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Land use/land cover change (LUCC) as an important part of global environmental change has always been one of the hottest issues of ecology research. Based on RS and GIS methods, land use information for 1990 and 2008 was acquired from TM images and analyzed in Yanqing County, Beijing, China. This paper analyzes spatial-temporal land use change in two basins covering the study period. The results showed...
Water environmental problems of river basins in china are becoming more and more serious. Whereas, the environmental watchdogs at different levels provide comparatively independent water environmental data and use various kinds of data patterns, which makes it difficult to resolve the problems in a comprehensive way and make a unanimous decision as to how to deal with the worsening water environment...
Yuncheng, located in Shanxi graben basin, has been suffering large scale ground fissures hazard, which seriously constrained the urban construction and economic development. In order to monitor and mitigate this hazard, this paper thoroughly analyzes each hazard-formative factor of ground fissures, such as faults, earthquake, land subsidence, geomorphology, stratum and rainfall. Then we establish...
Wayfinding is a kind of question we have to face when we going out every day. A great deal of research on path analysis algorithms have been performed and applied in wayfinding, however most algorithms on minimal path, optimal path are carried out from the mathematical point of view, neglecting the consideration of geographical knowledge. This paper tries to find the factors affecting people's satisfaction...
Most traditional epidemiological studies are based on the statistical analysis rather than spatial information. Therefore, the study combining spatial analysis with epidemiology is a promising and perspective field. This paper, based on the technology of GIS, the method of disease mapping and traditional statistics, is focus on the spatial data of influenza A virus subtype H1N1. A spatial database...
Our country is vast in territory and the geological environment is complicated. The nature geology conditions that influence the development of geological hazards are complicated and diversified. China is one of the most serious earthquake disasters in the world. This paper mainly investigate the application that the geographic information system in assistance decision and emergency command, talk...
Spatial information processing is one of the important research contents in information technology. It is the major direction to combine geo-information technique and mobile communication technique in the spatial information processing. In this paper, we have thoroughly analyzed supporting techniques of mobile smart terminal spatial information processing system based on the spatial information's...
ArcGIS Geoprocessing is an important part of ArcGIS, which is a large-scale geographic information system software launched by ESRI corporation. The ArcGIS Geoprocessing provides an application-oriented and Process-oriented spatial analysis modeling method, so it's a very useful assistant decision-making and programming tools. Project Site location is a typical multifactor comprehensive evaluation...
In this paper, we do research on the patterns of path representation in Chinese language from the perspective of spatial cognition. At first, we acquire Chinese sentences of path representation in the form of questionnaire. In the data processing stage, we extract the trunk of each sentence have acquired and statistic the rules of words used in these sentences. Then we establish the knowledgebase...
This paper has conducted the national-scale assessment of flood disaster risk in China based on the theory of natural disaster risks and by means of the powerful spatial analytic tool of GIS, as well as the normalization and analytic hierarchy process. The precipitation of the current day and last three days, topographic elevation, topographic standard deviation, network of rivers and lakes, population...
Natural and anthropogenic (e.g. land cover/land use change) processes can lead to ecosystems change dramatically on timescales from years to decades. Especially, land cover/land use changes by mining can have drastic impacts on ecosystems and basin-wide water budgets. Phosphate rock is an important strategic resource. China and U.S. are two major phosphate reserves counties in the world and both facing...
Spatial relationships, which refer to the relationship among some geographical entities, are very important in geographic information systems. Involving the relations of topology, distance and direction, route choice problem is also the contents of spatial relationships. This paper aims to explore the ring roads impact on travelers when choosing routes in Beijing, and to provide a reference model...
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