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| 土地定级中因素权重的理想方法——拟合算法 | |
| 引用本文： | 王晓红,杨小雄,杜晓.土地定级中因素权重的理想方法——拟合算法[J].贵州大学学报(农业与生物科学版),2006,25(4):349-353. |
| 作者姓名： | 王晓红 杨小雄 杜晓 |
| 作者单位： | 1. 贵州大学,林学院,贵州,贵阳,550025 2. 广西师范学院,资源与环境科学学院,广西,南宁,530001 3. 中国科学院,遥感应用研究所,北京,100101 |
| 摘 要： | 总结分析了传统的多因素土地定级中因素权重的确定方法——专家打分法的局限性，提出一种更加理想的基于GIS环境土地定级时因素权重的确定方法——权重拟合法。比较分析法、拟合算法的理论和计算方法。结果表明，采用拟合算法计算出某定级区域的因素权重值，其权重值通过了一致性检验。将该权重值用于土地定级所得的定级结果与土地质量实际情况能很好地吻合，证明该法的可行性。拟合算法评估过程客观，对专家经验的依赖性减少，对于土地市场比较活跃、土地交易案例多的地区实用有效。 |
| 关 键 词： | 拟合算法 因素权重 土地定级 地理信息系统(GIS) |
| 文章编号： | 1008-0457（2006）04-0349-05 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-04-10 |
Research on the fitting algorithms method of factors power in land grading |
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| WANG Xiao-hong,YANG Xiao-xiong,DU Xiao.Research on the fitting algorithms method of factors power in land grading[J].Journal of Mountain Agriculture & Biology,2006,25(4):349-353. | |
| Authors: | WANG Xiao-hong YANG Xiao-xiong DU Xiao |
| Institution: | 1. Forestry College, Guizhou University, Guizhou Guiyang 550025, China;2. Guangxi Teachers Education University, Guangxi Nanning 530001, China;3. Institute of Remote Sensing Application, Chinese Academy of Sciences,Beijing 100101, China |
| Abstract: | The purpose of this paper is to seek a more perfect method about establishing factor powers of land grading. After analyzing the deficiency and defect by means of consultation of expert in traditional methods of land grading, the method of factors power fitting algorithms of land grading in GIS is presented. Methods of compared analysis and fitting algorithms method were employed. The results .show that the factors power that is calculated according to fitting algorithms can be validated by SPSS. The grading results according to these factors power are accordant to the actual land quality. The experimental result shows that flexibility of the fitting algorithms is feasible. In conclusion ,the method is simple, effective and applicable. It is suitable for the developed areas where there are rich samples of land trading. |
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