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By interpretation of TM images respectively in 1990, 2000 and 2005, the map of current land use of the 5 km buffer zone around Taihu Lake in Jiangsu Province was compiled. Through overlaying, spatial analysis and statistic analysis supported by ArcGIS 9.2 software, the map of land use change rule and land cover in this area were showed, and the environmental impacts caused by the change of land use...
Land use and land cover change (LUCC) plays an important role in the evolution of the global environment and sustainable development. Land use is related to natural geography and human actions, and the factors during some period are mainly studied in LUCC. Most researches are concerned about rural area but few about urban fringe area. In this paper, land use change in the outskirtsis studied, taking...
China is now practicing the rural construction to narrow the gap between the urban and rural areas. Consequently, tens of millions of dollars are pumped into rural areas. To guarantee the social equity and achieve the economic efficiency, however, where or which villages should accept the investment? This paper aims to forming a technical flow details on how to pick out the exact built locations of...
Along with the development of human society and high demand on environmental quality, the assessment of landscape impact has played an important role on the regional planning construction or exploitation project. However, there are still many problems in landscape impact assessment process, because it is difficult to determine the standards and rating scale, besides the evaluation method on landscape...
This paper puts forward an algorithm that implements recovery of SVG format GIS images at specific timestamp. As GIS images are stored by XML format according to different timestamp sequence version increment. Our research mainly focuses on the recovery of SVG format GIS image at specific timestamp by incremental storage strategy and the strategy has been defined in our previous research. The algorithm...
By analyzing the characteristic of business rules in GIS, this paper designs and implements a business rules component based on XML using the relationship between spatial data and business rules and methods of RDBMS. This component implements the form, storage and reuse of business rules.
This article summarizes that the function of the predicting scope of the polygonal area of collapse in the mine goaf in WebGIS by VML with the algorithm of a parallel line on a broken line, for the current complexity of the algorithm and the limitation of the scope of application are not high, and accomplish the feature to show collapse range of mine goaf in WebGIS by VML. This kind of predicting...
The land use planning mapping is the important content of the country land use planning. The series map strengthen the expressive force and operability of planning achievements. Based on mapping the country land use planning of Yanshi city, the paper discussed the relationship among the planning maps and worked out the fast mapping method and procedure by Mapgis software.
Appraisal and analysing of eco-sensitivity is an effective and crucial way to determine areas where should establish and protect with emphasis. GIS(Geographic Information System), factor superposition method and analytic hierarchy process are adopted in this thesis. The authors choose five ecological factors which are elevation, slope, aspect, vegetation and hydrology to evaluate Eco-sensitivity of...
Slope instability is the most serious geological disaster. As a tool of landslide prediction, the deformation monitoring is involved wide range of products, enormous stockpile of information. Scientifically and effectively managing dynamic monitoring data through establishing information management system can reduce the redundancy of the monitoring data and ensure the smooth of the information and...
Geostatistical interpolation includes a variety of interpolation methods, but not all of the principle and applicability of interpolation methods are the same. So, this research based on Geostatistical Analyst in ArcGIS9.3 and elevation data, uses three interpolation methods: Ordinary Kriging, Logistic Normal Kriging and Universal Kriging to construst elevation surface. Then, measuring the accuracy...
With the rapid development of urbanization and informatization, public transport has become one of the most important traffic modes for urban residents. How to acquire public transport information quickly and accurately is necessary in daily life. Intelligent public transport system based on Visual Basic and Super Map is developed in this paper. Not only can optimal route or transfer scheme be acquired...
In recent years, research on Construction Information System for building the U-City has been actively carried out, and it is required to secure technologies to acquire, enable and apply spatial information in a construction site in order to enhance the effective deployment of construction information. In this study was performed construction-related spatial information technologies to extract, service...
Three-dimension(3D) modeling is introduce to Geographic Information System(GIS). A strategy of the construction of 3D model, 3D visualization and 3D spatial analysis are proposed in Supernatural GIS environment. Based on air photos and large scale topographical map, with Digital Photogrammetric System(DPS) and 3DMAX techniques, a 3D virtual scene of Henan Polytechnic University campus is designed...
During the period of increasingly economic competition, how to reduce the cost of logistics has become the focus of attention.The TPL(Third-Part-Logistics) Geospatial Information Services platform Based on SOA. Taking advantage of the SOA style, it presents different logistics enterprises the integration of information resources from distributed heterogeneous multiple source systems. By sharing and...
In this paper, the GIS application in the emergency command and status of JDL information fusion model and the characteristics of the five stages are introduced. With combination of GIS and the JDL, studied the characteristics of the campus emergency command, combined with the actual situation and needs, analyzed and re-definition of the five stages of information fusion, information fusion model...
Accessibility is taken for the comprehensive and effective method for traffic network evaluation, and gradually is used in diversified domain, such as urban planning, traffic planning, spatial structure and regional economy development. GIS as a kind of new technology, it provides a more simple, accurate and effective tool for the computing of accessibility. Usually, the study of accessibility only...
Base on the view of environment education in geography, this paper analyses the uniqueness of using the RS (Remote Sensing)/GIS (Geography Information System) technology as an assistant tool in the practical teaching. From the teaching practices, it has been showed that this method can broaden the horizon of geography environment education way of thinking and explore new ways to enhance the education...
Due to most Mobile GIS adopts request-response pattern to communicate between server and mobile terminals, and that mobile terminals are isolated from one another, so it leads to be lack of collaboration and data sharing capabilities among mobile terminals in Mobile GIS. In view of this, a network collaborative transmission model which combines central server with P2P (Peer to Peer) network is proposed...
Wuhan city is the core city of Wuhan city circle and the major city of the Yangtze River, and the change of water have attracted great attention. Using the techniques of "3S" and landscape ecology, based on 1991 and 2009 Landast TM remote sensing image, integrating with the change of water modeling, transform matrix, the shift of gravity centers and landscape pattern analysis software Fragstats3...
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