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Aeolian sand landforms in the Yarlung Zangbo River (YZR) valley are a special type of aeolian landform that has attracted the attention of many scholars. However, the spatial distribution as well as the formation mechanism of aeolian sand has rarely been reported with integrated studies. In this paper, for remote sensing interpretation, scanning electron microscopy (SEM), X-ray diffraction (XRD) and...
The land use change detection methods using remote sensing data have been studied for a long term. All of these methods can be divided into three levels: pixel-level, feature-level and knowledge-level. In this paper, the advantages and disadvantages of these methods are analyzed, and a novel approach is proposed to detect the land use changes using the object-based feature consistency analysis. The...
The Wenchuan earthquake has caused numerous landslides and avalanches as the sources for debris flows. A typical example is the Miancu Gully in Maoxian, where accumulates tremendous volume of loose solid materials that have formed 12 dammed lakes. Combining field surveys, Quickbird images (with spatial resolution of 0.61m) after the earthquake are used to identify the avalanches and landslides. Results...
Junggar basin, located in the northwest arid areas of China, has vulnerable supergene ecological environment because of natural and anthropic factors. In this paper, based on the relationship between groundwater and ecological environment and combined with natural and geographical conditions, Junggar basin is divided into five ecosystem types: mountain, natural oasis, artificial oasis, natural water...
Through analysis of remote sensing technologypsilas application in the investigation and appraisal of geological hazard, in view of the application of remote sensing interpretation about debris flow geological hazard in small basin area, this paper presents the remote sensing interpretation method (RSVH) based on virtual GIS and hydrology spatial analysis. RSVH integrates virtual GIS, digital processing...
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