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The earth observation technology of remote sensing can offer rich variable data of urban expansion and becomes the main approach to monitor urban expansion. To obtain the characteristics of urban expansion process of Suihua city, we extracted urban land information base in five periods remote sensing images (1976, 1990, 2001, 2006 and 2009) using GIS technology, with the help of expansion intensity...
The land use and land cover changes have been issues for better understanding human-land relations and sustainable development of regional land sources. This paper was to analyze the land use and land cover changes in new land around Bohai bay with crisp ecosystem and fast development during last 20 years with RS and GIS taking Guangrao county as a case study. In this study, two Landsat TM images...
After the occurrence of natural disasters, objective and accurate assessment of road damage is the key to emergency rescue. However, in the traditional road damage assessment, the assessment factor and the form of assessment result are single. It can only give an overview of damaged roads, but can't further provide their traffic capacities, which are essential for the disaster relief department. A...
Using the remote sensing image of Yutian county of Hebei province on Google earth in 2006, the information of urban green space was collected with the support of GIS, and the rank, distribution and space structural measurement of urban green space patches were investigated and analyzed by using the landscape ecology theory. Based on the districts of the city, the urban green space landscape was overall...
Taking Landsat5/TM images of 1988, 1997 and 2005, this paper used RS and GIS to analyze the changes of ecological environment effects of land use/cover change (LUCC) during the recent 17 years of the study area. The results indicate that: swamp land shows obvious decreasing trend and decreases 1674km2; dry land and paddy land shows strong increasing trend and increase 377km2 and 1338km2 separately...
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