Faculty Profiles - YAMAMOTO, Kazukiyo

Papers - YAMAMOTO, Kazukiyo

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Integrating personal laser scanning with uncrewed aerial vehicle-based photogrammetry or laser scanning for accurate stem volume estimation in temperate coniferous forests. Reviewed International journal

Hoshikawa, T., Suzuki, S., Yajima, J., Mochizuki, H., & Yamamoto, K.

Journal of Forest Research Vol. 29 ( 5 ) page： 1 - 9 2024.4

深層学習を用いたUAV空撮画像からの植栽木自動確認手法の開発 ―撮影時期ごとの検出精度の検討― Reviewed

大槻峻介, 山本一清

日本森林学会誌 Vol. 106 ( 2 ) page： 31 - 36 2024.4

The penetration rate of laser pulses transmitted from a small-footprint airborne LiDAR: a case study in closed canopy, middle-aged pure sugi (Cryptomeria japonica D. Don) and hinoki cypress (Chamaecyparis obtusa Sieb. et Zucc.) stands in Japan. Reviewed

Tomoaki Takahashi, Kazukiyo Yamamoto, Yosuke Miyachi, Yoshimichi Senda, Masashi Tsuzuku

Journal of Forest Research Vol. 11 ( 2 ) page： 117-123 2006.4

Predicting individual stem volumes of sugi (Cryptomeria japonica D. Don) plantations in mountainous areas using small-footprint airborne LiDAR Reviewed

Tomoaki Takahashi, Kazukiyo Yamamoto, Yoshimichi Senda, Masashi Tsuzuku

Journal of Forest Research Vol. 10 ( 4 ) page： 305-312 2005.8

Estimating individual tree heights of sugi (Cryptomeria japonica D. Don) plantations in mountainous areas using small-footprint airborne LiDAR Reviewed

Tomoaki Takahashi, Kazukiyo Yamamoto, Yoshimichi Senda, Masashi Tsuzuku

Journal of Forest Research Vol. 10 ( 2 ) page： 135-142 2005.4

Language：English Publishing type：Research paper (scientific journal)

Recently, it was shown that individual tree heights could be accurately estimated using small-footprint airborne light detection and ranging (LiDAR) remote sensing. Because most of the areas studied previously were limited to flat terrain, we investigated the accuracy of LiDAR-derived individual tree height estimates for different types of topographical features in mountainous forests with a steeper and more complex topography. Several middle-aged (40–50 years old) sugi (Cryptomeria japonica D. Don) plantations are found in the mountainous regions in Japan; hence, we chose 48-year-old sugi plantations to investigate the accuracy of these estimates. The surveyed area was divided into three types of topographical features; steep slope (mean slope SD; 37.6° 5.8°), gentle slope (15.6° 3.7°), and gentle yet rough terrain (16.8° 7.8°). Before estimating tree heights, the number of detected trees within each topographical feature was researched. In each of these terrains, the percentage of trees detected correctly was 74%, 86%, and 92%; the average error between LiDAR-derived and field-measured tree heights was 0.227 m, 0.473 m, and 0.183 m; and the accuracy of the
LiDAR-derived tree height estimates, given as root mean square error (RMSE), was 0.901 m, 0.846 m, and 0.576 m,
respectively. Consequently, the procedure presented in this
study could detect most canopy trees and estimate individual tree heights with an accuracy better than 1 m, even in a forest with a mean slope angle of approximately 38°; thus, indicating that small-footprint airborne LiDAR will be a useful tool for accurately estimating the heights of individual canopy trees in sugi plantations in mountainous
areas.

Influence of Topographic Conditions on Teak Growth Performance in Mountainous Landscapes of Lao PDR Reviewed International coauthorship

Vongkhamho Simone, Imaya Akihiro, Yamamoto Kazukiyo, Takenaka Chisato, Yamamoto Hiroyuki

FORESTS Vol. 13 ( 1 ) 2022.1

Comparison of models for estimating stem surface area of coniferous trees grown in old-growth natural forests Reviewed

Akio Inoue , Ryota Koyama , Kazuki Koshikawa & Kazukiyo Yamamoto

Journal of Forest Research Vol. 26 ( 1 ) page： 1 - 6 2021.1

Correlations among Tree Quality, Stand Characteristics, and Site Characteristics in Plantation Teak in Mountainous Areas of Lao PDR

Vongkhamho Simone, Imaya Akihiro, Takenaka Chisato, Yamamoto Kazukiyo, Yamamoto Hiroyuki

FORESTS Vol. 11 ( 7 ) 2020.7

地上レーザスキャナによる樹高推定のための望高法の改良 Reviewed

越河一樹・太田徹志・溝上展也・山本一清・井上昭夫

日本森林学会誌 Vol. 102 ( 2 ) page： 133 - 138 2020.4

Assessing spatially distributed infiltration capacity to evaluate storm runoff in forested catchments: Implications for hydrological connectivity

Miyata Shusuke, Gomi Takashi, Sidle Roy C., Hiraoka Marino, Onda Yuichi, Yamamoto Kazukiyo, Nonoda Toshiro

SCIENCE OF THE TOTAL ENVIRONMENT Vol. 669 page： 148 - 159 2019.6

Development of Single Tree Classification Method Using Airborne LiDAR Reviewed

Vol. 100 ( 5 ) page： 149-157 2018.12

航空機LiDARによる森林計測手法 Invited Reviewed

山本一清

レーザー研究 Vol. 44 ( 5 ) page： 326-330 2016.5

Using airborne LiDAR to determine total sapwood area for estimating stand transpiration in plantations Reviewed

Takami Saito, Kazukiyo Yamamoto, Misako Komatsu, Hiroki Matsuda, Shuji Yunohara, Hikaru Komatsu, Makiko Tateishi, Yang Xiang, Kyoichi Otsuki and Tomo'omi Kumagai

Hydrological Processes Vol. 29 ( 24 ) page： 5071-5087 2015.11

Estimation of relative illuminance within forest using small-footprint airborne LiDAR Reviewed

Yamamoto, K., Murase, Y., Etou, C. and Shibuya, K.

Journal of Forest Research Vol. 20 ( 3 ) page： 321-327 2015.3

Applicability of the hemispherical photography to leaf area index estimation in a stand of bamboo, Phyllostachys pubescens Reviewed

Inoue A, Yamamoto K, Mizoue N, Sakuta K, Otsuki K

Journal of Forest Planning Vol. 19 ( 2 ) page： 53-59 2014

Simple Model for Estimating Light Environment in Strip Clear-cutting Stands. Reviewed

Akio Inoue, Hanako Takaoka, Nobuya Mizoue, Tetsuji Ota, Kotaro Sakuta, Kazukiyo Yamamoto

Journal of the Japanese Forest Society Vol. 95 ( 5 ) page： 245-252 2013.10

A method for estimating the stand density in an even-aged pure stand using hemispherical photography Reviewed

Akio Inoue and Kazukiyo Yamamoto

Journal of Forest Planning Vol. 19 page： 27-29 2013

デジタルカメラとスキャナーを用いたヒノキ樹冠のシュートフェノロジーおよび個葉生理活性の観測 Reviewed

増井僚,小林元, 山本一清,井手玲子

中部森林研究 Vol. 60 page： 43-44 2012.3

Relationships of light environment to stand attributes in a stand of bamboo, Phyllostachys pubescens Reviewed

Akio Inoue, Haruka Tateishi, Kotaro Sakuta, Kazukiyo Yamamoto, Nobuya Mizoue, Fumiaki Kitahara

Ecological Engineering Vol. 38 ( 1 ) page： 135-139 2012.1

Estimation of mean tree height using small-footprint airborne LiDAR without a digital terrain model Reviewed

Kazukiyo Yamamoto, Tomoaki Takahashi, Yousuke Miyachi, Naoto Kondo, Shinichi Morita, Motohiko Nakao, Takashi Shibayama, Yoshiyuki Takaichi, Masashi Tsuzuku and Naoaki Murate

Journal of Forest Research Vol. 16 ( 6 ) page： 425-431 2011.12

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Papers - YAMAMOTO, Kazukiyo