中文摘要：

西北地区城市化发展，在面对自然生态环境的特点和制约条件下，更需要在城市内部建立新的生态过程．而城市绿地建设的目标和质量，是构成城市生态环境的关键．相比较于地域性生态环境贫瘠的特点，西北城市中绿化场地的规划设计与建设过程，反而具有创建更适宜、更多样的生物栖息地的潜力．研究提出生境营造理念，即群落生态系统与场地设计相结合，用适生群落栖息地构成多样化的城市绿地空间，探索制约条件下的改善途径，形成人工干预下的生态过程，提高西北地区城市人居生态环境质量．

英文摘要：

Cities in north-western China, while facing the feature and constraint of natural enviornment condition also the fragileecological system, is more urgent to rebuild new ecological process in inner city area, during urbannization development. And urbangreen space is the important part of evolving in construction of urban ecology system. Comparing with the regional poverty ecologybackground and infertile land, planting site design and constuction of urban green space could develop more adaptable and diversecondition of habitat site. The research puts forward the concept of “Habitat-site construction”, that indicates urban green space siteplanning and design with the diverse bio-community habitat system of multi eco-function. With the chanlenge of improvement andrestricted condition , this research aims to explore the possibile approach to rebuild new ecological process by intervention of humandesigning, construction and maintainnence, consequently to improve the quality of human settlements in north-western cities.