基于HTML5轻量级WebGIS平台的土壤重金属污染可视化评价系统研究

发布时间：2018-01-17 13:02

本文关键词：基于HTML5轻量级WebGIS平台的土壤重金属污染可视化评价系统研究　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：土壤重金属污染作为影响人类粮食安全的重要因素之一,逐渐被国家和研究人员所重视。随着GIS和Web信息技术的不断发展,由传统统计报表形式构成的信息展示方式逐步向WebGIS可视化信息展示的方式发展。利用现代WebGIS强大的空间信息可视化能力,可以为土壤重金属污染评价研究带来快速、高效和便利的信息表达方式。本论文针对目前已有的土壤重金属污染评价监测信息系统的构建展开研究,发现大多数研究由于过去技术的限制,基本停留在PC单机应用阶段且多采用较为重量级的应用框架开发,这种开发方式往往导致应用系统解析效率、执行速度比较慢,展示效果单一且很难对海量数据处理。本论文基于当前土壤重金属污染评价监测信息系统的研究现状,结合当前Web技术和海量数据渲染技术的发展潮流,讨论和探究更加适合当前土壤重金属污染评价信息化发展的WebGIS可视化技术方案。本论文从土壤重金属污染评价监测信息系统的角度结合WebGIS的技术特点讨论了适合当前土壤重金属污染评价监测信息系统的地图引擎技术。同时针对系统所面临的海量土壤重金属数据渲染问题,讨论了当前多种Web海量数据处理方案,寻找出适合土壤重金属污染评价监测信息系统的可行性方案。在土壤重金属污染评价指标的图表可视化和土壤重金属污染源扩散模拟可视化方面,分别讨论并分析了采用Echarts绘制技术和热力图渲染技术的优势。结合以上特点,基于某地区土壤重金属污染调查数据,采用模块化的设计思路,开发了基于热力图的土壤重金属污染时空变化模拟子系统、地图与动态图表的实时一体化联动子系统和动静态资源路由匹配子系统三个核心子系统,同时,采用轻量级架构的方式,整合了空间插值技术、土壤重金属污染评价模型与空间制图等内容,开发出土壤重金属污染评价监测信息系统。实现了对土壤污染信息的快速、高性能可视化展示。极大地提升了土壤重金属污染评价决策的便利性。
[Abstract]:As one of the important factors affecting human food security, soil heavy metal pollution has been paid more and more attention by the country and researchers. With the development of GIS and Web information technology. The information display method which is composed of the traditional statistical report form is gradually developing to the WebGIS visual information display mode. The powerful spatial information visualization ability of the modern WebGIS is utilized. It can bring rapid, efficient and convenient information expression for soil heavy metal pollution assessment. This paper studies on the construction of soil heavy metal pollution assessment monitoring information system. It is found that most of the researches have been limited by the past technology, so they stay in the stage of single PC application and use more heavyweight application framework development. This development method often leads to the efficiency of application system analysis. The speed of execution is relatively slow, the performance is simple and it is difficult to process massive data. This paper based on the current research status of soil heavy metal pollution assessment information system. Combined with the current Web technology and mass data rendering technology development trend. This paper discusses and explores the WebGIS visualization technology scheme which is more suitable for the information development of soil heavy metal pollution assessment. This paper combines WebGIS with the soil heavy metal pollution assessment information system. The technology of map engine which is suitable for the current soil heavy metal pollution assessment information system is discussed. At the same time, the rendering problem of the massive soil heavy metal data is also discussed. This paper discusses a variety of Web magnanimity data processing schemes. To find out the feasible scheme of monitoring information system for soil heavy metal pollution evaluation, in the visualization of the evaluation index of soil heavy metal pollution and the visualization of soil heavy metal pollution source diffusion simulation. The advantages of Echarts rendering technology and thermal map rendering technology are discussed and analyzed respectively. According to the above characteristics, based on the investigation data of heavy metal pollution in a certain area, the modular design idea is adopted. The simulation subsystem of time-space variation of soil heavy metal pollution based on thermal map, the real-time integrated linkage subsystem of map and dynamic chart and the dynamic and static resource routing matching subsystem are developed. At the same time, three core subsystems are developed. The light weight structure was used to integrate spatial interpolation technology, soil heavy metal pollution assessment model and spatial mapping. A soil heavy metal pollution assessment and monitoring information system was developed, which realized the rapid and high performance visualization of soil pollution information, and greatly improved the convenience of soil heavy metal pollution assessment and decision-making.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X825

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