江西省交通区位演变与区域发展效应

选择江西省作为典型研究区域,采用历史分析与空间分析方法,基于长时间序列研究不同交通运输阶段交通区位的动态演变过程,并对其所引致的区域发展特征进行分析.结论是:在传统交通运输阶段向近代化及现代化交通运输阶段转变过程中,江西省宏观交通区位分别表现为国家南北交通控扼中枢,铁路建设的滞后区与周边发达地区间的交通过境区,可达性演变特征则由南北方向可达性的优势区逐步演化为滞后区.不同时期相对应的区域发展特征表现为,从传统运输阶段的区域商贸全面繁荣,走向近代工业化进程滞后及当前经济发展边缘化.在总结典型案例基础上,尝试从成因层,演变层,作用层,效应层和反馈层五个层面探讨交通区位与区域发展的内在作用关系.     

RZCORS在莒县数字地形图测绘中的应用

结合项目实际工作,介绍基于日照市连续运行参考站系统（RZCORS）的网络RTK在莒县大比例尺测图中的应用方式和工作效率,并与传统GPS实时差分系统RTK技术进行比较,进而说明RZCORS系统的优势及发展前景。     

基于Flash技术的网络地图发布研究与应用

分析了网络地图的特点与功能,回顾了网络地图的发展历程,并对现今较为成熟的国内、外网络地图发布技术及其实现方式做了比较研究。在此基础上,结合“深圳市资源节约与综合利用网”企业信息发布的实际需要,采用“Flash”技术,实现了真正意义上的“瘦客户端”的网络地图发布系统。     

数字正射影像拼接的研究

介绍了数字正射影像,详细探讨了数字正射影像的拼接,并介绍了一种处理影像重叠区域过渡的方法,以消除拼接后影像的接缝。     

Groupers on the Edge: Shelf Edge Spawning Habitat in and Around Marine Reserves of the Northeastern Gulf of Mexico

The northeastern Gulf of Mexico contains some of the most diverse and productive marine habitat in the United States. Much of this habitat, located on the shelf edge in depths of 50 to 120 m, supports spawning for many economically important species, including groupers. Here, we couple acoustic surveys with georeferenced videography to describe the primary spatial and geologic features of spawning aggregation sites for four economically important species: gag (Mycteroperca microlepis), scamp (M. phenax), red grouper (Epinephelus morio), and red snapper (Lutjanus campechanus), with notes on fish distribution and abundance and spawning activities. We provide information on movement patterns of reef fish determined using acoustic telemetry. Finally, we discuss the possible coupling of geomorphology with hydrographic features to influence the overall productivity of the region and the importance of spatial fishery management in sustaining that productivity.     

Geographic Information Technologies and the History of a Shoreline: The Case of Chapter 91 in New Bedford,Massachusetts

Abstract

This article discusses the use of geographic information technologies to assist researchers in the exploration of historical databases. The case study is a pilot project in which we used geographic information systems (GIS) and global positioning systems (GPS) to study the history of the Public Waterfront Act (the “Chapter 91” program), a policy designed to balance private property rights, public interest, and environmental protection in the Massachusetts tidelands. The issues discussed range from the role of GIS in society and its limitations as a representational tool to the ability of current GIS to deal with historical data and to manage temporal attributes.

     

A GEOGRAPHICAL ANALYSIS OF IMAGE INTERPRETATION METHODS

Image interpretation methods, procedures for relating image pattern to ground conditions, are essential to our use of remote sensing imagery. These methods can be analyzed in respect to the role of ancillary information in the image interpretation process. In general, those procedures that are comparatively independent of ancillary information can be applied in varied geographic settings. Because almost all interpretation procedures depend to some extent upon ancillary information, a detailed and integrated knowledge of the cultural and physical landscape is a prerequisite for both manual and automated interpretation procedures.