彩红外航空像片应用于森林灾害调查的方法与结果分析

The Inventory Method and Result Analysis of Forest Hazard Inventory by Using Color Infrared Aerial Photos

本文应用联邦德国的一个实例,介绍了大比例尺(1:5000)彩红外航空像片应用于森林灾害调查的程序和方法。总结了彩红外航空像片判读树种和林木受损害等级的标志;并分析了不同树种、年龄和海拔高度等因素对林木受损害程度的影响;最后提出了调查精度。结果表明:利用彩红外航空像片调查林木因大气污染、病虫害、自然灾害等因子影响而受损的程度的方法,可以为合理经营规划森林资源快速提供较精确的信息。

This article introduce procedures and methods of using large scale (1:5,000) color infrared transparency to inventory the damaged forests by an example in West Germany; summarize the interpretation keys of identifying tree species and injury status of forest trees on color infrared aerial photos; analyze the stress degree to forest health conditions by factors such as species, ages and elevation. Finally, precision of the inventory are listed. Results have already demonstrated that methods of applying color infrared photos to assess the injury degree to forest trees caused by air pollution, disease and insects, natural disaster can rapidly provide information with higher precision which is needed during the planning process of making sound forest management plans.