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Article type: Cover
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Cover
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Wataru Tanaka
Article type: Article
2008 Volume 17 Issue 1 Pages
1-8
Published: October 27, 2008
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In this study, I sent questionnaires on the forest management of forest owners to clarify their problems and prospects. The following was clarified: 1) the difference to main business of forest owners, whether forest owners manage forestry as main business or not, has an influence on their attitudes of forestry operation and management. 2) forest owners who manage forestry as side line show a tendency to take passive postures for forestry and consign forestry management, because they need not get income from forestry at present. 3) forest owners who don't have successors for forestry tend to choose to plant the broadleaf trees after clearcutting or not to reforest at all. 4) some forest owners who manage forestry as main have intention to increase timber production and purchase forest lands. 5) it would be expected that some large-scale forest owners increase thinned wood products by their own labor force.
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Naohiko Ando
Article type: Article
2008 Volume 17 Issue 1 Pages
9-19
Published: October 27, 2008
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The present study attempts to clarify the conditions that allow forest management by small-sized forest owners in areas adjacent to DID(Densely inhabited district). The experience in Nukata area of Okazaki is provided as an example. In areas adjacent to a DID, most people work during the active periods of their life in manufacturing or service industries, and they often have little interest in forestry. However, the Nukata area, which is within a commutable distance to a DID has conducted forestry activities resulting in some of the highest log sales rates in Japan. A survey of members of the forestry club, which is one of the main forestry activities, showed many of these forest owners have participated in forestry activities on weekends, while keeping a full-time job. Those involved in forestry experiences on weekends continued to work in the forest throughout their senior years. It is assumed that much of the population in the area work in an automobile-related industry, however, these weekend foresters typically work outside that job category. Some of the reasons are assumed to be the long overtime hours in automobile-related industries. An important condition for forestry activities in areas adjacent to DID is that the types of work, allow for weekend forestry. Moreover self-cutting using forestry-machines and forestry management with a long-term vision is necessary.
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Mitsuhiro Nose
Article type: Article
2008 Volume 17 Issue 1 Pages
21-28
Published: October 27, 2008
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As public finance of the local governments confronted with serious situation, it needs to find an adequate investment and implement in the forestry sector. The object of this study was to follow both trends in forestry expenditure and activities, and to bring out factors to make changes and its backgrounds through the analysis of the relationship between budget scale and activities in terms of plantations and building forest roads in Kyoto. Major findings of the study is that total forestry expenditure has been less than GDP of forestry since the early 1980s, and it hadn't contributed the forestry and forest products industry so much. The amount of artificial plantation and thinning management decreased after the quantitative peak of early 1980s and around 1990 respectively. The plantation expenditure was maintained by thinning management compared with plantation activities. Building the forest road project and its expenditure had expanded in middle and latter 1990s temporally, but both of them have increased since the 2000. An unit price of forest road after 1992 surpass significantly by the construction of high standard road called Tanba Kouiki forest road. The source of revenue in forestry expenditure substituted national subsidy and general tax for local credit and others, and it is resulted in not securing the budget scale. Calculating effects on local economy and taking the clear position at development policies are needed.
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Shun-Ichiro Miyashita, Manabu Kusunoki
Article type: Article
2008 Volume 17 Issue 1 Pages
29-32
Published: October 27, 2008
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In order to estimate the phylogenetic placement of hovenia witches' broom (HWB) phytoplasma, we determined the sequence of the 16S rDNA region for HWB phytoplasma. PCR products of approximately 1.4kbp in size were amplified using a phytoplasma-specific primer pair in DNA extracted from infected hovenia leaves, and the sequence of 1367bp of the PCR product was determined. A BLAST search showed that the sequence of HWB phytoplasma was nearly identical (>99.7% similarity) to four sequences of Jujube witches' broom (JWB) phytoplasma, and completely identical to two sequences of JWB phytoplasma. A phylogenetic analysis revealed that HWB phytoplasma was included in a JWB phytoplasmas Glade. These results indicate that HWB phytoplasma is the same as JWB phytoplasma.
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Susumu Kurinobu, Daryono Prehatin, Naiem Mohanmad
Article type: Article
2008 Volume 17 Issue 1 Pages
33-36
Published: October 27, 2008
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A procedure to estimate height-diameter curve which is linked with the growth model for the plantation of Paraserianthes falcataria was examined using the three years' measurements of 32 permanent plots in Pare, Indonesia. In this study, the dimensionless height-diameter curve: H/h=a(D/d)^b was applied to 224 data set of measurements on height and diameter. As a result, the coefficient a was found to be stable at 1.0, while the power coefficient b showed negative correlation with the diameter size. Therefore the height-diameter curve at different age was derived by estimating the power coefficient b with the diameter predicted by the growth model which was comprised of a polymorphic site index equation, reciprocal and self-thinning equations. The estimated height-diameter curve across the three age classes agreed well with the observations which were the average height of the five diameter classes at each age for the three age groups: 3, 4 and 5 years old after planting of different initial density. Contrasting height diameter relationships under different initial densities was described reasonably well with this procedure. These results suggest that the height-diameter curve presented here could be applied in the process for predicting merchantable volume in the plantation of P. falcataria.
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Yoshiyuki Inagaki, Yoshiki Shinomiya, Atsushi Torii
Article type: Article
2008 Volume 17 Issue 1 Pages
37-40
Published: October 27, 2008
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Takeshi Fujiwara
Article type: Article
2008 Volume 17 Issue 1 Pages
41-45
Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
47-
Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
50-51
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
52-53
Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Appendix
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Cover
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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Article type: Cover
2008 Volume 17 Issue 1 Pages
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Published: October 27, 2008
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