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Effects of Forestry Activities on Streamwater Chemistry of a Small Mountainous Sub- Watershed at Serikawa River Basin on Shikoku Island,Japan
flow-adjusted concentration nonparametric statistics partial logging reforestation streamwater chemistry
2009/9/9
Two small mountainous sub-watersheds, located at Serikawa river basin on Shikoku Island of Japan were studied for streamwater chemistry. The objective of this study was to determine the impacts of ref...
Tree Densities and Prediction Models for Plantations and Reforestation-abandoned Sites after Clear Cutting in Kyushu Island,Japan
mixed coniferous-broadleaved forests pioneer tree species prediction models quantification method I species dominating the canopy layer
2009/8/28
We analyzed the species and densities of established tree with height≥1.3m in 59 conifer plantations and 41 reforestation-abandoned sites after clear cutting (i.e. clear-cut sites) on Kyushu Island. N...
Regeneration of Fagus crenata Experimentally Managed by a Shelterwood System 33 or 54 Years after Cutting in Forests with Deciduous Shrub-type Undergrowth in the Tohoku District,Northern Honshu,Japan
Fagus crenata forest floor treatment Kurosawajiri Research Site natural regeneration shelterwood system
2009/8/28
Regeneration of Fagus crenata was examined in the experimental forests managed by a shelterwood system at the Kurosawajiri Research Site, Iwate Prefecture. In a stand where clearing of the forest floo...
Relationship between Dwarf-bamboo Growth and Small Rodents on Mt. Ohdaigahara,Central Japan,with Special Reference to Construction of Deer-proof Fences
deer-proof fence dwarf-bamboo Mt.Ohdaigahara sika deer small rodent
2009/8/28
We examined the relationship between dwarf-bamboo growth and small rodents on Mt. Ohdaigahara where the population density of sika deer (Cervus nippon) has been increasing and trunk debarking by the d...
Construction of a Volume Table for Evergreen Broad-leaved Trees with Pipe Model Theory and Relative Stem Curve: A Case Study in the Tokyo University Forest in Chiba,Japan
branch broad-leaved tree pipe model relative stem curve volume table
2009/8/28
In this paper we constructed a volume table for broad-leaved trees including a stem and branches using a relative stem curve, provided that the trees are subject to the pipe model theory. First we mea...
Structure and Growth in an Old-growth Sugi (Cryptomeria japonica) Forest in Akita Prefecture,Northeastern Japan
old-aged forest old-growth sugi forest periodic annual net increment stand structure thinning operation
2009/8/27
Periodic annual net increment of stand volume and stand structure dynamics were analyzed by using data collected in long-term monitoring during a 77-year period in a sugi (Cryptomeria japonica) natura...
Relationship between Stem Density and Interception Ratio for Coniferous Plantation Forests in Japan
conifer evapotranspiration forest management interception evaporation plantation stem density
2009/8/27
Summarizing 12 studies examining interception evaporation from coniferous plantation forests in Japan, we found a positive correlation between stem density and interception ratio. Regressing the corre...
Relationships between the Distribution and Site Conditions of Abies sachalinensis Seedlings, Saplings and Juveniles in Selection Cutting Stands of Natural Forests in Central Hokkaido,Japan
Abies sachalinensis, distribution characteristics, natural regeneration, selection cutting stand, site conditions
2009/8/24
We examined how site conditions in selection cutting stands of natural forests relate to the regenerate distribution of Abies sachalinensis, which is a main species of mixed conifer-broadleaved forest...
Age-related Changes in Stand Volume Growth of Cryptomeria japonica Plantations in Akita District,Northeastern Japan
mean annual net increment mean annual gross increment old-aged plantation of Cryptomeria japonica site productivity stand form factor
2009/8/24
We analyzed long-term monitoring data on old-aged plantations of sugi (Cryptomeria japonica) in Akita District to examine age-related changes in stand volume growth. Mean annual net volume increment i...
Factors Affecting the Success of Cryptomeria japonica Plantations and Regeneration of Hardwoods in Plantations in a Snowy Region of Northern Japan
dwarf bamboo mixed-forest snow depth unsuccessful plantations zoning
2009/8/21
We evaluated the relationships of some environmental factors to the success of Cryptomeria japonica afforestation and the degree of regeneration of hardwoods in C. japonica plantations in three waters...
Changes in Stand Structure after the Mass Mortality of Oak Trees in Keihoku Area,Kyoto City,Japan
broad-leaved secondary forest mass mortality of oak trees Qurcus crispula regeneration succession
2009/8/21
The effect of mass mortality of oak trees, caused by the fungus Raffaelea quercivora, on the stand structure of a broadleaved secondary forest was investigated in a stand located in northern Kyoto Cit...