排序方式: 共有96条查询结果,搜索用时 15 毫秒
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潇河是汾河的第二大支流,清代河道变迁频繁.本文利用清代山西地方志中的舆地图和现代空间数据,结合历史文献记载与实地考察,研究了潇河河道变迁最为剧烈的时期--清代近300年间的变迁过程,复原了不同时段的面貌,并对变迁原因进行了分析.认为在气候变干的大背景下,河道变迁的原因主要有两个:一是潇河及其支流泥沙含量大,造成旧河道的... 相似文献
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基于数字城市地理空间框架的GIS应用系统建设 总被引:1,自引:0,他引:1
数字城市地理空间框架集成了基础地理信息数据、专题数据、GIS功能等各类资源,并通过公共服务平台为公共管理和社会公众提供服务。文中对基于数字城市地理空间框架构建GIS应用系统的流程、内容进行分析,说明地理空间框架对GIS应用系统建设的重要意义。 相似文献
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The objective of this study was to investigate the land use/land cover, landforms, shoreline and coastal regulation zone (CRZ) changes of Greater Visakhapatnam coastal region using Indian Remote Sensing-IRS P6 (Resourcesat-I) satellite data and collateral information. Prominent changes have been observed during the past 30 years through land use/land cover analyzes which clearly indicate that thecoastal regulatory zones have altered in respect of both natural and anthropogenic activities. Various geomorphic units were identified and confirmed with appropriate field work. Significant changes have been recognized in the shoreline map, which denote that the area of erosional shoreline is larger than the accretional and stable prone shoreline. The availability of high resolution data has helped to prepare large-scale maps for implementation of CRZ measures. The results were promising and suggest that the modern geo-spatial information and technological tools are extremely helpful for conducting coastal morphological studies. 相似文献
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雷林辉 《测绘与空间地理信息》2013,(8):125-129
数字城市地理空间框架集成了基础地理信息数据、专题数据、GIS功能等各类资源,并通过公共服务平台为公共管理和社会公众提供服务。本文在数字惠州地理空间框架的基础上设计并构建了惠州市公交线路管理系统,说明基于数字城市地理空间框架如何构建GIS应用系统,实现资源的共享应用。 相似文献
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《International Journal of Digital Earth》2013,6(5):417-438
Abstract The HUMBOLDT project has the aim of implementing a Framework for harmonisation of data and services in the geoinformation domain, under the Infrastructure for Spatial Information in Europe (INSPIRE) Directive and in the context of the Global Monitoring for Environment and Security (GMES) Initiative. The two-pronged approach of HUMBOLDT comprises a technical side of software framework development and an application side of scenario testing and validation. Among the HUMBOLDT Application Scenarios designed to demonstrate the capabilities of the Framework there is the one covering Protected Areas themes and use cases. It aims to transform geoinformation, managed by park authorities, into a seamless flow that combines multiple information sources from different governance levels (European, national, regional), and exploits this newly combined information for the purposes of planning, management and tourism promotion. The Scenario constitutes a step further towards the integration of monitoring systems envisaged in the view of Digital Earth. Protected Areas Scenario creates an examples of the use of the HUMBOLDT tools in Desktop and Web GIS environment, together with setting up a server environment exploiting HUMBOLDT harmonisation framework as taking into account user requirements and needs and providing benefits for making the road to ESDI establishment easier. 相似文献
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空间信息系统中的Agent技术 总被引:1,自引:0,他引:1
介绍了空间信息系统和Agent技术,认为把Agent技术运用到空间信息系统中去是未来空间信息产业发 展的潮流。提出了一种基于移动多Agent的空间信息系统框架模型,并进一步剖析了一些关键的应用。最后列举 了一个监控Agent原型系统及其在空间信息系统的数字地图自动综合中的应用实例。 相似文献
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电子政务与数字中国地理空间基础框架 总被引:13,自引:4,他引:9
在对电子政务和数字中国地理空间基础框架的基本概念、内容和体系结构进行深入描述之后,指出电子政务非常需要数字中国地理空间基础框架的支撑,集中体现为:数字中国地理空间基础框架是电子政务的空间定位平台,可以为电子政务提供空间辅助决策支持,并可为电子政务提供清晰易读的可视化工具;与此同时,电子政务为数字中国地理空间基础框架的建设提供了新的应用空间和发展机遇。 相似文献
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基于小波分析的线状特征数据无级表达 总被引:3,自引:0,他引:3
吴凡 《武汉大学学报(信息科学版)》2004,29(6):488-491
利用小波分析提出了线状特征空间数据的多尺度一致性无级表达模型,研究了基于该模型获取整数尺度上的地理信息,以及通过增量、连续地增补细节来获取分数尺度上的过渡地理信息,从而获取任意尺度上不同详细程度的地理信息的方法,动态地实现了线状特征空间数据的无级表达,并给出了实验结果。 相似文献