RD 1000电子测树仪立木因子测定及适用性研究

传统的森林计测仪器均存在很大的不足，不能精准快速便捷地为科学研究和各有关部门提供真实可靠的立木基础数据。针对当前森林测量仪器的不足，引进美国激光技术公司的快特能RD 1000电子测树仪，以北京市奥林匹克森林公园和鹫峰国家森林公园为研究区，以误差理论为基础理论依据，对其精度和适用性进行验证分析。以传统工具卡尺和全站仪测量的数据为相对真值，对比分析RD 1000电子测树仪的测量结果，最终得出其适用性广，而且胸径测量的精度能达到毫米级别，树高测量的精度能达到厘米级别，足以满足精准林业的要求，能为我国林业的发展提供切实可行的技术支持。

Measurement of Stumpage Factors and Its Applicability of the RD 1000

The traditional forest measuring instruments are very insufficient and cannot meet the requirements of providing the reliable stumpage data quickly,instantly and accurately for scientific research and other relevant departments.To make up the deficiency of current measuring instrument,an electronic tree measuring instrument which is manufactured by Laser Tech Company was introduced from America.To verify the accuracy and applicability of the RD 1000 tree measuring instrument,a series of researches based on the theory of error were implemented in Beijing Olympic Forest Park and Jiufeng National Forest Park.Measurement data of the traditional equipment calipers and total station had taken as the relative true value and a comparison was made between the relative true data and the RD 1000 measurement data.The results indicated that the RD 1000 could reach a millimeter level in the DBH measurement and a centimeter level in the measurement of the tree height,besides it had a wide applicability and was barely restricted by the site conditions.The RD 1000 could totally meet the requirement of precision forestry and provide a feasible technical support for the development of forestry in China.