46 Application of Three-Dimensional Terrain Modeling Technology of Gan Jiang Yuan

The unique geographical position of Gan Jiang Yuan, which has a significant value for researching, make it become the core region and key areas of the water conservation and ecological protection in Poyang Lake Ecological Economic Zone. Using papery terrain map, DEM data of the researching region was created. Based on texture information of the 3D surface from ETM+ image, then image and DEM data were overlapped to create three-dimensional terrain modeling and visualization of Gan Jiang Yuan Provincial Nature Reserve and its Application.