【摘 要】
:
The ancient aeolian sand has been regarded as an indicator for the formation and evolution of a desert in the past.Kumtagh Desert is located at the northern fringe of Qinghai-Tibet Plateau.The first i
【出 处】
:
Journal of Arid Land
论文部分内容阅读
The ancient aeolian sand has been regarded as an indicator for the formation and evolution of a desert in the past.Kumtagh Desert is located at the northern fringe of Qinghai-Tibet Plateau.The first integrated scientific investigation to the desert was
其他文献
利用道路测量车采集空间数据具有安全和快速的特点。详细介绍基于道路测量车的公路基础设施空间数据库的建立方案。并讨论公路基础设施采集的工作流程,分析外业数据采集方案、内业处理系统的开发方案,最后提出基于道路测量车的公路交通设施空间数据库建立的主要步骤及关键技术问题。
对北京市城市地理编码的编码方法和系统建设进行阐述,并举例说明北京市城市地理编码在土地资源和建设用地综合决策平台中的应用,最后对地理编码在其他行业的推广应用进行分析与展望。
2011年美国地理学家协会年会于4月12-16日在美国西雅图举行。来自世界各地的近6000名地理学者出席了会议。根据中国地理学会与美国地理学家协会协议内容,中国地理学会派出了以学会副理事长、中国科学院地理科学与资源研究所所长刘毅研究员为团长的核心团组出席了年会及相关活动。同时,在中国地理学会号召下,中国大陆共有50多位地理学者出席了本届年会,分别来自中国科学院地理资源所、中国科学院南京地理湖泊所、
地形湿度指数可定量模拟流域内土壤水分的干湿状况,是静态土壤含水量的最常用指标,具有明确的物理意义。但是,由于DEM本身的结构特点,其提取的地形湿度指数具有尺度依赖性。本文主要探讨因DEM水平分辨率不同而导致的DEM栅格单元异质性,对地形湿度指数提取的影响。以厦门市地貌类型比较复杂的西源溪流域为实验区,使用1∶1万等高线生成的2.5m和20m分辨率DEM数据,分别提取地形湿度指数并计算栅格单元地形异
The OGC standard for 3D city modeling is widely used in an increasing number of applications.It defines five consecutive Levels of Detail(LoD0 to LoD4 with increasing accuracy and structural complexit
The Point-In-Polyhedron problem is to check whether a point is inside or outside of a given polyhedron.When a degenerate case is detected,the traditional ray-crossing algorithms avoid the case by sele
Car routing solutions are omnipresent and solutions for pedestrians also exist.Furthermore,public or commercial buildings are getting bigger and the complexity of their internal structure has increase
Three-dimensional (3D) land development and utilization has become the trend for urban planning in the current metropolis.This paper presents a method for building a 3D cadastral management system fro
This paper presents a reality-virtual fusional campus environment.It is an online 3D platform with some aspects of real information merged together.The whole platform is based on OpenSimulator with de
Aiming at the integrative management and comprehensive applications of large-scale 3D geospatial information covering the full 3D space of a city,this paper briefly introduces the design and implement