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基于geoportal的流域水环境信息共享关键技术研究与应用

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基于Geoportal的流域水环境信息共享关键技术研究与应用

作者：李鲁奇首都师范大学

学位级别：硕士

近年来,随着社会经济的发展和人类活动的增加,我国污染事件的发生越来越频繁,特别是流域水环境的污染,备受人们关注,同时也引起了国家有关部门的高度重视。控制与治理流域水环境污染对社会经济的发展和人类生命安全是至关重要的,如何科... 详细信息

近年来,随着社会经济的发展和人类活动的增加,我国污染事件的发生越来越频繁,特别是流域水环境的污染,备受人们关注,同时也引起了国家有关部门的高度重视。控制与治理流域水环境污染对社会经济的发展和人类生命安全是至关重要的,如何科学合理的利用流域水环境信息资源来进行流域水环境风险评估与监控预警是极其重要的,同时又可以为国家环保部门控制和治理流域水污染提供快速准确的决策依据。作为流域水环境风险评估和监控预警的基础,流域水环境信息共享平台为分布在不同区域、不同部门的应用系统提供数据支撑,根据对流域水环境数据的特点、分布现状和共享需求的分析,本文提出了基于geoportal的流域水环境信息共享模式,并采用SOA架构思想,以ArcGIS Server为平台,以geoportal扩展组件为基础进行分层设计和开发,同时对元数据技术、目录服务技术以及geoportal对信息资源的整合技术三个关键技术进行了深入的研究,为geoportal支持下的流域水环境信息共享平台的构建提供了技术支撑。本文的主要研究内容及成果如下：（1）从流域水环境信息共享的研究现状入手,在对流域水环境数据的特点、分布现状及共享需求等研究背景进行分析后,提出了基于geoportal的流域水环境信息共享模式;（2）对元数据技术进行了详细阐述,定义了“模块-元数据实体-元数据元素”构建模式,以环境信息核心元数据标准为基础,研究了元数据的扩展原则和扩展方法,并对流域水环境信息元数据进行分类,根据实际应用建立了元数据库;（3）深入研究了目录服务技术,介绍了LDAP相关知识并采用LDAP目录服务来存储异构数据源的元数据,并根据实际应用需要,分别对目录服务中的目录模型、目录视图、目录数据以及目录模式进行了设计,最后用构成的目录信息库来存储数据库元数据;（4）研究geoportal对流域水环境信息资源的整合技术,通过geoportalAPI、模块组件及其所支持的标准分别从界面、功能和数据三个层次上研究了信息资源整合技术,从而解决信息资源模块耦合性低,业务松散的状况;（5）基于SOA架构思想和分层设计模型,论文提出了流域水环境信息共享平台的总体设计方案,包括总体框架结构设计和功能设计,并设计了实际的开发技术路线,对流域水环境信息共享平台的部分功能模块进行了展示。

关键词：流域水信息共享 geoportal 关键技术

基于geoportal的流域水环境信息共享平台设计与实现

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环境工程技术学报 2012年第5期2卷 390-395页

作者：马红旺高振记方利陈运帷韩兴刚湖南科技大学建筑与城乡规划学院湖南湘潭411201 中国环境科学研究院环境信息研究所北京100012 ESRI中国(北京)有限公司北京100027

针对水环境信息的多源、异构、分布式和时效性等特征,研究了基于geoportal的流域水环境信息共享平台构建技术,同时结合当前水环境管理部门信息存储、管理、使用的现状和面向服务架构(SOA)的设计思想,构建分布式的信息共享平台,实现空间... 详细信息

针对水环境信息的多源、异构、分布式和时效性等特征,研究了基于geoportal的流域水环境信息共享平台构建技术,同时结合当前水环境管理部门信息存储、管理、使用的现状和面向服务架构(SOA)的设计思想,构建分布式的信息共享平台,实现空间数据、属性数据以及多格式数据的有效集成共享,提供水环境信息的注册、发布、下载和实时收割等功能,并可为流域水环境风险评估与预警提供实时、准确、可靠的数据服务。

关键词：水环境信息 geoportal 共享

Bridging open source tools and geoportals for interactive spatial data analytics

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Geo-Spatial Information Science 2019年第3期22卷 185-192页

作者： Bing She Tao Hu Xinyan Zhu Shuming Bao University of Michigan Ann ArborMIUSA Center for Geographical Analysis Harvard UniversityCambridgeMAUSA Geocomputation Center for Social Sciences Wuhan UniversityWuhanChina State Key Lab of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina Collaborative Innovation Center of Geospatial Technology WuhanChina China Data Institute Ann ArborMIUSA

geoportals have been the primary source of spatial information to researchers in diverse *** years have seen a growing trend to integrate spatial analysis and geovisual analytics inside *** could use the geoportal to conduct basic analysis without offline *** practice,domain-specific analysis often requires researchers to integrate heterogeneous data sources,leverage new statistical models,or build their own customized *** tasks are increasingly being tackled with open source tools in programming languages such as Python or ***,it is unrealistic to incorporate the numerous open source tools in a geoportal platform for data processing and *** work provides an exploratory effort to bridge geoportals and open source tools through Python *** geoportal demonstrated in this work is the Urban and Regional Explorer for China studies.A python package is provided to manipulate this platform in the local programming *** server side of the geoportal implements a set of service endpoints that allows the package to upload,transform,and process user data and seamlessly integrate them into the existing datasets.A case study is provided that illustrated the use of this package to conduct integrated analyses of search engine data and baseline census *** work attempts a new direction in geoportal development,which could further promote the transformation of geoportals into online analytical workbenches.

关键词： geoportal open source Python web GIS spatial analysis

Adopting cloud computing to optimize spatial web portals for better performance to support Digital Earth and other global geospatial initiatives

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International Journal of Digital Earth 2015年第6期8卷 451-475页

作者： Jizhe Xia Chaowei Yang Kai Liu Zhipeng Gui Zhenlong Li Qunying Huang Rui Li Department of Geography and GeoInformation Science NSF Spatiotemporal Innovation CenterGeorge Mason UniversityFairfaxVAUSA School of Remote Sensing and Information Engineering Wuhan UniversityWuhanHubeiP.R.China LIESMARS Wuhan UniversityWuhanHubeiP.R.China

A spatial web portal(SWP)provides a web-based gateway to discover,access,manage,and integrate worldwide geospatial resources through the Internet and has the access characteristics of regional to global interest and *** various technologies have been adopted to improve SWP performance,enabling high-speed resource access for global users to better support Digital Earth remains challenging because of the computing and communication intensities in the SWP operation and the dynamic distribution of end *** paper proposes a cloud-enabled framework for high-speed SWP access by leveraging elastic resource pooling,dynamic workload balancing,and global *** results demonstrate that the new SWP framework outperforms the traditional computing infrastructure and better supports users of a global system such as Digital *** methodologies and framework can be adopted to support operational geospatial systems,such as monitoring national geographic state and spanning across regional and global geographic extent.

关键词： CyberGIS/WebGIS geoportal spatial cloud computing spatiotemporal thinking and computing GEO national geographic state

A Sensor Web for Real-Time Groundwater Data Monitoring in Morocco

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Journal of Geographic Information System 2014年第6期6卷 613-623页

作者： Aniss Moumen Hassane Jarar Oulidi Meryem Agadi Mohamed Nehmadou Mohamed Ben-Daoud Amel Barich Abdelaziz Mridekh Bouabid El Mansouri Said Boutaleb Karim Ben Hachmi Mohammed Ali Essahlaoui Samir Eljaafari Geosciences Laboratory of Natural Resources (GeoNaRes) Faculty of Sciences IbnTofial University Kenitra Morocco Department of Mathematics Informatics and Geomatics Hassania School of Public Works (EHTP) Casablanca Morocco Laboratory of Chemical Engineering and Environment Faculty of Science and Technology Hassan II University Mohammedia Morocco Applied Geology and Geo-Environment Laboratory Faculty of Sciences Ibn Zuhr University Agadir Morocco Department of Biology Faculty of Science Moulay Ismail University Meknes Morocco Instituto Andaluz de Ciencias de la Tierra UGR-CSIC Granada Spain Water Sciences and Environmental Engineering Group Department of Geology Faculty of Science Moulay Ismail University Meknes Morocco

This article presents research and development of an interoperable platform to facilitate, monitor and coordinate groundwater data sharing. This system was orchestrated by a number of services described by Open Geospatial Consortium (OGC) such as Sensor Observation Service (SOS) and other services for the use of mapping data, Web Feature Services (WFS), Web Map Service (WMS), and catalogue services (CSW). An important activity for our project was the establishment of a portal for geographic data and services. geoportal developed for this project will promote and facilitate access to groundwater data and share theme more openly. Otherwise our system has been designed to provide a powerful tool that enhances the ability of regional staff to monitor near real-time groundwater data (i.e.?piezometric level) and as a result will help provide a more effective response to environmental upsets.

关键词： Sensor Web OGC geoportal Geocatalog Monitoring Groundwater Morocco

Towards a Spatial Data Infrastructure and an Integrated Management of Groundwater Resources

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Journal of Geographic Information System 2015年第6期7卷 667-676页

作者： Hassane Jarar Oulidi Aniss Moumen Hassania School for Public Works Route d’El Jadida Casablanca Morocco Geosciences Laboratory of Natural Resources (GeoNaRes) Faculty of Sciences IbnTofial University Kenitra Morocco

International studies of expertise have shown that the difficulty of data access is one of the major hindrances that brakes any effort to conduct studies on groundwater. This research paper is an attempt to address this problematic through developing a technical framework to implement a Spatial Data Infrastructure (SDI) with a view to improving the status of access to data related to groundwater in Morocco, and achieving their interoperability. This prototype is primarily based on international standards (OGC & ISO) such as Web Map Service (WMS), Web Feature Service (WFS), Catalog Web Service (CSW) and Sensor Observation Service (SOS) accompanied by the use of associated specifications such as Geography Markup Language (GML) and Filter Encoding (FE). This platform is considered both as a tool for sharing updated data collected from numerous and divers source providers, and as a tool of web-based GIS for groundwater management, which constitutes the basis for decision making.

关键词： Spatial Data Infrastructure Groundwater Resources OGC Standards geoportal Morocco

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