关键词: 科学绿化, 地理场景, 动态符号, 符号设计, 多尺度表达

Abstract: As an indispensable key element in the high-quality development of urban construction, the new surveying and mapping technology has been adopted for scientific greening. It provides an all-round technical guarantee for national land greening actions. Based on the human cognitive law of spatial graphics and the spatial representation ability of the map, the utilization of map symbols to visualize the key elements of scientific greening can improve the public's overall knowledge of urban greening and make the concept of scientific greening deeply rooted in people's hearts. Little attention has been paid to scientific greening by map symbols. The traditional design is mostly based on simulation, which is difficult to convey thematic characteristics. Under the new concept of “geographical scene” in cartography, the multi-scale scientific greening dynamic scene by the dynamic map symbol design method is constructed in this study. According to the scene characteristics of provincial large-scale,regional medium-scale and plot level small-scale, it integrates multiple symbol design parameters and emphatically highlights the scientific greening attention indicators for each scale based on dynamic characteristics. In addition, a continuous multi-scale scene for switching adaptively for a better reading experience is designed. This is based on the inversely proportional relationship between information details and viewpoint observation distance. In general, the proposed approach may provide support for the representation of scientific greening scenes and assists in the decision-making of greening management departments.

Key words: scientific greening, geographic scenes, dynamic symbol, symbol design, multi-scale representation