【摘 要】
：
The Quadrangle Economic Cooperation Zone in Great Mekong Region, where the Golden Triangle is located, is composed with the border areas of China,Laos, Thailand and Myanmar. The poorest and inaccessib
【出 处】
：
Chinese Geographical Science
论文部分内容阅读
The Quadrangle Economic Cooperation Zone in Great Mekong Region, where the Golden Triangle is located, is composed with the border areas of China,Laos, Thailand and Myanmar. The poorest and inaccessible remote Golden Triangle now faces the opportunity
其他文献
为解决空间数据库的资源共享与协同作业问题,本文结合网格计算的协同调度与资源共享思想,在分析网格五层沙漏结构与空间数据库的基础上,探讨了网格空间数据库的工作流程,给出了网格空间数据库的简单拓扑结构,构建了网格空间数据库的三层体系结构。
为了在一定程度上满足某些用户在基础地形图更新周期内对电子地图数据更新的需求,建立了北京市多源空间数据库,并以此为基础开发了北京市多源空间数据库生产服务系统。该系统以现有基础测绘成果数据为基础,结合其他空间数据,进行空间数据包括各种专题数据的生产加工,实现数据的快速更新。本文介绍了北京市多源空间数据库生产服务系统建设的目的意义、关键技术、系统功能以及使用情况,并详细论述了北京市多源空间数据库生产服务
本文分析了目前上海城市信息化发展对基础地理信息的需求,明确了基础地理数据更新的重要性,指出了当前基础地理数据更新中面临的几个关键技术问题,并从实际出发从技术理论和方法上提出了当前上海在基础地理数据更新上需要研究的主要内容和方向。
本文介绍了空间数据三维可视化基本原理及运用IMAGIS进行三维可视化设计与开发的过程。同时,以鞍钢厂区为例,在其基础地理数据库的基础上,应用VB和IMAGIS进行二次开发,实现厂区景观的三维可视化。
In China, most directions of river flowing are from west to east. During historic period, since the water traffic played an important role, it was very important to form a cross-horizontal net of wate
Urbanization can affect the physical process of river growth, modify stream structure and further influence the functions of river system. Shanghai is one of the largest cities in the world, which is
Soil and water loss is now a major environmental problem in many areas of China, especially in the area of the Dabie Mountain, Anhui Province, which results in environmental degradation and does harm
In this paper, Geostationary Meteorological Satellite (GMS) infrared black-body temperature (Tbb) data from June to August 1998 are used to automatically track the activity of Mesoscale Convective Sys
The horizontal and vertical distribution characteristics of Pb in urban soil of Shenyang City, China were investigated in this study. The range of Pb concentration in the soil was 22.02-2910.60mg/kg.
Environmental degeneration in the Tibetan Plateau attracts worldwide attention, whereas case studies on how the residents understand and respond to environmental degeneration are scarce. Using a Parti