都市林・都市公園における鳥類の生活環境の管理、維持の検討

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To observe the species and feeding habits of birds that fly in city forests/parks, we carried out a line-census survey of birds in the Metropolitan Komiyama Park, and evaluated park management and maintenance to produce habitats favorable for birds. The number and species of birds that fly in the park differed among the seasons. The purpose of the use of the park also varied, including rest, wintering, breeding, sleeping, and collection of food. In addition, there were various living patterns such as resident birds, migrating birds, summer birds, and winter birds, feeding habits such as insect feeding, plant feeding, and mixed feeding of both, and feeding styles such as feeding on the tree, during flying, and on the ground. The Metropolitan komiyama Park is located about 2km from an urban district and is a coppice forest park surrounded by highways and residential areas. The number of birds and species that fly in this park were low in summer, high from autumn to spring, and the highest in winter. In addition to resident birds, migrating birds and winter birds used this park for wintering, breeding, sleeping, and food collection. Around the park, there were broad-leaved tree forests in hills and lowlands, coppice forests on lowlands and flatlands, grasslands, thickets of bamboo grass, and fields, which are appropriate as habitats for birds. The plant life in the park had a layer structure form the tree layer to herbaceous layer, and was rich in constituent species. Birds that fly in this park could be classified according to the living sphere into the conventional living sphere type, for which a conventional living sphere for birds is maintained, and the city transfer living sphere type, in which the living sphere is transferred to cities due to city development. The latter routinely flew to the park for feeding. Therefore, to produce environments favorable for birds, consideration should be also given to feeding habits, feeding styles, places safe from predator during rest, and growth of seeds selected by birds. To protect nature and preserve the habitats for birds in this city park, expansion of nature with enrichment of biota is necessary. Adequate attention should be paid to human behavior such as weeding under coppices. Not only human intervention but also adequate use of the power of nature is necessary.
麻布大学の論文

都市林・都市公園における鳥類の生活環境の管理、維持の検討

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