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Light Detection and Ranging (LIDAR) is a fast method for sampling the earthpsilas surface with a high density and high accuracy point cloud that is used to generate high density and high accuracy Digital Elevation Models (DEMs) and DSMs. In this research we obtained airborne LIDAR elevation data with spatial resolution of 1 m to reveal new details of mountain block morphology and structure to investigate...
A distributed watershed runoff and sediment production model, reflecting the influences of the spatial inhomogeneity of underlying surfaces and human activities on watershed runoff and sediment production, is constructed. It can simulate the spatial and temporal processes of runoff and sediment production under different kinds of land utilization, and provide technological support and scientific basis...
According to hydrologic similarity, that means the grids of the same topographic index were classified into the same runoff unit, TOPMODEL calculates runoff yield. However, spatial heterogeneity of basin terrain and geomorphology information such as rainfall and topographic index statistics distributed curve etc. is not considered. This paper, trough treating basin DEM, obtains sub-basins based on...
Current land use and cover (LUC) mapping is often made using high resolution images such as those from the Landsat TM/ETM+, SPOT, IKONOS, QuickBird sensors etc. However, the historical LUC information was often extracted from the earlier Landsat MSS images. Resultant land cover classification accuracy is often unsatisfactory for quantitative change analysis due to the limited number of spectral bands...
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