论文部分内容阅读
火是地球表面频繁发生的异变现象,也是森林、灌丛、草地等生态系统中植被演替的主要动力。植被火烧释放出来的大量气溶胶颗粒物以及各种痕量气体,会引发大气环境和全球碳循环过程的深刻改变。遥感卫星能够监测和记录全球地表信息,尤其适用于地表异变现象特别强烈的火灾事件。遥感技术在野火识别和监测中的应用主要为了实现以下4个目的:1)火点精确地理位置判定;2)在燃火线的范围制图和火场发展趋势判定;3)火烧强度评价;4)火烧迹地植被恢复监测与评价。文中总结了遥感卫星技术和数据在火险评价与制图、火点识别、火烧面积统计以及火烧迹地植被恢复评价中的应用和贡献。
Fire is a frequent change on the surface of the earth and is also the main driving force for vegetation succession in ecosystems such as forests, scrubs and grasslands. The large amount of aerosol particles and various trace gases released by vegetation fires can cause profound changes in the atmosphere and in the global carbon cycle. Remote sensing satellites are capable of monitoring and recording global surface information and are particularly suitable for fire events where the phenomenon of surface alterations is particularly strong. The application of remote sensing technology in wildfire identification and monitoring is mainly to achieve the following four purposes: 1) accurate determination of fire location; 2) mapping in the firing line and determination of the development trend of the fire scene; 3) evaluation of fire intensity; 4) Vegetation restoration monitoring and evaluation. This paper summarizes the application and contribution of remote sensing satellite technology and data in the evaluation and mapping of fire insurance, the identification of fire points, the area of fire area and the assessment of vegetation restoration in the burned area.