Comparison of the effect of natural and social environment on land-use selection between artificial and natural-forest:a case study in Miyazaki Prefecture

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Both the natural and social environments affect land-use patterns. We analyzed their effects on current landscape structure in forest area in Miyazaki Prefecture, southern Japan. First, we calculated Jacob's electivity index for artificial forest and natural forest using elevation and slope in four selected regions, namely Miyazaki City, Kobayashi City, Aya Town and Shiiba Village. The electivity for artificial forest was higher in lower elevation and gentle slope classes and was lower in higher elevation and steep slope class than that for natural forest. The patterns of electivity for artificial forest and natural forest were different among selected four regions. Second, we constructed a generalized linear model to explain land-use change to artificial forest within forest area using elevation and slope as independent variables. The importance of independent variables in explaining land-use change to artificial forest varied between 4 regions. In Miyazaki City and Aya Town, the effect of slope on land-use change to artificial forest was stronger than that of elevation, while in Kobayashi City and Shiiba Village vice versa. These suggested that the influence of natural environment on land-use pattern would differ under the different social environment.
日本景観生態学会の論文