基于语义映射的BIM与3D GIS集成方法研究

BIM与3DGIS技术的结合可以连接室内室外,实现城市精准三维建模,更好地推进智慧城市的建设。IFC与CityGML分别作为BIM与3DGIS的通用标准,利用本文提出的基于语义映射的方法,可以实现IFC到CityGML几何与语义信息的转换,并以标准模型进行了验证。     

１∶５０万地质图数据库的研建

全国150万地质图数据库以国产软件MAPGIS作为基础平台,以各省(区)区域地质志附图和香港特别行政区120万地质图为基础资料,采用现代地质学、地层学、岩石学等的新理论和新的表示方法,按岩石地层单位、花岗岩谱系单位,侵入岩按时代加岩性编制而成.该库由数字地质图库和地理底图库构成,可按任意空间范围、不同比例尺、不同投影方式和不同地质、地理内容等单项或多项任意检索;通过检索能自动形成具有图例、图外整饰的完整的地质图.     

基于GIS可视化的中国大陆沿海城市自然灾害风险评估

依据灾害系统理论,从生态环境脆弱性、气候变化影响风险性及社会经济暴露性三方面出发,构建中国大陆沿海城市自然灾害风险评估体系。采用乘法计算模型,即风险=脆弱性×危险性×暴露性,求得自然灾害综合评价指数。分析探究中国大陆53个沿海城市自然灾害风险特征,识别高风险、高脆弱性区域。     

流域污水处理厂群模拟调度系统设计与实现—以松花江为例

介绍了流域污水处理厂群模拟调度系统研发过程,该系统建立了流域基础地理与水环境专题数据库,集成流域厂群调度方案,嵌入水动力模型。系统实现了松花江专题数据管理、流域断面水质监测、水质动态模拟、厂群调度实施等功能,为流域污水厂群管理提供了软件平台支持。在本系统中,通过污水厂群协同合作的方式调控污染物,从整个流域的角度减少污水处理资金投入,提升污染物削减能力,进一步改善流域水质,对水污染治理与厂群管理等方面具有重要的意义。     

南方典型山区土地利用变化GPS野外测量方法--以攀枝花仁和区为例

在ＧＰＳ空间信息技术综合应用于山区土地资源动态示范研究背景下,总结山地ＧＰＳ野外测量方法和经验。山地ＧＰＳ测量作业的主要问题是如何在保证测量数据质量的前提下提高工作效率、减少工作强度。ＧＰＳ测量数据已成为国土资源动态监测和管理领域的新型数据源。     

Landslide risk analysis between Giri and Tons Rivers in Himachal Himalaya (India)

The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies.     

On the global stratotype section and point of the Triassic base

A unique succession of volcanogenic deposits with representative paleontological remains characterizing the Permian-Triassic boundary interval in the North Siberian platform and Taimyr is described. The succession is suitable for selecting a standard for the Triassic base in nonmarine deposits. Abundant and diverse fossils occurring in the succession evidence that volcanism responsible for origin of the plateau basalt province in Siberia was not a brief epoch of paroxysmal eruptions, which eliminated everything alive. Throughout the formation history of relevant plateau basalts, the organic world of the plateau and around existed and gradually evolved.     

JAVA编制地理信息系统软件的研究与应用

随着