3S技术在城市林业中的应用

城市林业可以概括为规划、建设和管理城市生态系统中树木和森林的事业。3S技术（RS，GIS，GPS）凭借实时、高效、低劳力、智能化的特点，在城市林业中的应用日益普遍。文中从国内外城市森林资源调查、景观格局规划、健康状况动态监测、生态价值评估4个方面对3S技术在城市林业中的应用现状进行了总结。分析认为，3S技术在城市林业建设的各个方面逐渐发挥着越来越重要的作用，但在国内存在着数据收集成本高及来源少、成果共享不足、公众服务信息网络不健全等问题，使其在城市林业中的高效应用较国外有一定差距。

Application of 3S Technology in Urban Forestry

Urban forestry can be defined as the planning, management and utilization of forests and trees in urban ecosystems. The 3S (RS, GIS and GPS) technology, which is real-time, efficient, labor-saving and intelligent, has now been widely used in urban forestry. The paper reviewed the application of 3S technology to urban forestry in terms of urban forest resource investigation, landscape pattern planning, health condition monitoring and ecological benefit evaluation. The 3S technology is by and large playing an irreplaceable role in urban forest growth. In China, however, the problems, such as high cost and less sources of remote sensing data collection, insufficient results sharing paths, lack of sound networks for public participation, etc., have restrained its application in urban forestry.