KCPIS的空间数据模型与用户界面

本文介绍了全国重点建设项目信息系统的空间数据模型，以用户为中心的可视化界面和专用查询、统计、制图功能。     

Systematic GIS-based landslide inventory as the first step for effective landslide-hazard management

The purpose of the so-called IFFI project (Inventario dei Fenomeni Franosi in Italia—Inventory of Landslides in Italy) and of many other related activities carried out by the Centro Regionale per le Ricerche Territoriali e Geologiche of ARPA Piemonte (Agenzia Regionale per la Protezione Ambientale—Regional Agency for Environmental Protection), is to map all the existing landslides in Piemonte (including both results of monitoring data and available historical data). ARPA carried out new systematic surveys using airphoto interpretation and created a specific alphanumeric geological information systems (GIS)-based database to store and process all the collected data. In order to obtain proper landslide-hazard zoning, it is necessary to provide a landslide inventory and to define the relationship between landslides and geological setting. A landslide inventory represents a fundamental base of knowledge, is a very basic tool for land planning, and strongly helps the local authorities in their decision making.     

过去千年中国东部年代际-百年尺度干湿变化特征:基于古水文动力同化数据

利用古水文动力同化数据(PHYDA)研究了过去千年中国东部年代际-百年尺度干湿变化特征.结果表明,对比其它重建数据PHYDA在百年尺度上对小冰期前期中国东部干湿变化的再现能力最好,其对这一时期发生的年代际干旱事件包括1352-90年,1445-98年,1580-94年和1626-65年干旱事件的再现能力也最强.通过与强...     

时态GIS理论及其数据模型初探

时态GIS(Geography Information System)是GIS中的一个新兴的研究领域。传统的GIS记录的只是这个不断变化的世界的某一时刻的影像,这类GIS亦称为静态GIS。如果在GIS中引入时间这个与空间同等重要的因素,或者说是在三维GIS的基础上,增加时间维或者时间变量,就形成了时态GIS。目前对于时空关系模型的研究就是当前时态GIS研究的重点之一。时态GIS数据模型的实现方法主要有两种:一是扩展传统的关系模型,二是采用面向对象的方法。当前时态GIS的研究取得了一些进展,但仍有许多不足之处。本文将结合实际,对未来完善时态GIS模型及系统建设提出一些需求方面的意见和想法。     

电子影像地图的技术研究

本文概述了电子影像地图的概念及其与地理信息系统的关系,详细介绍了电子影像地图的技术和实现方法.在上述理论基础上,本文研制了上海市电子影像地图,在研制过程中解决了数据安全性的问题、大数据量的存储、传送问题等等.论文依据面向对象的设计原理和编程方法,用Visual C 开发了用户的浏览查询界面,为普通用户提供了一个快速的查询浏览平台.     

数据同化——它的缘起,含义和主要方法

我国已进入流体动力学的卫星观测世纪,数据同化（有时叫“四维同化”）,势必成为随之而来的重要课题之一。针对目前人们对这一课题尚无太多了解,从而在实际工作中产生一些混乱,笔者在本文就数据同化的必要性,它的含义,它的开创和现在研究、应用中的主要方法作一比较详细的论述。     

Development in Precision Seafloor Survey and Mapping in China

This article presents a general introduction to the development in China since 1980s in precision seafloor survey and mapping. Emphasis is given to the processing and integration of data from the acquisition system centered on the multibeam bathymetric survey equipment, and to the interactive map generation systems, MBChart, SeaMap, and SeaGIIS. Application of these systems will also be described.     

Assessing the quality of data required to identify effective marine protected areas

This study aims to evaluate the effectiveness of currently available substrate data to designate marine reserves to meet conservation objectives. The case study site is Lyme Bay (approx. 2460 km²), in the western English Channel. An area of 240 km² in Lyme Bay was designated ‘closed to bottom dredging’ in July 2008 with the aim of protecting reefs which are an important habitat for Eunicella verrucosa (pink sea fan). The effects of using different substrate data resolution on the selection of sites to protect a range of biotopes using the Marxan package are determined. The effect of including a closed area on the efficiency of a marine reserve network is also investigated. Findings suggest that substrate data did not capture the biodiversity of the area and that using no data at all was equally effective. If low resolution data are all that are available then other options, such as expert opinion, or other data, such as activity use information could be used instead. Including a predefined closed area into the analysis led to an increase in area required to meet conservation goals using high resolution biotope data. It also increased the area of the reserve using the three substrate layers with no increase in protection for biotopes. This suggests that when designing networks of marine protected area sites, including current protected areas may be inefficient, resulting in larger areas being protected with no increased conservation of marine biodiversity. Policy makers must be prepared to adapt management in light of these findings and be aware of the shortcomings of the data available for use in marine conservation planning.     

新疆数字化地电台站的场地勘选、建设、运行及其资料评价

详细介绍了新疆数字前兆观测网络建设期间新增5个数字化地电场观测场地的勘选、建设、运行,对运行过程中出现的问题做出了分析和总结,也对今后前兆观测的发展提出了建议.