Nozaki and Higano (1998) brought out that multi-objective optimization model is effective for the control of development and natural environmental conservation accompanied by the Ogasawara airport construction project. We use many assumptions for natural environment in our model, but we believe that the result of multi-objective optimization model is reliable. Because we calculated a few cases that differ in value of land use and living conditions of animal, but each result correspond well. I, however, have to recognize that the calculation in relation to natural environment was ideally. I try to improve the calculation of extinction risk in our model. I fix on subspecies of Japanese wood pigeon ( Columba janthina niters ) as the object. This bird is endemic species in Ogasawra islands and is classified into endangered species. The predetermined areas of alternatives of Ogasawara airport construction project contain their habitat. The calculation of extinction risk has newly absorbed features of metapopulation.