| 基于粗糙集理论的立地类型分类规则探讨 |
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| 引用本文： | 肖化顺,曾思齐.基于粗糙集理论的立地类型分类规则探讨[J].中南林学院学报,2005,25(6):99-102. |
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| 作者姓名： | 肖化顺 曾思齐 |
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| 作者单位： | 南林学院理学院,湖南株洲412006 |
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| 基金项目： | 国家林业局“十五”科技推广项目：“长江中上游低质低效次生林改造技术”（编号2001天保5保）;中南林学院青年基金项目（05047B）. |
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| 摘 要： | 利用粗糙集理论（（Roughset））中的知识表达系统和约简算法。在研究区内选取与立地因子关系最密切的树高因子为决策属性，以海拔、母岩、坡度、坡位、土类和土层厚度作为条件属性；决策属性动态聚类和各条件属性值域离散化后，建立立地类型分类决策表，计算决策属性的依赖度及其相对约简，得到马尾松林分立地类型的分类因子为土层厚度、坡位和母岩，并且其重要性分别为0．6923、0．5385和0．3077．
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| 关 键 词： | 森林经理 粗糙集 分类规则 知识表达系统 立地类型 |
| 文章编号： | 1000-2502（2005）06-0099-04 |
| 收稿时间： | 01 8 2005 12:00AM |
| 修稿时间： | 2005-01-082005-09-10 |
Classification Rule of Site Type Based on Rough Set Theory |
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| XIAO Hua-shun, ZENG Si-qi.Classification Rule of Site Type Based on Rough Set Theory[J].Journal of Central South Forestry University,2005,25(6):99-102. |
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| Authors: | XIAO Hua-shun ZENG Si-qi |
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| Institution: | Sehool of Seienees of Central South Forestry University, Zhuzhou 412006, Hunan, China |
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| Abstract: | Making use of knowledge presentation system and reduction algorithm in the theory of rough set, choosing in the study area tree height factors closely related to site factors as decision attributes, and taking altitude above sea level, parent rock, slope, slope site, soil type, soil level thickness as term attributes, the paper set up a site type classification decision table after the dynamic classification of decision attributes and the value dispersing of all sorts of decision attributes, and calculated the depending tolerance and relative reduction of decision attributes, thus defining classification factors of Masson Pine stand site type as soil level deepness, slope site and original rock, and its significance value is 0. 692 3, 0. 538 5 and 0. 307 7 respectively. |
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| Keywords: | forestry management rough set classification rule knowledge presentation system site type |
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