2015 年 20 巻 2 号 p. 93-102
The change of environment-conscious construction methods in land consolidation projects was investigated on the case of Ishikawa, Japan. The results showed that (1) the installation of environment-conscious facilities in Ishikawa began just after the notice of land improvement projects by the Japanese government in 1991, (2) the rate of land consolidation projects which included environment-conscious facilities reached 80% already when the revised Land Improvement Act was enforced, and has become 100% recently, (3) in each project the number of the kinds of environment-conscious construction methods and targeted conservation species has been increasing, (4) recent land consolidation projects had a tendency to select oriental weather loach and frogs for targeted conservation species, and (5) overusing of concrete products for environment-conscious facilities has become prominent. It was inferred that the recent trend of overusing concrete products has been caused by the regard to the local residents forced to the burden of the maintenance of the facilities, and besides by the prefectural government policy that concentrates to the conservation of particular species. We considered that it is necessary to change the consciousness of local residents against coexisting plants and animals, in cooperation with an environmental education, to achieve more effective facilities for conservation of biodiversity.
