Landscape Ecological Benefits of Site Greenery
Date Issued
2015
Date
2015
Author(s)
Wang, Huei-Shuang
Abstract
Under the effect of urbanization, city population and buildings are continually expending, causing threats to original habitats such as fragmentization and shrinkage. According to the “Greenery on building and vacant space policy” of Taipei City Government, the green coverage ratio for the second type public building and schools should be increased to 55% at least. Urban architecture greenery is a common green infrastructure that can be employed to mitigate this issue. Site greenery can recreate biological habitats for birds, insects, plants, etc., help maintaining an environment suitable for these species to survive and breed, and contribute to biodiversity and environmental health. Landscape structure has a significant effect on bird habitation. According to the investigation of environmental conservation groups in Taiwan, riverside parks or city parks are mostly habitated by local and migratory birds, while urban areas that are full of high-density buildings exhibit significantly weaker bird diversity. Past research have suggested that architecture greenery could solve the problem by increasing green coverage ratio, lowering building temperature and providing ecological benefits. In this study, we made a city-landscape-to-bird-diversity model from 46 sites in Taipei City, and chose 7 sites containing public buildings for future greenery simulation. The result shows that the factors which influenced bird diversity are tree patch numbers, connectivity of green and bare soil patches, and the mean shape index of water patches. Future urban greenery plan could involve preservation of large water and vegetation areas as well as planting more vegetables, shrubs or arbors. For existing bird species, proper policy should be made to deter rapid changes in land use.
Subjects
urbanization
green roof
bird amount
landscape digitalization
ecological benefits
Type
thesis