Search Results 1-20 of 3995

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Remote Sensing of Plant Fluorescence Spectrum and Lifetime by Laser-induced Fluorescence Lidars

SAITO Yasunori , OMASA Kenji

… The LIFS lidar observation of zelkova tree leaves 20 m away from the lidar showed change of the fluorescence spectra depending on the growth/senescence period which turned to growth information about production, accumulation, and disorganization of pigments occurring inside the leaves. …

Journal of The Remote Sensing Society of Japan 41(Supplement), S1-S10, 2021

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2

Aboveground Biomass and Carbon Sequestration Potential of Tea and Shade Trees in <i>Miang</i> Tea Gardens, an Agroforestry System in Northern Thailand

Sasaki Ayako , Kanzaki Mamoru , Mochizuki Keisuke , Choocharoen Chalathon , Preechapanya Pornchai

… The area utilized for tea tree cultivation was approximately 72% of the total study area, and the remaining 28% was classified as forest patches or abandoned gardens. … However, we suggest that the canopy openness should be maintained at more than 25% to prevent tea leaf growth inhibition. …

Tropics, 2021

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3

Girdling Treatment to Reduce Vigor and Increase Production of High-quality Yellow-skinned 'Koukou' Apples

Matsumoto Kazuhiro , Sato Saki , Fujita Tomomichi , Hayashida Taishi

… We compared the effect on tree growth, flower bud formation and fruit quality over a 4-year field trial using vigorous yellow-skinned 'Koukou' apple trees. … The August girdling reduced the shoot growth by about 6 to 10 cm per shoot and this reduction also restricted secondary extension of the shoots. …

The Horticulture Journal 90(1), 31-37, 2021

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4

Study on Artificial Water Tree Degradation Method for XLPE Power Cables (Part 2):－Proposal of Method for Water Tree Propagation under Continuous Heating and Heat Cycle Conditions－ [in Japanese]

Kurihara Takashi , Misaka Hideki , Takahashi Toshihiro , Takahashi Tsuguhiro

… Factors that were effective for accelerating water tree growth were discussed with the results of thermal, mechanical, and X-ray analyses and an evaluation of oxidation of the XLPE insulation. … In addition, AC withstand voltage tests were performed for the cable samples after 300 days of water tree degradation at 70°C and under the heat cycle condition between room temperature and 70°C.</p> …

IEEJ Transactions on Fundamentals and Materials 141(1), 76-84, 2021

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5

Redeployment of Shoots into Better-Lit Positions within the Crowns of Saplings of Five Species with Different Growth Patterns

Koyama Kohei , Shirakawa Hiroyuki , Kikuzawa Kihachiro

… Background and Objectives: Light foraging by redeploying organs from shaded regions of a tree crown into better-lit regions is considered to apply to both leaves and shoots. … Because of the selective shedding of the shaded shoots, at the end of the growth period the light environment experienced by the shoots that survived until the following spring was similar to that at the early stage of the same growth period. …

Forests 11(12), 1301, 2020-12

IR
6

Material Development of the Career Formation and the Administration: Making the Tree Theory [in Japanese]

北垣郁雄

本稿では、大学でなされる就職支援活動に関し、学生のキャリア形成に関する理論を構築する。そして、それに基づいて教材を開発する。そこでは、人間の成長を樹木の生長に見立ててキャリア形成の規範モデルを作成する。理論の構築のために、樹木生長の公理を定める。その公理は、存在、順序、均衡、可視、可測、相互作用、揺動の7つである。本稿では、これらの説明を行うとともに、"人間"に対応させてその意味を解釈する。　キャ …

嘉悦大学研究論集 = KAETSU UNIVERSITY RESEARCH REVIEW 63(1), 109-121, 2020-10-29

IR
7

Urbanization and Decline of Old Growth Windbreak Trees on Private Homesteads : A Case Study in Ryukyu Island Villages, Japan

Chen Bixia

… To aid in the conservation of old-growth homestead trees in the urban setting on Ryukyu Archipelago, Japan, this article surveys the dimensions and spatial distribution of century-old trees planted as windbreaks along homestead borderlines on Ishigaki Island in the Ryukyu Archipelago and the historical change caused by urban sprawl. …

Forests 11(9), 2020-09-15

IR
8

Light and nutrient limitations for tree growth on young versus old soils in a Bornean tropical montane forest

Aiba Shin-ichiro , Kitayama Kanehiro

Journal of plant research 133(5), 665-679, 2020-09
9

Predicting effects of climate change on productivity and persistence of forest trees

Kramer Russell D. , Ishii H. Roaki , Carter Kelsey R. , Miyazaki Yuko , Cavaleri Molly A. , Araki Masatake G. , Azuma Wakana A. , Inoue Yuta , Hara Chinatsu

… Here, we introduce research presented at the 66th meeting of the Ecological Society of Japan in the symposium "Structure and function of forest canopies under climate change." Old-growth forest carbon stores are the largest and may be the most vulnerable to climate change as the balance between sequestration and emission could easily be tipped. … Integrating whole-tree structural data with physiological data offers a promising avenue for understanding how trees will respond to climatic shifts. …

Ecological Research 35(4), 562-574, 2020-07

IR
10

A new viewpoint on antlers reveals the evolutionary history of deer (Cervidae, Mammalia)

Samejima Yuusuke , Matsuoka Hiroshige

シカの角の枝の相同関係と進化史を解明 --角溝とダイヤグラムを用いた新たな手法--. 京都大学プレスリリース. 2020-06-04.

Scientific Reports (10), 2020-06-02

IR
11

Evaluation of tree growth and wind conditions on tide embankments in Hamamatsu City, Shizuoka Prefecture [in Japanese]

萩野裕章 , 猿田けい

海岸林学会誌 = Journal of the Japanese Society of Coastal Forest 19(1), 3-9, 2020-06
12

Carbon Storage in Old-Growth Homestead Windbreaks of Small Islands in Okinawa : Toward the Sustainable Management and Conservation

Chen Bixia , Wang Yi-Chung

… The aims of the present study were to clarify the ecological functions of carbon storage and the economic value of homestead windbreaks to propose effective conservation strategies for old-growth homestead windbreaks in the face of climate change. … Materials and Methods: On the small islands of Okinawa Prefecture, the dominant tree species used for the homestead windbreaks is fukugi (Garcinia subelliptica Merr.). …

Forests 11(4), 2020-04-16

IR
13

Effect of direct sowing and varietal differences on growth of containerized Japanese cedar (Cryptomeria japonica) and Japanese cypress (Chamaecyparis obtusa) seedlings [in Japanese]

山中豪

三重県林業研究所研究報告 (10), 1-7, 2020-03
14

Tree Theory and Careers Education: The Axioms and the Interpretation [in Japanese]

北垣郁雄

… We deal with a model of careers education normatively by comparing human growth to tree growth. … We here refer to this comparative logic as tree theory. … Environment: A tree grows in two environments; … Order: A tree, in its early stage (that is a seed), stays under-ground before its trunk, stems, and leaves grow over-ground.3. …

大学論集 (52), 67-81, 2020-03

IR DOI
15

Anatomical traits of Cryptomeria japonica tree rings studied by wavelet convolutional neural network

Nakajima T , Kobayashi K , Sugiyama J

… Tree ring analysis is an important field of science, and is vital in modeling the environmental response system of tree growth. … In most cases, analyses have been conducted using one parameter from one tree ring, e.g., ring-width, density, or ratio of stable isotopes. …

IOP Conference Series: Earth and Environmental Science (415), 2020-02

IR
16

Two-dimensional microfibril angle mapping via polarization microscopy for wood classification

Kita Y , Mizuno-Tazuru S , Sugiyama J

… INAFOR EXPO 2019 - International Conference on Forest Products (ICFP) 2019: Adopting the Renewable Bioenergy and Waste Utilization to Support Circular Economy and Sustainable Environment 28 August 2019, Bogor, West Java, IndonesiaA new method is presented for measuring microfibril angles (MFAs) from transverse tree sections by using polarized optical microscopy combined with a liquid-crystal tunable filter. …

IOP Conference Series: Earth and Environmental Science (415), 2020-02

IR
17

Japanese Gengo, Historical Consciousness and Christianity [in Japanese]

平山朝治 , Asaji HIRAYAMA

… Taro OKAMOTO expresses it as the Tree of Life within the Tower of the Sun in the 1970 Exposition. … In addition, Japan's unique evolutionary historical consciousness has been expressed by idols since the period of high economic growth.査読後の著者原稿を登録していたが、2020年2月10日、出版原稿に差し替えた。 …

国際日本研究 = International and advanced Japanese studies 12, 1-22, 2020-02

IR DOI
18

Implementation of an Algorithmic Debugger for Packrat parser Library Woodrat [in Japanese]

坂上知紀 , 前田敦司

Packrat parsingとは，バックトラックのある再帰下降構文解析手法の一種であり，途中結果をメモ化することで，入力サイズに対して線形時間で解析を行うことができる．本研究室では，packrat parsingを用いたRuby用ライブラリWoodratを開発してきた．これを用いて構文解析を行う際にParsing Expression Grammar（PEG）と呼ばれる形式文法を用いるが，PEG …

情報処理学会論文誌プログラミング（PRO） 13(1), 23-23, 2020-01-29

IPSJ
19

IPv6 DoS Attacks Detection Using Machine Learning Enhanced IDS in SDN/NFV Environment

Chia-Wei Tseng , Li-Fan Wu , Shih-Chun Hsu , Sheng -Wang Yu

IEICE Proceeding Series (62), 263-266, 2020

DOI
20

The Effect of Roots Mixed in Soil on the Occurrence of Soil Sickness Syndrome in Japanese Pear [in Japanese]

Toya Tomoaki , Suzuki Takeshi , Fujii Yoshiharu

<p>ニホンナシでは前作樹の残根がいや地現象の発生要因であるかが明らかになっていない．そこで，本研究ではニホンナシ根を混和した土壌のいや地リスクの経時変化に加え，根を混和した土壌に定植したニホンナシ1年生苗木の樹体生育への影響を調査した．まず，ニホンナシ未植栽土壌にニホンナシの生根もしくは乾燥根を混和した区を設け，土壌をニホンナシのいや地リスクを評価できる根圏土壌アッセイ法を用いて経時 …

Horticultural Research (Japan) 19(4), 373-379, 2020

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