FOO W 城市与其周围环境的联系 e出; There is a constant renewal of material and energy in the landscape, in natural cycles and in one-way transformations and movement. Settlements and land use have to some extent been adapted to meet nature s conditions. But the increasing density of settlements, technological progress and changes in our life style greatly affect these processes, resulting in various environmental problems.城市与其周围环境的联系