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1. The benefit of wrapping trees in biodegradable material netting to protect against bark stripping by bears extends to surrounding stands

Author:
Kobashikawa, Shoko; Trentin, Bruna; Koike, Shinsuke
Source:
Forest ecology and management 2019 v.437 pp. 134-138
ISSN:
0378-1127
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Ursus thibetanus; bark; biodegradability; conifers; netting; plantations; regression analysis; trees; Japan
Abstract:
... Bark stripping by Asian black bears (Ursus thibetanus) has a serious impact on conifer plantations in Japan. Prevention strategies tend to be implemented on a tree-by-tree basis by wrapping standing trees in biodegradable tape or netting. It remains unclear, however, whether installing these materials has a beneficial effect on untreated trees in surrounding stands. The aim of this study was to cl ...
DOI:
10.1016/j.foreco.2019.01.037

2. Greenhouse gas emissions from round wood production in Japan

Author:
Nakano, Katsuyuki; Shibahara, Naoki; Nakai, Toshifumi; Shintani, Keisuke; Komata, Hirotaka; Iwaoka, Masahiro; Hattori, Nobuaki
Source:
Journal of cleaner production 2018 v.170 pp. 1654-1664
ISSN:
0959-6526
Subject:
Abies sachalinensis; Chamaecyparis obtusa; Cryptomeria japonica; Larix kaempferi; bark; carbon sequestration; cradle-to-gate; energy efficiency; environmental impact; felling; forest roads; forestry; forestry equipment; fuels; greenhouse gas emissions; inventories; labor productivity; land use; planting; seedlings; trees; wood; Japan
Abstract:
... Wood has a long-standing history as an industrial material and fuel. Generic life cycle assessment data is therefore needed to assess the quantitative environmental impact of wood. The aim of this study was to estimate cradle-to-gate greenhouse gas emissions for round wood production of four common Japanese tree species. This study focused on Japanese cedar (Cryptomeria japonica), hinoki cypress ( ...
DOI:
10.1016/j.jclepro.2016.10.024

3. Survey of Typhoon-Damaged Coniferous Forests and Strength Properties of Lumber and Glued Laminated Timber Processed from Damaged Japanese Cedar and Japanese Cypress Trees

Author:
Isao, Toyoshima; Hiroshi, Noguchi; Mariko, Yamasaki; Yasutoshi, Sasaki
Source:
Forest products journal 2018 v.68 no.1 pp. 25-36
ISSN:
0015-7473
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; bark; bending strength; coniferous forests; lumber; modulus of elasticity; modulus of rupture; stand density; surveys; trees; typhoons; Japan
Abstract:
... Typhoon Melor, which occurred in October 2009, damaged much of the forest in the eastern region of Japan's Aichi Prefecture. The damaged trees were primarily planted Japanese cedar (Cryptomeria japónica) and Japanese cypress (Chamaecyparis obtusa) between 40 and 60 years old and were intended for use as structural lumber. The purpose of this study was to investigate the usability of damaged trees ...
DOI:
10.13073/FPJ-D-16-00052

4. Temporal trends in 137Cs concentrations in the bark, sapwood, heartwood, and whole wood of four tree species in Japanese forests from 2011 to 2016

Author:
Ohashi, Shinta; Kuroda, Katsushi; Takano, Tsutomu; Suzuki, Youki; Fujiwara, Takeshi; Abe, Hisashi; Kagawa, Akira; Sugiyama, Masaki; Kubojima, Yoshitaka; Zhang, Chunhua; Yamamoto, Koichi
Source:
Journal of environmental radioactivity 2017 v.178-179 pp. 335-342
ISSN:
0265-931X
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Pinus densiflora; Quercus; accidents; bark; cesium; decontamination; forests; heartwood; nuclear power; power plants; prediction; radioactivity; radionuclides; sapwood; stems; stemwood; temporal variation; trees; Japan
Abstract:
... To understand the changes in radiocesium (¹³⁷Cs) concentrations in stem woods after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, we investigated ¹³⁷Cs concentrations in the bark, sapwood, heartwood, and whole wood of four major tree species at multiple sites with different levels of radiocesium deposition from the FDNPP accident since 2011 (since 2012 at some sites): Japanese cedar ...
DOI:
10.1016/j.jenvrad.2017.09.008

5. Bark-feeding damage of sugi and hinoki cypress caused by sika deer, Cervus nippon: Does the sika deer prefer bark of hinoki cypress to sugi?

Author:
Sano, Akira
Source:
Mammal study 2017 v.42 no.2 pp. 105-110
ISSN:
1348-6160
Subject:
Cervus nippon; Chamaecyparis obtusa; Cryptomeria japonica; bark; debarking; plantations; trees; Japan
Abstract:
... Occurrence of bark-feeding damage by sika deer (Cervus nippon) was examined at 26 mixed plantations comprised of both sugi (Cryptomeria japonica) and hinoki cypress (Chamaecyparis obtusa) in Mie Prefecture, central Japan. There was no significant difference in damage ratios with the tree species in plantations with only slight damage. In plantations with a damage ratio over 5% in either tree speci ...
DOI:
10.3106/041.042.0205

6. 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