多尺度农业面源污染可视化系统的设计与实现

Design and application of multi-scale agricultural non-point source pollution visualization system

关键词:  多网格  农业面源污染  可视化系统  WebGIS

Key words:  multi grid  agricultural non-point source pollution  visualization system  WebGIS

摘要:

【目的 】 农业绿色发展已取得一定进展，但是我国农业面源污染和生态退化的趋势还尚未得到有效遏制。农业面源污染的一系列复杂特性，使得对其的治理难度较大，很难有效地对其防范治理和预警预测，同时非专业人员和普通大众很难根据有效途径对其进行深入了解。文章以网格化管理的思维，将农业面源污染相关环境信息进行可视化展示，为解决当前农业面源污染问题提供参考。 【方法 】 该文以重庆市、涪陵区、睦和村、南沱镇4个网格尺度为例，利用GIS技术、Vue.js、Leaflet.js和数据库等技术，构建重庆市多网格尺度农业面源污染风险评估可视化系统。系统主要有两大模块：风险评估可视化模块和地图操作模块，其中风险评估可视化模块又划分为4个不同网格尺度。 【结果 】 展示了由区县级的宏观到地块级的微观这4个网格尺度的农业面源污染环境情形，实现了用网格化管理的思维对农业面源污染的管理和决策提供参考。 【结论 】 研究有助于提高农业面源污染的可视化工作和管理水平，也提供了一个为非专业人员和普通大众深入了解农业面源污染的实现方案和传播途径。

Abstract:

［ Purpose ］ Since the 18th National Congress of the CPC，agricultural green development has achieved a good start，but the trend of agricultural non-point source pollution and ecological degradation has not been effectively curbed. A series of complex characteristics of agricultural non-point source pollution make it difficult to control it，and it is difficult to effectively prevent and control and early warning prediction. At the same time，it is difficult for non-professionals and the general public to deeply understand it according to the effective way. With the idea of grid management and visualization，the article presents the environmental information of agricultural non-point source pollution to users in the form of straightforward and concise images，which provides assistance and reference for solving the current problems of agricultural non-point source pollution. ［Method ］ Taking four grid scales of Chongqing，Fuling District，Muhe village and NANTUO town as examples，the article uses GIS technology，vue.js，leaflet.js and database technology to build a multi grid scale visualization system of agricultural non-point source pollution risk assessment in Chongqing. There are two modules in the system：risk assessment visualization module and map operation module. The risk assessment visualization module is divided into four different grid scales. ［Result ］ The four grid scales of agricultural non-point source pollution environment，from the macro scale of district and county level to the micro scale of plot level，were displayed，and the grid management thought was used to provide assistance and reference for the management and decision-making of agricultural non-point source pollution. ［Conclusion ］ The study will help to improve the visualization and management level of agricultural non-point source pollution，and also provide a realization scheme and communication channel for non professionals and the general public to deeply understand agricultural non-point source pollution.