土壤风蚀WebGIS系统设计与实现

发布时间：2018-05-29 21:54

本文选题：WebGIS + 3S技术　；参考：《北京林业大学》2014年硕士论文

【摘要】：土壤风蚀作为全球性的环境灾害,严重影响着各国生态环境安全和社会经济发展,同样在我国干旱和半干旱地区土壤风蚀灾害已成为最为棘手的环境问题之一,急需采取科学有效的防治措施。目前,传统的土壤风蚀监测方法在基础数据的处理与存储、计算与分析上都存在一定的不足,不能够及时有效的为各级部门提供直观可视化的服务。本文针对当前风蚀监测工作所存在的不足,以北京市永定河流域大兴段作为研究区,提出以土壤风蚀模型作为基础理论依据,并结合3S技术、数据库技术、网络技术来构建土壤风蚀WebGIS系统,实现基础监测数据的及时入库管理、分析、显示,实现土壤风蚀的实时监测,为各部门间的协同合作提供平台,为快速定量监测土壤风蚀量和风蚀规律研究提供参考等。具体研究成果如下：通过比对国内外土壤风蚀模型,根据研究区特点选取基础模型,并进行相关因子的修正与添加,构建适用于区域土壤风蚀监测与估算的风蚀模型,并在此基础上,结合关系型数据库和空间数据库技术,在ArcGIS Server for.NET平台下开发出基于B/S模式的分布式风蚀信息系统,实现数据的处理、管理、分析、显示等功能。以研究区2013年3-5月模型因子数据作为基础数据,将模拟结果与同一时期通过测钎法实测得到的结果进行对比验证,最终得出系统运算精度可达80%以上,基本可以满足区域土壤风蚀的监测需求,为土壤风蚀数据的规格化管理与共享服务提供技术支持,为各部门及时有效的了解风蚀活动变化提供平台。
[Abstract]:As a global environmental disaster, soil wind erosion has seriously affected the ecological environment security and social and economic development of various countries, and has also become one of the most difficult environmental problems in arid and semi-arid areas of China. Scientific and effective preventive measures are urgently needed. At present, the traditional methods of soil wind erosion monitoring have some shortcomings in basic data processing, storage, calculation and analysis, and can not provide visual services for all levels of departments in time and effectively. In view of the shortcomings of current wind erosion monitoring work, this paper takes Daxing section of Yongding River Basin in Beijing as the research area, puts forward the soil wind erosion model as the basic theoretical basis, and combines 3s technology and database technology. Network technology is used to construct the soil wind erosion WebGIS system, to realize the timely storage management of the basic monitoring data, to analyze, to display, to realize the real time monitoring of soil wind erosion, and to provide a platform for the cooperative cooperation among the various departments. It provides a reference for rapid and quantitative monitoring of soil wind erosion and wind erosion law. The specific findings of the study are as follows: By comparing the wind erosion models at home and abroad, selecting the basic model according to the characteristics of the study area, and modifying and adding the relevant factors, a wind erosion model suitable for monitoring and estimating the regional soil wind erosion is constructed. A distributed wind erosion information system based on B / S model is developed on the ArcGIS Server for.NET platform with the technology of relational database and spatial database. The functions of data processing, management, analysis, display and so on are realized. Based on the data of model factors in the study area from May to May 2013, the simulation results are compared with those obtained from the measured results of the drilling method in the same period. Finally, the calculation accuracy of the system can reach more than 80%. It can basically meet the monitoring needs of regional soil erosion, provide technical support for the standardized management and sharing services of soil wind erosion data, and provide a platform for all departments to understand the changes of wind erosion activities in a timely and effective manner.
【学位授予单位】：北京林业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S157;P208

【参考文献】