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In this paper, an analysis of the spatial and temporal landscape evolution of northwest Sichuan Province, China, is carried out based on the landscape theory, RS and GIS. Fucheng District in Mianyang City, Sichuan Province, is chosen as our study area, and the driving forces of its landscape evolution are discussed based on the land use maps, the Landsat TM/ETM+ and CBERS 2B remote sensing images...
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...
Based on RS and GIS, took 1993, 2000, 2007 and 2009 TM images as the data source, classic area (CA), pieces of Percent of landscape (PLAND), plaque number (NP), patch density (PD), largest patch index (LPI), shape index (LSI), fractal dimension (PAFRAC) were used to analyze the change of landscape from the types of Tangshan coal mining subsidence landscape. Landscape characteristics and dynamics change...
Land degradation is an important environmental problem, it will become a threat to food security and the sustainable development of socio-economic systems, ultimately affecting the development of humans with global warming. Xinjiang is a key region in China, in which land degradation is very serious. Combed RS with GIS technology, based on the latest remote sensing data, analyzed the spatial distribution...
Based on RS and GIS, using landscape pattern method, this thesis researched the land use pattern in Karst area effected by topography, and also analyzed the land use pattern spatio-temporal change, taking the case of Guilin City. The research indicated that topography factors, such as elevation, slope and aspect influencing land use pattern respectively and differently. As the increasing of altitude,...
This paper analyzed the spatial distribution law of NDVI in Sichuan province based on the GIS and RS technology. Firstly, the value of NDVI in Sichuan province was calculated based on the MODIS raster data; Secondly, the DEM(digital elevation model) was generated by the contour; Thirdly, the classification data of geography was extracted based on the GIS technology, such as slope, aspect , altitude...
Taking the Northern Slope of the Tianshan Mountains (NSTM) as the study area, we investigated into the oases LUCC and information entropy change by using RS, GIS and statistical model. The results showed that, (1) Establishing mathematical models of the range, speed and trend index of LUCC, especially the model of LUCC trend and state, the state and trend of oasis LUCC can be deeply researched. Meanwhile,...
With development of RS and GIS, research in land use is a hotspot at present. Using RS images in 1986 and 1996 as data source; synthesizing to carry on land use classification of Xian Tao city. The law of land use changes is: cultivated land area has been declining; woodland is in a little growing magnitude; water and unused land grow to the high trend. Comprehensive index of Xiantao land use increases...
This paper presents the methods of dynamic monitoring and prediction model of land use change and their application in Changsha county. Firstly, with the support of remote sense and geographic information system, the land use of Changsha county was categorized into five types. Then growth degree index was introduced to analyze the dynamic evolution process of land use change. Markov model was used...
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