| 利用GIS技术模拟角规测树研究 |
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| 引用本文： | 雷宇,冯仲科,吴露露,隋宏大.利用GIS技术模拟角规测树研究[J].林业调查规划,2009,34(3):1-5. |
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| 作者姓名： | 雷宇 冯仲科 吴露露 隋宏大 |
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| 作者单位： | 北京林业大学测绘与"3S"技术研究中心,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 通过GIS软件对角规测树过程进行模拟，研究不同的角规系数与通视条件对角规测树结果造成的影响．实验结果表明，角规计数需最大样圆才能确定样地中的断面积，而最大样圆受到树木的相对位置、树木的胸径、选用的角规系数的影响；角规系数的选择与角规卡口的宽度与大部分树的胸径有关．最后对GIS模拟角规绕测时树木遮挡情况进行了分析．
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| 关 键 词： | GIS 角规测树 最大样圆 角规系数 |
Experiment on Tree Measurement with Angle Gauge Imitated by GIS Technologic Method |
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| LEI Yu,FENG Zhong-ke,WU Lu-lu,SUI Hong-da.Experiment on Tree Measurement with Angle Gauge Imitated by GIS Technologic Method[J].Forest Inventory and Planning,2009,34(3):1-5. |
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| Authors: | LEI Yu FENG Zhong-ke WU Lu-lu SUI Hong-da |
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| Institution: | Institute of GIS;RS & GPS;Beijing Forestry University;Beijing 100083;China |
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| Abstract: | The process of angle gauge's tree measurement was imitated by GIS software to study the impact of different angle gauge's indexes and perspective conditions on the result of the measurement.The experimental results show that maximum circle is necessary to determine basal area of sample plots in angle gauge's counting,while maximum circle is affected by relative position,breast diameter,angle gauge's index selected.The selection of angle gauge is related with the width of the angle gauge mount and breast dia... |
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| Keywords: | GIS |
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