以塔河林业局为研究区域,以ArcGIS Engine控件和可视化开发环境Visual Studio 2008(C#)作为系统开发平台,利用现有数据(包括林火数据、气象数据、地形数据等)进行数字化并建立access数据库,用简单椭圆模型和迷宫算法实现对已发生的森林火灾面积的科学模拟和火情趋势的标绘,并构建塔河林业局森林扑火辅助决策指挥系统,从而协助扑火指挥员在最短的时间内制定最佳的林火扑救方案,降低林火损失,辅助防火部门进行科学扑火决策。 相似文献
The present study aims to explore the potential and effectiveness of new Earth Observation data for mapping the vegetation composition and structure and thus provide accurate forest maps to be used in fire propagation simulation models and fire risk assessment. Land cover classification of ASTER and Hyperion images is performed in a detailed nomenclature including different vegetation types and densities since the same vegetation type may give fires with different behaviour as a result of differences in fuel continuity.
The results suggest that both datasets can provide highly accurate maps with an overall accuracy of 85% for ASTER and 93% for Hyperion classification. Although Hyperion is superior to ASTER in terms of overall accuracy, the latter provided a higher thematic accuracy identifying one additional class compared to Hyperion. The evaluation of the classification results in terms of cost and technical characteristics suggest that both datasets are suitable for use in wildfire management tools, depending on the specific user needs, and they could also be used complementary if a combination of high thematic accuracy and locally high spatial accuracy is needed. 相似文献