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1. A forest biomass yield table based on an empirical model

Author:
Nishizono, Tomohiro; Iehara, Toshio; Kuboyama, Hirofumi; Fukuda, Miki
Source:
Journal of forest research 2005 v.10 no.3 pp. 211-220
ISSN:
1610-7403
Subject:
Cryptomeria japonica; Larix kaempferi; bark; biomass; branches; forests; leaves; models; stem form; stumps; tree and stand measurements; trees; wood; Japan
Abstract:
... We report an empirical model for estimating unutilized wood biomass, and its application to Cryptomeria japonica D. Don and Larix kaempferi in Tohno City, Iwate Prefecture, northeast Japan. Outputs from the model are the quantity of unutilized wood biomass and merchantable volume produced by timber harvest. The unutilized wood biomass is divided into stumps, tops, branches, foliages, small trees, ...
DOI:
10.1007/s10310-004-0133-8

2. Intake of Radionuclides in the Trees of Fukushima Forests 2. Study of Radiocesium Flow to Poplar Seedlings as a Model Tree

Author:
Aoki, Shoko; Nonaka, Miki; Yasukawa, Chisato; Itakura, Masateru; Tsubokura, Masaharu; Baba, Kei’ichi; Ohbayashi, Hiroya; Seyama, Tomoko; Uehara, Iwao; Kaida, Rumi; Taji, Teruaki; Sakata, Yoichi; Hayashi, Takahisa
Source:
Forests 2019 v.10 no.9
ISSN:
1999-4907
Subject:
Populus; abscission; accidents; bark; cambium; cesium; cork; forests; heartwood; leaves; models; nuclear power; potassium; power plants; radionuclides; seasonal growth; seedlings; stems; trees; Japan
Abstract:
... After the nuclear power plant accident in Fukushima, radionuclides were deposited over a large area of local forest. However, almost nothing is known about radionuclide infiltration into trees. Here, we used poplar seedlings as a model to show that radiocesium can enter directly into leaves and bark, moving via ray cells through the symplastic pathways to the xylem and concentrating around the mer ...
DOI:
10.3390/f10090736

3. Spatiotemporal factors affecting bark stripping of conifer trees by Asiatic black bears (Ursus thibetanus) in Japan

Author:
Kobashikawa, Shoko; Koike, Shinsuke
Source:
Forest ecology and management 2016 v.380 pp. 100-106
ISSN:
0378-1127
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Ursus thibetanus; bark; conifers; forest management; foresters; forests; growth rings; managers; models; plantations; temporal variation; tree damage; tree trunk; trees; Japan
Abstract:
... Bark stripping by Asiatic black bears (Ursus thibetanus) has a serious impact on conifer plantations in Japan, resulting in physical damage to the tree trunks and reduction of the value of the timber. The aim of this study was to clarify whether these plantations are more prone to damage by bears at particular times and sites, to more effectively prevent this damaging behavior. The study was condu ...
DOI:
10.1016/j.foreco.2016.08.042

4. TRIPS 2.0: Toward more comprehensive modeling of radiocaesium cycling in forest

Author:
Thiry, Y.; Tanaka, T.; Dvornik, A.A.; Dvornik, A.M.
Source:
Journal of environmental radioactivity 2020 v.214-215 pp. 106171
ISSN:
0265-931X
Subject:
bark; biogeochemistry; branches; data collection; forests; leaves; models; monitoring; radioactive fallout; radioactivity; radionuclides; soil; soil quality; stemwood; trees; Belarus; Japan; Ukraine
Abstract:
... Because internal transfers can play a key role in radiocaesium persistence in trees, a reliable representation of radiocaesium recycling between tree organs in forest models is important for long-term simulations after radioactive fallout in Chernobyl and Fukushima. We developed an upgraded 2.0 version of the initial TRIPS (“Transfer of Radionuclides In Perennial vegetation System”) model involvin ...
DOI:
10.1016/j.jenvrad.2020.106171