Lijiang Urban Environment Geological Remote Sensing Study

Lijiang city is one of the important tourism cities in northwest of Yunnan Province. Urban construction and economic development have accelerated, the geological environment of Lijiang city is affected and its pressure increasing, which result from the rapid development of tourism. And urban geological environment issue has been constraining the development of the region. Therefore, the paper using remote sensing technology combine with actual research in order to translating and researching remote sensing image of Lijiang urban environmental geology, not only can overcome the limitations of traditional methods, play the characteristics of macro, integrated, intuitive, fast, the monitoring, but also have great practical significance and good results.The paper selected the current most widely used The United States Land Resources Satellite, latest series Landsat-7 ETM+ data and the highest spatial resolution commercial satellite Quickbird data as a major source of data. According to the data characteristics and landslide disaster application features, carried on the fusion and digital enhancement processing by using the ERDAS remote sensing software application to the remote sensing image, improved the image visual effect and increased the image interpretation precision. The Lijiang urban environment geology translation of remote sensing image is the paper research key point. The content of the paper as follows:1.The remote sensing research of Lijiang regional topography. Using macroeconomic remote sensing images can directly interpret the basic form of landscape types and distribution law. Three-dimensional sense of remote sensing of Lijiang city three-dimensional images will divide area into three categories, mountain landscape, basin, and valley, which shows a plateau fault basin and deep valleys on the plateau phase staggered eroded mountain landscape.2. The remote sensing imaging features of ecological environment of Lijiang city. The paper established the Lijiang city natural environment remote sensing interpretation chart by analyzing the main ingredient of Lijiang remote sensing data and NDVI vegetation index extraction. 3. The remote sensing image translation of environment geology formation lithology of Lijiang city. Through supplement and contrast the remote sensing image characteristic with the litho logical character, consummating the Lijiang city environment rock translation symbol gradually.4. The remote sensing image translation of Lijiang city's environment geologic structure. Through analyzing the Lijiang city shade grain structure of remote sensing image and the geologic structure correlation material, translated the ring structure and the activity break of Lijiang city remote sensing image, established remote sensing image translation symbol of environment geologic structure in this region.5. The remote sensing image translation of environment hydrology geology of Lijiang city. The hydrology geology is difficult to be translated in the remote sensing image, this paper mainly made the outline of the Lijiang basin water distribution through remote sensing data enhancement processing.6. The remote sensing characteristic of mainly environment geology issue of Lijiang city. The mainly environment geology problem of Lijiang city are the decreasing water resources and the geological disaster tend to happen and multiple happeness. It is Analyzed that water resources decreasing in the mainly water source nearby the Lijiang city through the 2001 year and 2002 year remote sensing image value operation. The geological disaster translation has mainly used the Quickbird data, unified the unstable pitch, the landslide, the mud-rock flow, the activity flushes the ditch and the special kind of earth image characteristic, established this region translation symbol of geology disaster, and outlined the geological disaster distributed situation.Established Lijiang urban environment geology disaster evaluate symbol of tend to happeness, unified image characteristic to compartmentalize district in tend to happen. Based on the foundation of remote sensing image translation of Lijiang urban environment geology, evaluated the remote sensing image of urban environment geology. Through unit analysis of the Lijiang natural environment and the geological environment image, unifies the Lijiang other environment geology problem, established the Lijiang city geology environment image unit district standard, and carried on the remote sensing image unit district.