Reconsideration of Conservation Management in the Minuma-tanbo Public Land Promotion Project from the Viewpoint of the Relationship between Land Utilization and Soil Composition

Abstract

In this paper, land management appropriate to the advantage of the land is considered by focusing on the relationship between the land utilization and the soil composition of scattered public lands, using the "Minuma-tanbo Public Land Promotion Project" as a case. The soil is andosol, in which phosphate tends to be depleted, and there is much humus with a great amount of plant remains buried underground. A possibility was suggested that in the "Minuma-tambo Welfare Farm" which reduces compost to soil, a soil system with sufficient phosphate and potassium has been constituted. There are many citizens' activities which have as their objective, rather than profitability, the gaining of a feeling of accomplishment by putting in a lot of work, and it is considered that such farming methods put to good use the advantage of the land of Minumata-tambo as well as raise the attractiveness of conservation activities.