KONDO Koji, KARIYA Yoshihiro
Journal of The Japan Forest Engineering Society   22(3) 163-170   2007
NAKAZAWA Masahiko, IWAOKA Masahiro, YOSHIDA Chikashi, JINKAWA Masaki, YAMADA Yozo, TSUCHIYA Asako
Journal of The Japan Forest Engineering Society   21(4) 257-260   2007
OTSUJI Satoshi, IWAOKA Masahiro, MINEMATS Hirohiko, OZAWA Masayuki, NAKAZAWA Masahko
Journal of The Japan Forest Engineering Society   21(4) 261-264   2007
AKISAWA Atsushi, KOBAYASHI Hisashi, NODA Reiji, IWAOKA Masahiro, NAKAZAWA Masahiko
Proceedings of the Annual Meeting of Japan Society of Energy and Resources   25 13-16   Jun 2006
NAKAZAWA Masahiko, YOSHIDA Chikashi, JINKAWA Masaki, YAMADA Yozo, TSUCHIYA Asako, IWAOKA Masahiro
Journal of The Japan Forest Engineering Society   21(2) 133-140   2006
NAKAZAWA Masahiko, IWAOKA Masahiro, MINEMATSU Hirohiko, OZAWA Masayuki
Journal of The Japan Forest Engineering Society   21(3) 205-210   2006
We analyzed the variation in production of logging residues based on logging systems, by examining data on logging by forestry enterprises in Yamanashi prefecture for the past five years. At present, 1/2 of the cut volume, including stems and shoo...
YOSHIDA Chikashi, JINKAWA Masaki, KONDO Koji, IMATOMI Yuki, NAKAZAWA Masahiko, TSUCHIYA Asako, YAMADA Yozo
Journal of The Japan Forest Engineering Society   21(3) 211-217   2006
NAKAZAWA Masahiko
Nagoya University forest science   (24) 85-124   Dec 2005
本研究は,木材生産に主眼を置いて,理論・技術論先行で検討されてきた森林基盤に対し,森林管理活動に実際にどのように利用されたか,森林施業における実態的見地から再評価することを試みた。 また,森林の流域管理システムにおいて,川上から川下まで一体となった森林管理の推進には市町村の連携が必要であるが,森林整備と基盤整備の計画・実施主体である市町村の枠組みに制約されており,流域単位の基盤整備に基づいた森林整備システムの構築を試みた。 そのために,愛知県北設楽郡東栄町を対象に,森林整備と基盤整備に関す...
NAKAZAWA Masahiko, MATSUMOTO Takeshi, YAMADA Yozo, KONDO Minoru
Journal of The Japan Forest Engineering Society   20(2) 71-82   2005
We planned road routes and assigned road construction priorities for the next decade based on forest operations conducted during the previous decade in Toei, Aichi Prefecture, Japan. Five basic forest operations conducted between 1991 and 2000 wer...
NAKAZAWA Masahiko, MATSUMOTO Takeshi, YAMADA Yozo
J. Jpn. For. Soc.   9(3) 187-193   Aug 2004
NAKAZAWA Masahiko, MATSUMOTO Takeshi, YAMADA Yozo
Journal of The Japan Forest Engineering Society   19(3) 205-216   2004
The relationship between forest improvements and road access was analyzed in Shitara and Toei, Aichi Prefecture, Japan. Public, forest, and strip roads, and five basic forest operations - planting, weeding, pruning, cleaning, and thinning - conduc...

Misc

 
NAKAZAWA Masahiko
森林利用学会誌 = Journal of the Japan Forest Engineering Society   29(4) 223-226   2014
NAKAZAWA Masahiko, SUZUKI Hidenori, SAITO Masashi, INOMATA Yuta, MUNEOKA Hiroko, SHIRASAWA Hiroaki
森林利用学会誌   28(3) 215-216   Jul 2013
中澤 昌彦
機械化林業 = Journal of the Forestry Mechanization Society   (708) 1-6   Nov 2012
伊藤 崇之, 中澤 昌彦, 鈴木 秀典
機械化林業   0(700) 23-34   Mar 2012
伊藤 崇之, 中澤 昌彦, 鈴木 秀典
機械化林業   (697) 15-26   Dec 2011
中澤 昌彦
Journal of the Forestry Mechanization Society   (694) 7-12   Sep 2011
NAKAZAWA Masahiko
Journal of the Japan Forest Engineering Society   25(3) 174-180   Jul 2010
NAKAZAWA Masahiko, SAKAI Hideo, HIROBE Shinji, TANAKA Yoshiaki, TASAKA Toshiaki, IWAOKA Masahiro, NITAMI Toshio
Journal of the Japan Forest Engineering Society   25(3) 169-173   Jul 2010
NAKAZAWA Masahiko
Journal of the Japan Forest Engineering Society   24(3) 111-115   Dec 2009
NAKAZAWA Masahiko, KUBOYAMA Hirofumi
Journal of the Japan Forest Engineering Society   24(2) 65-68   Aug 2009
NAKAZAWA Masahiko
Journal of the Japan Forest Engineering Society   23(2) 107-111   Aug 2008
NAKAZAWA Masahiko
Journal of the Japan Forest Engineering Society   22(3) 217-220   Dec 2007
中澤 昌彦
Nagoya University forest science   (24) 124-126   Dec 2005

Conference Activities & Talks

 
Sasaki Shozo, Kuramoto Shigeo, Nakazawa Masahiko, Yamada Takeshi
The Japanese Forest Society Congress   2019   
<p>[in Japanese]</p>
Oya Shinjiro, Nakazawa Masahiko, Inomata Yuta, Jinkawa Masaki, Miyazaki Takayuki, Takano Tsuyoshi, Toda Kenichiro, Yanagisawa Kenichi, Nishioka Yasuhisa
The Japanese Forest Society Congress   2019   
<p>[in Japanese]</p>
Taki Seishiro, Nakazawa Masahiko, Akamatsu Haruto
The Japanese Forest Society Congress   2019   
<p>[in Japanese]</p>
Nakata Chisa, Itaya Akemi, Nakazawa Masahiko, Yoshida Chikashi
The Japanese Forest Society Congress   2019   
<p>[in Japanese]</p>
Nakazawa Masahiko, Taki Seishiro, Uemura Takumi, Akamatsu Haruto
The Japanese Forest Society Congress   2019   
<p>[in Japanese]</p>
Nakazawa Masahiko, Kanazawa Yutaka, Shirai Norio, Matsumura Yukari, Muneoka Hiroko, Uemura Takumi, Yoshida Chikashi, Taki Seishiro, Ikami Yuji, Fujimoto Kiyohiko, Tanaka Wataru
The Japanese Forest Society Congress   2018   
<p>[in Japanese]</p>
Oya Shinjiro, Shimizu Kayo, Nakazawa Masahiko, Taki Seishiro, Kuramoto Shigeo
The Japanese Forest Society Congress   2018   
<p>[in Japanese]</p>
Taki Seishiro, Nakazawa Masahiko, Uemura Takumi, Yoshida Chikashi, Jinkawa Masaki, Oya Shinjiro, Akamatsu Haruto
The Japanese Forest Society Congress   2018   
<p>[in Japanese]</p>
Yoshida Chikashi, Morooka Noboru, Furukawa Kuniaki, Sasaki Tatsuya, Michinaka Tetsuya, Fujimoto Kiyohiko, Nakazawa Masahiko, Taki Seishiro, Uemura Takumi, Jinkawa Masaki, Nakashima Yasuo
The Japanese Forest Society Congress   2018   
<p>[in Japanese]</p>
Suzuki Hidenori, Yamaguchi Satoshi, Muneoka Hiroko, Sasaki Tatsuya, Tanaka Yoshiaki, Nakazawa Masahiko, Jinkawa Masaki, Zushi Kotaro
The Japanese Forest Society Congress   2018   
<p>[in Japanese]</p>
Nakazawa Masahiko, Miyazaki Takayuki, Sasaki Tatsuya, Yoshida Chikashi, Uemura Takumi, Suzuki Hidenori, Oya Shinjiro, Toda Kenichiro, Majima Tatsuya, Yanagisawa Nobuyuki
The Japanese Forest Society Congress   2017   
<p>[in Japanese]</p>
Suzuki Hidenori, Ito Takayuki, Yamaguchi Hirokazu, Jinkawa Masaki, Zushi Kotaro, Yamaguchi Satoshi, Muneoka Hiroko, Nakazawa Masahiko, Sasaki Tatsuya, Yoshida Chikashi, Uemura Takumi, Tanaka Yoshiaki, Inomata Yuta
The Japanese Forest Society Congress   2017   
<p>[in Japanese]</p>
SASAKI Tatsuya, NAKAZAWA Masahiko, YOSHIDA Chikashi, UEMURA Takumi, MIYAZAKI Takayuki, MAJIMA Tatsuya, Oya Shinjiro
Proceedings of the Conference on Biomass Science   2017   
<p>As the energy use from woody biomass is increased woody biomass supply from softwood logs only may not be sufficient. The necessity of cutting hardwood trees such as oak is now increasing because of an increase in the damage caused by Japanese ...
YOSHIDA Chikashi, SASAKI Tatsuya, NAKAZAWA Masahiko, UEMURA Takumi, JINKAWA Masaki, NAKASHIMA Yasuo, MOROOKA Noboru
Proceedings of the Conference on Biomass Science   2017   
<p>We have been investigating a new production system for forest biomass, the &quot;integrated wood logging system,&quot; in which the wood logs are forwarded without being cut into butt logs and stem butts of logging residues (e.g., stump logs) d...
Nakazawa Masahiko, Yoshida Chikashi, Sasaki Tatuya, Uemura Takumi, Ito Takayuki, Oya Shinjiro
The Japanese Forest Society Congress   2016   
[in Japanese]
Sasaki Tatsuya, Uemura Takumi, Ito Takayuki, Yoshida Chikashi, Nakazawa Masahiko, Torii Atsushi
The Japanese Forest Society Congress   2016   
[in Japanese]
Yoshida Chikashi, Sasaki Tatsuya, Nakazawa Masahiko, Uemura Takumi, Jinkawa Masaki, Ikami Yuji, Nishizono Tomohiro, Kuboyama Hirofumi, Taki Seishiro, Takata Katsuhiko
The Japanese Forest Society Congress   2016   
[in Japanese]
Uemura Takumi, Nakazawa Masahiko, Kato Hideo, Matsumura Yukari, Fujita Kazuhiko, Tanaka Seiichiro, Yoshida Chikashi, Sasaki Tatsuya, Nagao Hirofumi, Harada Masaki, Ido Hirofumi, Ogiso Jyunko, Ikami Yuji, Fujimoto Kiyohiko, Yogi Kenzo, Kanazawa Yutaka
The Japanese Forest Society Congress   2016   
[in Japanese]
Nozue Naoki, Watai Jun, Hakamata Tetsuji, Kondo Akira, Nakazawa Masahiko, Sasaki Tatsuya, Ono Kazuhiro
The Japanese Forest Society Congress   2016   
[in Japanese]
Yamaguchi Hirokazu, Yamada Takeshi, Sasaki Shozo, Utsugi Hajime, Saito Takehiro, Uemura Takumi, Suzuki Hidenori, Nakazawa Masahiko
The Japanese Forest Society Congress   2016   
[in Japanese]
Nakazawa Masahiko, Suzuki Hidenori, Uemura Takumi, Yamaguchi Hirokazu, Kuramoto Shigeo, Tsuyama Ikutaro, Sasaki Shozo, Utsugi Hajime, Saito Takehiro
The Japanese Forest Society Congress   2015   
[in Japanese]
Sasaki Tatsuya, Uemura Takumi, Yoshida Chikashi, Nakazawa Masahiko, Iwata Wakana, Yashiro Tadayuki, Chugun Masakazu, Sudo Hiroshi
The Japanese Forest Society Congress   2015   
[in Japanese]
Kitahara Fumiaki, tanaka yoshiaki, yoshida chikashi, nakazawa masahiko, uemura takumi, ito takayuki, suzuki hidenori, mitsuda yasushi, tarumi aki
The Japanese Forest Society Congress   2015   
[in Japanese]
Suzuki Hidenori, Nakazawa Masahiko, Uemura Takumi, Kuramoto Shigeo, Tsuyama Ikutaro, Sasaki Syozo
The Japanese Forest Society Congress   2015   
[in Japanese]
Yoshida Chikashi, Sasaki Tatsuya, Nakazawa Masahiko, Jinkawa Masaki, Uemura Takumi, Ikami Yuji, Kuboyama Hirofumi, Furukawa Kuniaki, Usuda Hisao, Watada Tomohiro
The Japanese Forest Society Congress   2014   
[in Japanese]
Sasaki Tatsuya, Nakazawa Masahiko, Yoshida Chikashi, Jinkawa Masaki, Uemura Takumi, Yamaguchi Hirokazu, Suzuki Hidenori, Oya Shinjiro, Toda Kenichiro, Takano Tsuyoshi
The Japanese Forest Society Congress   2014   
[in Japanese]
Suzuki Hidenori, Nakazawa Masahiko, Uemura Takumi, Sasaki Syozo
The Japanese Forest Society Congress   2014   
[in Japanese]
Nakazawa Masahiko, Yoshida Chikashi, Sasaki Tatsuya, Uemura Takumi, Suzuki Hidenori, Yamaguchi Hirokazu, Oya Shinjiro, Toda Kenichiro, Takano Tsuyoshi, Iwaoka Masahiro
The Japanese Forest Society Congress   2014   
[in Japanese]
Toda Kenichiro, Kondo Michiharu, Oya Shinjiro, Suzuki Hidenori, Uemura Takumi, Nakazawa Masahiko, Sasaki Tatsuya, Yoshida chikashi, Jinkawa Masaki, Takano Tsuyoshi
The Japanese Forest Society Congress   2013   
【目的】ホイール式の林内走行型車両は林内での作業性が良く,伐倒,集材作業の効率化が期待できるが,クローラ式に比べ接地圧が高いため車両の走行が林地土壌へ与える影響や,トラフィカビリティー(車両の走行に耐えうる地面の能力)の低下等が懸念される。特に,繰り返し走行する場合では,轍が深くなって車両の走行が不可能となる場合もあり,作業における重要な課題となっている。そこで,繰り返し走行による土壌への影響を把握するため,走行回数の異なる地点での土壌断面調査を実施した。【方法】試験地は長野県信濃町で,火...
Oya Shinjiro, Kondo Michiharu, Toda Kenichiro, Nakazawa Masahiko, Yoshida Chikashi, Sasaki Tatsuya, Uemura Takumi, Yamaguchi Hirokazu, Suzuki Hidenori, Jinkawa Masaki, Takano Tsuyoshi
The Japanese Forest Society Congress   2013   
【目的】近年,我が国では欧州諸国等から先進的な林業機械が導入され新しい作業システムの構築とその検証が進められている。本研究では北欧製ホイール式ハーベスタ&フォワーダシステムを含む4種の作業システムにより列状間伐を実施し残存木に及ぼす影響を調査した。【方法】上下を作業道で平行に挟まれたスギ人工林(立木密度1400本/ha,平均斜度15°,斜面長110m)において,最大傾斜方向に7本の伐採列を設定した(伐採列幅3m,残存列幅6m)。これらの列で①ホイール式ハーベスタ&フォワーダ(北欧製先進的機...
UEMURA Takumi, SHIMASE Takuya, SASAKI Syozo, NAKAZAWA Masahiko, SUZUKI Hidenori, SASAKI Tatsuya
The Japanese Forest Society Congress   2013   
ハーベスタの高機能化が進んでいる。測尺,測径精度の向上に加え,幹曲線を元にした採材支援を行える機種がある。さらに通信機能を備えて需要側の要求を伐採作業に反映することが海外で行われている。日本でハーベスタの情報技術を利用するにあたり,現状の問題点を聞き取り調査し,伐採業者が必要としている機能を検討した。 現状では需要側あるいは発注側から生産現場に要求伝達する頻度は少なく,作業開始時に採材寸法や目標生産量が決まっていることが多い。通信機能とそれに伴う採材支援機能を生かすには,ハーベスタ以外の...
Sasaki Shozo, Kuramoto Shigeo, Yamaguchi Takehiro, Uemura Takumi, Nakazawa Masahiko, Suzuki Hidenori
The Japanese Forest Society Congress   2013   
緩中傾斜地の多い北海道では、近年ハーベスタを直接林内に導入して伐木造材作業を行う事例が増加している。この作業は生産性が高く、労働安全性にも優れているが、機械が林内走行できること、林地を大きく損傷しないことなどが必要である。本研究ではその導入条件を明らかにするため、ハーベスタによって列状間伐を実行した数カ所の現場において、地形、林分、間伐仕様や生産性を調査した。 傾斜が25°以下の地形では作業はほぼ安定して実施されており、部分的にはそれ以上の傾斜地でも作業が行われていたが、以前測定された最大...
Ito Takayuki, Tanaka Yoshiaki, Uemura Takumi, Yoshida Chikashi, Sasaki Tatsuya, Suzuki Hidenori, Nakazawa Masahiko, Yamasaki Toshihiko
The Japanese Forest Society Congress   2013   
本研究では主索式タワーヤーダの作業時間観測を行い,架設撤去時間を明らかにして効率的な作業方法を検討した。調査地は高知県香美市の民有林で,2011~12年に計4線分の調査を行った。使用機械は香美森林組合が所有するオーストリアMM-Forsttechnik社のWanderfalkeタワーヤーダとSherpa-U3t搬器である。分析の結果,2011年は架設が47.8および83.1人時,撤去が11.9人時を要していた一方,2012年は架設が18.8および16.8人時,撤去が7.6および10.3人時...
Yoshida Chikashi, Sasaki Tatsuya, Nakazawa Masahiko, Jinkawa Masaki, Ikami Yuji, Fujimoto Kiyohiko, Amano Tomomasa, Nishizono Tomohiro, Takada Katsuhiko
The Japanese Forest Society Congress   2013   
用材とバイオマスを併せた森林資源のトータル収穫システムの開発を目的に,集材方式の異なる間伐試験を行い,用材およびバイオマス搬出の作業効率を比較した。試験は,秋田森林管理署管内の48年生スギ人工林に0.05haのプロットを3か所設定し,全木,全幹,短幹による間伐作業を行った。作業システムは,チェーンソー伐木,グラップル木寄せ,プロセッサ造材,運材車搬出であり,バイオマスは,造材時に発生した作業路上の枝条・端材を対象として,全幹プロットでは端材,全木プロットでは端材と枝条を搬出した。その結果,...
Sasaki Tatsuya, Fujimoto Kiyohiko, Jinkawa Masaki, Yoshida Chikashi, Nakazawa Masahiko, Amano Tomomasa, Uemura Takumi, Furukawa Kuniaki, Takata Katsuhiko
The Japanese Forest Society Congress   2013   
スギ林地残材を林地からエネルギープラントへ供給するための最適なシステムを構築する上で必要なパラメータを明らかにすることを目的として、自走式および定置型の破砕機について異なる破砕サイズでの一次破砕工程の生産性、コストを明らかにする。自走式破砕機はタブ式・破砕式でエンジン出力は107、147kW、定置型破砕機は上部投入式・一軸破砕機で45、75、132kWを用いた。破砕した材料は、端材、末木枝条である。以上の機種および破砕材料について、丸型・穴径30mmおよび丸型・穴径50mmのスクリーンを用...
Suzuki Hidenori, Nakazawa Masahiko, Sasaki Tatsuya, Yoshida Chikashi, Uemura Takumi, Jinkawa Masaki, Sasaki Shozo, Toda Kenichiro, Oya Shinjiro, Kondo Michiharu, Takano Tsuyoshi
The Japanese Forest Society Congress   2013   
ホイール式の車両は,クローラ式よりも接地圧が高くなるため,林内走行車両による林地土壌への影響が懸念される。このような機械では,林内を自由に走行して各走行路の走行回数を抑え,影響を分散するのか,走行回数は多くなるものの,走行路を固定して影響を限定した範囲にとどめるのか,環境的,作業効率的観点から十分に検討しなければならない。これまで黒色土において自由走行したときの林地への影響を検討してきたが,今回は,同様の条件で繰り返し走行を行ったときの影響を調査した。また,黒色土とは異なる土壌での自由走行...
Nakazawa Masahiko, Yoshida Chikashi, Sasaki Tatsuya, Jinkawa Masaki, Tanaka Yoshiaki, Suzuki Hidenori, Uemura Takumi, Ito Takayuki, Yamasaki Toshihiko
The Japanese Forest Society Congress   2013   
【目的】本研究では,急峻で複雑な地形と大径材搬出への適用が期待できる欧州製タワーヤーダを用いた作業システムを開発することを目的に,間伐作業の功程調査を行った。前報で架線下の上荷集材作業について報告したので,本報では上荷横取り集材作業を中心に報告する。【方法】搬器にShelpa U-3toを搭載したMM社製WANDERFALKE U-AM-2toを用いて,上荷横取り集材作業を実施し,時間分析を行なった。【結果】魚骨状に4列伐採し,27サイクル,28本,計17.87m3を集材した。平均荷掛量は...
AMANO Tomomasa, HIRAI Keizo, YAMADA Tsuyoshi, NOGUCHI Shoji, ISONO Masahiro, SHIBATA Mitsue, YAGIHASHI Tsutomu, KODANI Eiji, HITSUMA Gaku, ONO Kenji, SHIMODA Naoyoshi, NIIYAMA Kaoru, YAMAMOTO Koichi, JINKAWA Masaki, YOSHIDA Chikashi, SASAKI Tatsuya, NAKAZAWA Masahiko, NISHIZONO Tomohiro, IKAMI Yuji, FUJIMOTO Kiyohiko, INAGAKI Yoshiyuki, TAKADA Katsuhiko
Proceedings of the Conference on Biomass Science   2012   
Forestry and Forest Products Research Institute (FFPRI) set up the examination forest with three degrees of intensity of biomass-harvesting on periodic thinning from Cyprtmeria japonica Plantations in Senboku-City, Akita Prefecture and start obser...
N M, Matsumoto Takeshi, Oka Masaru, Yoshida Chikashi, Sasaki Tatsuya
The Japanese Forest Society Congress   2011   
Mozuna Masahiro, Jinkawa Masaki, Yoshida Chikashi, Nakazawa Masahiko, Iwaoka Masahiro, Furukawa Kuniaki, Usuda Hisao, Kusano Yoshiyuki, Tanaka Seiichiro
The Japanese Forest Society Congress   2011   
Yoshida Chikashi, Nakazawa Masahiko, Mozuna Masahiro, Jinkawa Masaki, Sasaki Tatsuya, Oka Masaru, Furukawa Kuniaki, Usuda Hisao, Iwaoka Masahiro, Kusano Yoshiyuki, Tanaka Seiichiro
The Japanese Forest Society Congress   2011   
Sasaki Tatsuya, Uemura Takumi, Oka Masaru, Yoshida Chikashi, Nakazawa Masahiko
The Japanese Forest Society Congress   2011   
Oka Masaru, Sasaki Tatsuya, Nakazawa Masahiko, Yoshida Chikashi, Yamada Takeshi, Ochiai Yukihito, Imatomi Yuki, yamaguchi hirokazu
The Japanese Forest Society Congress   2011   
OKA Masaru, SASAKI Tatsuya, NAKAZAWA Masahiko, YAMADA Takeshi, OCHIAI Yukihito, IMATOMI Yuki
The Japanese Forest Society Congress   2011   
Toda Kenichiro, Oya Shinjiro, Kondo Michiharu, Takano Tsuyoshi, Suzuki Hidenori, Jinkawa Masaki, Nakazawa Masahiko, Sasaki Tatsuya, Uemura Takumi, Yoshida Chikashi
The Japanese Forest Society Congress   2011   
Sasaki Shozo, Kuramoto Shigeo, Uemura Takumi, Nakazawa Masahiko, Shimase Takuya, Takahashi Masayoshi
The Japanese Forest Society Congress   2011   
Suzuki Hidenori, Jinkawa Masaki, Nakazawa Masahiko, Sasaki Tatsuya, Uemura Takumi, Yoshida Chikashi, Toda Kenichiro, Oya Shinjiro, Kondo Michiharu, Takano Tsuyoshi
The Japanese Forest Society Congress   2011   
Yoshida Chikashi, Nakazawa Masahiko, Mozuna Masahiro, Jinkawa Masaki, Sasaki Tatsuya, Furukawa Kuniaki, Usuda Hisao, Iwaoka Masahiro, Kusano Yoshiyuki, Tanaka Seiichiro, Oya Shinjiro
The Japanese Forest Society Congress   2011   
Nakazawa Masahiko, Jinkawa Masaki, Yoshida Chikashi, Sasaki Tatsuya, Tanaka Yoshiaki, Suzuki Hidenori, Uemura Takumi, Ito Takayuki, Yamasaki Toshihiko, Oya Shinjiro, Furukawa Kuniaki, Imatomi Yuki
The Japanese Forest Society Congress   2011   
Mozuna Masahiro, Jinkawa Masaki, Yoshida Chikashi, Nakazawa Masahiko, Furukawa Kuniaki, Usuda Hisao, Morooka Masami, Morooka Noboru
The Japanese Forest Society Congress   2010   

Research Areas