Island 3d Landscape Reconstruction And Its Application In Ecological Restoration Planning

In recent years, rapid development of marine economy and increasingly scarce land resources result in the extent of island exploitation increasing. The ecological environment of several islands was damaged badly, loss of soil and water even brings the whole island disappearance. In order to repair islands which have been damaged, our country has done a lot of related work. But the study which appliance of the GIS technique combined with three-dimensional modeling to island ecological restoration planning is rare.This article will introduce GIS three-dimensional modeling technology to island repair planning. Build an island model based on GIS technology multi-source data integrating. Reconstruct the three-dimensional landscape of island destructed. Then in order to being auxiliary to the planning department mark decision and improve efficiency.The article mainly research techniques:Using both the 3DS Max and ArcGIS to erect island three-dimensional model. Make use of the photos of island exterior to design texture mapping. Then the model is imported into a three-dimensional visualization system based on OpenGL. Adopt database technology to manage data model and texture.The work of this article in the following aspects:(1) Building an elaborate three-dimensional model of island terrestrial with the measure data CORS-based and DLG on the scale of 1:10000. Comparing the seven spatial interpolation methods which can generate seabed continuous surface, selecting the optimal one to generation seabed DEM. And study a method which integrates the submarine water depth and island land-surface elevation with the same reference datum. So as to build integration DEM.(2) Using the computer three-dimensional modeling technology on the island land-surface texture mapping, and combined with OpenGL visualization technology, constructing three-dimensional view virtual environment of the island.This article resolve build an elaborate three-dimensional model facing problems that the data source to lack and benchmark unity difficultly. Reconstruct island three-dimensional landscape, and providing an intact resolvent for building island three-dimensional virtual landscape. Meanwhile island three-dimensional landscape applied in island ecological restoration planning work of Qiaoliangshan. Application indicates that the three-dimension landscape play a good auxiliary function in island ecological restoration planning and implementation.