| 森林资源调查数据的稳健估计及分析 |
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| 引用本文： | 梁长秀,冯仲科,郎南军,黄华国,周科亮. 森林资源调查数据的稳健估计及分析[J]. 北京林业大学学报, 2001, 23(6): 10-12 |
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| 作者姓名： | 梁长秀 冯仲科 郎南军 黄华国 周科亮 |
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| 作者单位： | 北京林业大学资源与环境学院 |
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| 摘 要： | 该文指出 :以往森林经理调查中 ,航片判读小班蓄积与地面实测蓄积之间的统计关系多建立在经典的最小二乘原理之基础上 .当调查数据中不含有粗差时 ,最小二乘估计可以得到较好的结果 .然而 ,由于各种因素的影响 ,观测成果中总会含有粗差 .利用稳健估计 ,可以使含有粗差的观测成果得到较为理想的估计值 .该文通过稳健估计的原理介绍和算法推证 ,以及三个实例分析 ,证明了稳健估计原理可使森林调查得到更好的结果
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| 关 键 词： | 最小二乘估计 森林调查 稳健估计 |
Robust estimation and analysis of investigation data in forest resource. |
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| Liang Changxiu, Feng Zhongke, Lang Nanjun, Huang Huaguo, Zhou Keliang.College of Resource and Environment,Beijing For.Univ.,,P.R.China.. Robust estimation and analysis of investigation data in forest resource.[J]. Journal of Beijing Forestry University, 2001, 23(6): 10-12 |
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| Authors: | Liang Changxiu Feng Zhongke Lang Nanjun Huang Huaguo Zhou Keliang.College of Resource Environment Beijing For.Univ. P.R.China. |
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| Affiliation: | Liang Changxiu, Feng Zhongke, Lang Nanjun, Huang Huaguo, Zhou Keliang.College of Resource and Environment,Beijing For.Univ.,100083,P.R.China. |
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| Abstract: | In the survey of forest management previously, the statistic relationship between the photo interpretation volume of the plot and the practical measurement is based on the classical principle of MLS. If there is no gross error in the data of survey, MLS estimation can show people good results. Therefore, because of the effect of a variety of factors, there are always some errors left in the results. With the help of Robust estimation, more accurate result can be obtained from the data including rude errors. |
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| Keywords: | MLS forest survey Robust estimation |
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