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Article type: Cover
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Article type: Cover
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Shigeho Sato, Shiro Okuda, Hiroaki Miyata, Hidehisa Fukata
Article type: Article
2006 Volume 15 Issue 2 Pages
61-68
Published: September 30, 2006
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We analyzed biodiversity monitoring data on criteria and indices of the Montreal Process in the Shimanto Forest Planning Area of Kochi Prefecture, where a case study of sustainable forest management was carried out for 10 years. Three layers (forest planning area, municipalities and concentration study areas) based on differences in scale were assumed. Available indices were picked out of each layer and classified based on intervals of the survey. Four indices on ecosystem diversity, i.e., the area of each forest type, the area of each age class of forest, the area of preserved forest and the area of each age class of preserved forest, were surveyed. Two indices on species diversity, i.e., the number of forest dependent species and the state of the species in the Red Data Book, were surveyed for rare plants, mammals, birds, river fish and three groups of insects (longicorn beetles, ants and dragonflies). The index for genetic diversity was the number of forest dependent species that were declining based on monitoring of dragonflies in concentrated study areas. Thus, a total of 7 indices for biodiversity were applied to the Shimanto Forest Planning Area. These indices were found to be useful for sustainable forest management at the regional level.
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Shigeho Sato, Syuji Yachimori, Yoshinori Kaneshiro
Article type: Article
2006 Volume 15 Issue 2 Pages
69-76
Published: September 30, 2006
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We tried to elucidate the number of forest dependent species and the status of rare species of mammals and birds, which were ones of criteria and indexes by Montreal Process, in the Shimanto Forest Planning Area of Kochi Prefecture, where a case study of sustainable forest management were carried out by Forestry Agency of Japan. We analyzed inventories of mammals and birds, and carried out supplemental survey on the area where the data were too little. Twenty-four mammal species and 107 bird species were treated as forest dependent species in the Shimanto Forest Planning Area. Six mammal rare species and 48 bird rare species in the Red Data Book of Kochi Prefecture were included. The number of forest dependent rare species had positive correlation with the area of old-growth natural forest, which was considered to be important habitat for wildlife.
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Keiji Odani
Article type: Article
2006 Volume 15 Issue 2 Pages
77-82
Published: September 30, 2006
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Hiroki Ito
Article type: Article
2006 Volume 15 Issue 2 Pages
83-86
Published: September 30, 2006
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Masaaki Chiwa, Kousaku Tahara, Hideyuki Ida, Takami Satomura, Tsuyoshi ...
Article type: Article
2006 Volume 15 Issue 2 Pages
87-92
Published: September 30, 2006
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Yoshiki Shinomiya, Nobuyuki Toyota, Keiichi Nakaoka, Shiro Okuda, Yosh ...
Article type: Article
2006 Volume 15 Issue 2 Pages
93-99
Published: September 30, 2006
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The water content of surface soil was investigated by comparing thinning, opening (clear-cutting 25m×25m area) and control plots in Hinoki cypress plantations in Kumakohgen Town, Ehime Prefecture (KUM) and Ino Town, Kochi Prefecture (HGW). Furthermore, the effect of percentage of thinning on soil water dynamics at surface soil from this and authors' previous study was discussed. Thinning (BA reduction 31%) and opening in KUM were conducted in September 2003. The stand of HGW was thinned to 50% in BA in September 2002. Water content of surface soil at 5cm depth was measured by the oven-drying method (collecting 100mL soil core) every month. As a result, the difference of water content at surface soil was 3.0% between control and thinning plots and 0.7% between control and opening plots, after cutting in KUM. The thinning plot had 4.3% higher water content at surface soil than the control plot in HGW. These results suggested that water content at surface soil in Hinoki forests increased with increasing of percentage of cutting and that it did not increase under the condition of high percentage of cutting near clear-cut. The further rise of percentage of cutting was thought to result in the increase of the ground evaporation.
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Eiji Kodani
Article type: Article
2006 Volume 15 Issue 2 Pages
101-108
Published: September 30, 2006
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A forest navigation system, using handy GPS (Global Positioning System) incorporated with forest maps for forest field investigation was developed. Forest map data were classified into two types: temporary map data and permanent map data. Temporary map data were used for each field investigation, while permanent map data were forest compartment-sub compartment maps, contour map, and forest road map. Temporary map data were inputted or outputted from GPS (eTrex Vista and 76S, Garmin Inc.) to a personal computer, using the free software Kashimir3D. The permanent map data were digitized on GIS (Geographic Information System), converted and incorporated into the GPS. The GPS incorporated with forest maps was tested in the Yanase National Forest area, in the eastern part of Kochi prefecture. The 95% GPS horizontal precision of 76S and eTrex were 96m and 103m on road, and 33m and 37m in natural forest stands. Since positions surveyed with the GPS and forest maps were displayed on the GPS, it was easier to recognize one's position in the forest. Since only the GPS was carried out in the field, the navigation system was more portable and waterproof than the navigation systems with portable computer or PDA (Personal Digital Assistant). When forest maps were provided on GIS, the cost to introduce the system depended on GPS and converting maps, so that the introductory cost was most inexpensive. I supposed that forest office would introduce the forest navigation system easily because of inexpensive cost.
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Chikage Todo, Shigeru Torigoe
Article type: Article
2006 Volume 15 Issue 2 Pages
109-111
Published: September 30, 2006
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
116-117
Published: September 30, 2006
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
118-119
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Article type: Appendix
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Article type: Cover
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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Article type: Cover
2006 Volume 15 Issue 2 Pages
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Published: September 30, 2006
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