基于Flex和ArcGIS Server的珠三角红树林信息管理系统研究

发布时间：2018-10-30 07:01

【摘要】：本文基于ArcGIS Server和Flex技术,利用土地利用动态变化、景观格局指数和生态风险方法,实现了WebGIS版红树林信息管理系统。它与传统WebGIS程序相比,具有美观的界面、易开发性、强交互性、良好的用户体验等特点,并且能充分利用计算机、服务器和网络等系统资源,实现资源最佳配置。本文首先论述了珠三角红树林信息管理系统研究的背景与意义,阐明互联网和信息化时代珠三角红树林专题管理信息系统建设的需要；然后对GIS在红树林研究中的应用、WebGIS发展历程与研究现状、ArcGIS Server和Flex在WebGIS中应用现状进行综述,介绍了研究区、本文研究目的、内容、方法及技术路线；接着结合本次开发具体操作对系统开发平台(RIA与Flex技术、ArcGIS Server平台、ArsSDE与SQL Server空间数据库)和系统开发关键技术(客户端组件开发、服务器Java EE架构、Tomcat服务器、地理处理服务)进行了介绍和分析；其次,重点论述了珠三角红树林信息管理系统中评价与分析功能的理论方法,其中包括土地利用动态变化分析、景观格局分析和湿地生态风险评价理论与方法；最后构建了珠三角红树林信息管理系统,从需求分析、总体设计、数据处理与数据库设计到功能模块演示都进行了详细分析和演示。本文主要研究结论如下：(1)本文展示了珠三角红树林信息管理系统的主要设计理念、过程与功能实现,基于ArcGIS二次开发实现了地图基本操作、图层管理、要素查询、搜索定位、标记绘图、面积长度量算等功能,并实现了土地利用动态变化分析、景观格局分析和湿地生态风险评价功能,系统界面美观、交互性强、运行流畅。(2)土地利用动态变化分析模块中引入的土地利用结构信息熵反映了红树林湿地土地利用景观总体有序度、均匀度和优势度方面的变化,土地利用动态度衡量了研究时段每种地类的活跃程度,而这种变化的原因和活跃度的具体方向、大小,则利用了土地利用转移矩阵来进行定量分析。土地利用结构、土地利用信息熵、土地利用动态度和土地利用转移矩阵分析方法互相关联、层层递进有利于分析、呈现红树林湿地土地利用信息变化。(3)景观格局分析模块中使用景观格局指数方法,有利于反映大小、形状、属性不一的景观斑块类型和数目,以及在空间上的分布与组合规律,也可以一定程度反映具体的生态过程和生态意义。(4)生态风险分析模块中按照格网采样,使用多种景观格局指数计算各个采样格网生态风险,采用克里金模型进行空间最优插值,最后进行地理处理服务结果发布,该方法有效的在浏览器/服务器模式中分析了红树林湿地生态风险。(5)构建了基于ArcGIS Server和Flex的WebGIS的通用设计框架,并分别从客户端、服务器端和数据库端阐述了该通用框架系统的具体实现,且这个框架可以应用到其他领域。
[Abstract]:Based on ArcGIS Server and Flex technology, the mangrove information management system of WebGIS version is realized by using land use dynamic change, landscape pattern index and ecological risk method. Compared with the traditional WebGIS program, it has the characteristics of beautiful interface, easy development, strong interaction and good user experience. It can make full use of the system resources such as computer, server and network, and realize the best allocation of resources. This paper first discusses the background and significance of the research on mangrove information management system in the Pearl River Delta, and expounds the needs of the construction of the mangrove management information system of the Pearl River Delta in the era of Internet and information technology. Then it summarizes the application of GIS in mangrove research, the development of WebGIS and the present situation of, ArcGIS Server and Flex in WebGIS, and introduces the research area, purpose, content, method and technical route of this paper. Then the system development platform (RIA and Flex technology, ArcGIS Server platform, ArsSDE and SQL Server spatial database) and system development key technologies (client component development, server Java EE architecture, Tomcat server) and system development platform (RIA and Flex technology, ArcGIS Server platform, ArsSDE and SQL Server spatial database) and system development key technology (client component development, server Java EE architecture, Tomcat server), Geo-processing services) were introduced and analysed; Secondly, the theory and method of evaluation and analysis function in mangrove information management system of Pearl River Delta are discussed, including land use dynamic change analysis, landscape pattern analysis and wetland ecological risk assessment theory and method. Finally, the mangrove information management system of Pearl River Delta is constructed. It is analyzed and demonstrated in detail from requirement analysis, overall design, data processing and database design to function module demonstration. The main conclusions of this paper are as follows: (1) this paper shows the main design concept, process and function realization of mangrove information management system in the Pearl River Delta. Based on the secondary development of ArcGIS, the basic operation of map, layer management, element query are realized. The functions of searching and locating, marking and drawing, measuring area length and so on are realized. The functions of land use dynamic change analysis, landscape pattern analysis and wetland ecological risk assessment are realized. The interface of the system is beautiful and the interaction is strong. (2) the information entropy of land use structure introduced in the land use dynamic change analysis module reflects the changes in the overall order, evenness and dominance of mangrove wetland land use landscape. The dynamic degree of land use measures the active degree of each type of land in the study period, but the reason of this change and the specific direction and magnitude of the activity degree are quantitatively analyzed by using the land use transfer matrix. The structure of land use, the entropy of land use information, the dynamic attitude of land use and the analysis method of land use transfer matrix are related to each other. (3) the landscape pattern index method is used in landscape pattern analysis module, which is helpful to reflect the type and number of landscape patches with different size, shape and attribute. The distribution and combination law in space can also reflect the specific ecological process and ecological significance to some extent. (4) sampling according to grid in ecological risk analysis module. Using a variety of landscape pattern indices to calculate the ecological risk of each sampling grid, using Kriging model to carry out spatial optimal interpolation, and finally to publish the results of geographic processing services. This method effectively analyzes the ecological risk of mangrove wetland in browser / server mode. (5) the general design framework of WebGIS based on ArcGIS Server and Flex is constructed, and the client side, respectively, is used to analyze the ecological risk of mangrove wetland. The implementation of the general framework system is described on the server and database side, and this framework can be applied to other fields.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S712;TP311.52

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