城市自然保护已成为城市生态建设的重要内容。城市自然保护有赖于相关数据采集、评价方法的建立和规划途径的支持。本文结合西安市典型区域,运用RS和G IS技术,探讨了城市生境制图的一般方法与程序,主要工作包括以下方面的:城市生境分类体系的建立;城市生境制图及数据库的建立;城市生境保护价值评价;城市生境链的规划。主要结论:①城市生境制图是一种多学科结合的综合性研究,为城市生态建设提供了新的数据源;②通过生境单元综合评价,有价值的生境单元及空间格局可被识别出来;③基于生境制图及评价的生境链规划为城市自然保护提供了一条极富操作性的途径。
Urban nature conservation has come to be one focus of urban ecological construction. This work should rely on the advent of the approaches of the relevant data gathering, evaluation and planning. A typical study area is chosen on the border in the south of Xi' an City of China, and with RS and GIS, general ways and procedures of urban biotope mapping are studied in this paper. The work includes the following main aspects : the building of the urban biotope category system, the building of the urban biotope data base of study area, the evaluation of the biotopes relating to the value of nature conservation in urban area, and the planning of the urban biotope chain. The result shows that: 1 ) the urban biotope mapping is an inter-discipline and comprehensive work in urban area, which provides a new data source for the biotope spatial patterns can be identified in the muhi-pu urban ecological construction and researches; 2) some rposed evaluation process, which provides the conservation potential in urban area; 3) the biotope chain planning provides a very practical and meaningful approach to urban nature conservation.