中文摘要：

城市中的传统民族街区是城市人文生态多样性的重要组成部分，是弥足珍贵的城市历史文化的载体，但近几十年的城市更新，特别是城市道路的新建与改拓，引发和加深了传统民族街区的演变，街区生存面临重大挑战。本文以南京七家湾传统回民街区为例，研究其历史变迁过程，街道景观演变的规律，用人文生态的理论研究道路对街区景观演变的影响，以期在道路规划中考虑对城市传统民族街区的影响，制定更适宜城市人文生态多样性的规划。

英文摘要：

Ethnic districts are important elements of urban cultural eco-diversity, a platform for urban history. During the last decades urban regeneration, especial y the new roads development, traditional ethnic districts are now facing serious changes and chal enges. The paper takes the muslim Qijiawan District in Nanjing as example to study the historic evolution, the street changes, the influence of the road system to the traditional urban view. The purpose is to find out a suitable way in the future for urban cultural eco-diversity protection.