是指居住建筑基地面积与居住建筑用地面积之比。
你会发现多种变化：土地利用，居住密度，建筑物增建，所有权，运输。
You may find different kinds of changes: land use, density of settlement, additions to buildings, ownership, transportation.
由于城市土地长期粗放开发利用，旧城改造建设容积率过高，建筑密度过大，而人们的居住生活水平并未得到根本性的提高。
Because of the extensive mode of land use in a long run, the density and capacity of reconstruction has become too high, while the residents 'living standard has not been essentially improved.
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