文献类型：期刊文献

中文题名：便携式森林资源调查仪研制与试验

英文题名：Development and Experiment of Portable Instrument for Forest Resources Inventory

作者：程文生[1];冯仲科[1];黄晓东[2]

第一作者：程文生

机构：[1]北京林业大学精准林业北京市重点实验室;[2]北京联合大学应用文理学院

第一机构：北京林业大学精准林业北京市重点实验室,北京100083

年份：2018

卷号：33

期号：5

起止页码：156-162

中文期刊名：西北林学院学报

外文期刊名：Journal of Northwest Forestry University

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

基金：国家自然科学基金(41371001;U1710123);青年教师科学研究中长期项目(2015ZCQ-LX-01)

语种：中文

中文关键词：森林资源调查;仪器;胸径;树高;林分参数

外文关键词：forest resources inventory;instrument;DBH;tree height;forest parameters

摘要：以数字图像处理技术、摄影测量技术、测树学为理论基础,研制可用于森林资源调查的多功能调查仪。该仪器主要由Cortex-M3中央处理芯片、激光测距模块、倾角传感器、蓝牙模块、LED彩屏、CCD镜头等电子元件组成,测量时获取距离、倾角、图像等信息,并使用C语言在Keil uVision4开发平台下构建一套集单木测胸径、单木测树高、单木测材积、圆形样地观测4个主要功能模块于一体的软件系统嵌入到测树仪中。结果表明,单木测量功能的平均精度高达96.98%,方差为0.023 3,其中单木因子测量中的胸径测量精度高达97.85%,树高测量精度高达97.46%,材积测量精度高达95.64%;圆形样地观测功能林分参数获取,林分平均胸径测量精度高达97.92%,林分平均高测量精度高达97.97%,株数密度测量精度高达96.54%,蓄积量测量精度高达95.79%,符合国家森林资源二类调查中的精度要求,该仪器可在林业调查工作中进行推广和应用。
The contents of forest resource survey include the investigations on the forest,woods,animals and plants that growth in the forest area as well as its environmental conditions for the object of forestry survey.Due to the complex conditions of the forest site and the difficulty of the work of the staff,many problems exist in forestry investigation.In order to solve the problems,a portable instrument for forest resources inventory was developed that based on the theory of digital image processing,photogrammetry and tree measurement.The instrument was mainly composed of a Cortex-M3 central processing chip,laser ranging module,tilt sensor,bluetooth module,LED color screen,CCD lens and other electronic components.It could get the distance,angle,photo and other information when it measured the trees.Using C language in Keil uVision4 development platform to construct a set of embedded software system,tree DBH,tree height,single tree volume,circular sample plots could be measured.Through the test,the measurement accuracy of single tree DBH function factor was as high as 97.85%,tree height measurement accuracy was as high as 97.46%,volume measurement accuracy was up to 95.64%;stand average diameter at breast height measuring accuracy was as high as 97.92%,stand average height measurement accuracy was up to 97.97%,the number density measurement accuracy was up to 96.54%,volume measurement accuracy was up to 95.79%.The instrument could not only measure the single wood factor and the stand parameter accurately,but also reduce the consumption of human and material resources.The instrument could be widely used in the investigation of forest resources.