Eco-city planning is a key element of urban land use planning in perspective and of ongoing debate of environmental urban sustainable development with a spatial and practical dimension. The conceptual basis of ecological planning is that we can no longer afford to be merely human-centred in approach. Instead, the interdependency of human and non-human species has forced us to appreciate the rights and intrinsic values of non-human species in our pursuit for a sustainable ecosystem. This volume has as approach an emphasis on environmental planning policies whereby, for example, energy saving, anti-pollution measures, use of non-car modes, construction of green buildings, safeguarding of nature and natural habitats in urban areas, and use of more renewable resources are promotional norms. Their aims and leading outcome serve to protect the Earth from adverse effects of global warming and different sources of pollution threatening the quality of life of human societies.