(Bulletin of FFPRI), Vol.6, No.2 (No.403), 127-134, June. 2007 1) * The necessity for the research on the relationship between transition of forest floor vegetation accompanying thinning and function of soil and water conservation in artificial sugi(cryptomeria japonica) forest. OOHARA Hideki 1) * Abstract Presently, on the one hand the interest in public benefit such as soil and water conservation brought by forest is swelling, on the other the unsoundness of forest poses a social problem with rapid increase of the belated thinning forest. However, generally it is fact that the importance of a sound forest is not fully understood, also the consensus for promoting thinning is not obtained. In order to cope with this problem, it was necessary to verify the function of soil and water conservation being caused by thinning. Hereupon, I explained that the social background of the belated thinning forest being increase rapidly, and I tried to attach contemporary meaning to thinning management from the view of vegetation control. And I inspected the advancing situation of research and future directivity on this field, while I estimated the quantity of the report. As a result, although sugi (Cryptomeria japonica) artificial forest covers the Japanese land most widely, there are too few reports of this field. For that reason, it is conjectured that the research about the relation between soil and water conservation and thinning of sugi forest, floor vegetation will be needed most. Key words : thinning, soil and water conservation, vegetation, sugi (Cryptomeria japonica), artificial forest, belated thinninge,2005 64 4,1998 18 12 10 Received Dec. 10, 2006 19 1 25 Accepted Jan. 25, 2007 * 020 0123 92 25 Tohoku Research Center, Forestry and Forest Products Research Institute 92 25 Nabeyashiki, Shimo-Kuriyagawa Morioka, Iwate 020 0123 Japan ; e-mail: ooharah@ffpri.affrc.go.jp 1) Tohoku Research Center, Forestry and Forest Products Research Institute(FFPRI)
128 OOHARA H. 2003,2006;,2006 5,1998 15,2005 31 ha 682 ha 10,1996,2005 5 1981 2001,2005;,2002,2006,2006,1972,2006;,2006,,2006,2006 30 ha,2005 1970 2000 1/3,2005 29 22 65 8 7 28,1994;,2005,1995;,1994,1992,2002,2005;,2005,2003; 2002;,2003,2006,2001;,2006;,1993;,2003;,2006;,1999 Fig. 1. A point of view for the promotion of thinning 6 2, 2007
The necessity for the research on the relationship between transition of forest floor vegetation accompanying thinning and function of soil and water conservation in artificial sugi(cryptomeria japonica) forest. 129,2001 Fig. 1,2005,2002 NPO Fig. 1,1954;,1992;,1973;,1987,1964;,1971;,1991 1991 6000 Goldoftas,2006;Göltenboth,Hutter,2002;O Neil,Conde,200 6;Wurfel,2004 19731959 1957 1975 1956 1981 1998 2001 44 25 10,2005 256 ha,2005 12 Miura et al.,2003 1989 4 1978 2005 FOLIS 1 FOLIS 2006 9 4,294 8,255 2,694 12,267 Table 1 15 FOLIS 154 80 500 282 86 64 21 Bulletin of FFPRI, Vol.6, No.2, 2007
130 OOHARA H. Table 1. (FOLIS ) Nomber of literature in relation to thinning, soil and water conservation, vegetation and sugi(cryptomeria japonica) 4,294 8,255 2,694 12,267 154 80 500 282 86 64 21 13 14 8 FOLIS Japanese Forestry Literature Information System 1978 2005 2006 9 FOLIS Table 2. (CAB Abstracts ) Nomber of english literature in relation to thinning, soil and water conservation, vegetation and sugi(cryptomeria japonica) 7,349 92,298 53,751 1,252 191 446 41 7,911 45 58 51 2 10 0 CAB AbstractsOvid web gateway 1978 2005 2006 9 thinning landslide, landslip, water runoff, soil runoff, sediment, source of water, water quality, erosion, flood, water flow, water conservation, land conservation, forest conservation, water holding, soil loss, surface soil, hydrology vegetation sugi, Cryptomeria japonica, Japanese cedar 13 14 4 8 Fig. 2 CAB abstracts 1978 2005 thinning 7349 landslide, landslip, water runoff, soil runoff, sediment, source of water, water quality, erosion, flood, water flow, water conservation, land conservation, forest conservation, water holding, soil loss, surface soil, hydrology 92298 vegetation 53,751 sugi, Cryptomeria japonica, Japanese ceder 1,252 Table 2 191 446 41 7,911 45 58 51 2 10 0 2,1977 1/2,1983;,1983 1/10 Miura et al.,2003 FOLIS 5,333 158 2 2 A0 6 2, 2007
The necessity for the research on the relationship between transition of forest floor vegetation accompanying thinning and function of soil and water conservation in artificial sugi(cryptomeria japonica) forest. 131,1978;,1990;,1989,1985;,1989; 2004;,2004 FOLIS 8 6 4,2001;,2002;,2001; 2002 2001 20 3 40 2002 17 21 1 4 2 1 6,1992 2002 24 1 2001 FOLIS 2003 Fig. 2. The proportion of reports in relation to thinning, soil and water conservation, vegetation and sugi(cryptomeria japonica) Bulletin of FFPRI, Vol.6, No.2, 2007
132 OOHARA H. 2m,1986;,1989,1990,2003; 1989;,2004;,1999 1998 2003 90,,56,17 21. 1977,419,7 11 1985,,79,,80p. 1996 2,33p. 2005,44,26 31 2002,2020,2002 10 21 1973,(, 460p.),3 63. 1986 I,,30,41 52 2006,2006 5 8 Goldoftas,B 2006 When a tree falls in the Philippines, International Herald Tribune, March 7,2006 Göltenboth,F.,Hutter,C.(2002)Model project for sustainable rural development and biodiviersity rehabilitation in South East Asia, Rainforestation Farming,1 7 1978,89,227 230 2003, 19,45 58 1954,, 62P. 1989,26,37 48 2006, 2, 9p. 2006,1p. 2003 1,,566,25-32. 1989 ) A 100,231 234. 1957 3,,95,91 120 1972, 47 46 6 2, 2007
The necessity for the research on the relationship between transition of forest floor vegetation accompanying thinning and function of soil and water conservation in artificial sugi(cryptomeria japonica) forest. 133 1992,,232 239 1999, 37,33 48. 1995,,361p. 1981,,313,175 208 1990,,359 1 122 2006, 8 5(3),1 22. 2005,13p. 2001,,41,8 9 1983,34,61 64. 1973,,51,,72p. 2002,113,184 1959,,54p. 2006,,1p. Miura,S.,Yoshinaga,S.,Yamada,T.(2003) Protective effect of floor cover against soil erosion on steep slopes forested with Chamaecyparis obtusa(hinoki) and other species J.For.Res.,8,27 35. 2005,H17 2005 7 2001 2 3,13p. 2002 2000 13,, 385p. 2006, 17,116p. 1975 1,,,274,23 84 2003,,12,47 52. 2004, 2,3 4 O Neil,J.,Conde,H.(2006) Hundreds feared dead as mud Buries Philippines village, International Herald Tribune, February 17,2006 2005,160p. 1992,,344,105 120. 1993,,345,179 196. 1998,,228p. 2005,,222p. 2006 7p. 1989,,71,276 280 2003,,2003,135 140 1956 1,83,39 64 2001 2000,,204p.,195 203. 2006,1p. 1998,673,11 15. 2003 1989,, No.5,,89 104 1964,,130p. 1971,,216p. 1991,,,,193p.,17 21 2002 1, 265,1 22 2004 Bulletin of FFPRI, Vol.6, No.2, 2007
134 OOHARA H., 36,36 37 2002,,,199p. 2004,,46,22 25 1987,,,348p. 2006, 17 1999 ( ),,47,9 12 1994,,,230p. 2006 2005,,5,17 22. Wurfel,D 2004 Civil Society and Democratization in Philippines,(Growth Governance in Asia, Asia Pacific Center for Security Studies 237p.),215 223 2000,, 535p.,80 105. 2001,,54,79 80 2002,,44,37 41 2006,2006 7 1 1983,,,94,409 410 6 2, 2007