| 基于GIS的土地适宜性评价模型的改进 |
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| 引用本文： | 黄波. 基于GIS的土地适宜性评价模型的改进[J]. 遥感技术与应用, 1997, 12(1): 14-18. DOI: 10.11873/j.issn.1004-0323.1997.1.14 |
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| 作者姓名： | 黄波 |
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| 作者单位： | (中国科学院遥感应用研究所 北京 100101) |
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| 摘 要： | 首先介绍了基于GIS的常规土地适宜性评价模型(LSEM),并指出它有两个主要缺点:一是同一级别内的不同类别没有显示出评分的区别;二是不同级别的分界处评分差别过份拉大。然后,利用专家系统中确信度(Certainty Factor)概念对其进行了改进。研究表明,经过改进的LSEM具有包含信息更丰富、更精确的特点,能为决策者提供更多的选择余地。
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| 关 键 词： | 地理信息系统 土地适宜性评价 确信度 隶属度 |
| 收稿时间： | 1996-06-05 |
| 修稿时间： | 1996-12-10 |
The Improvement on the GIS based Land Suitability Evaluation Model(LSEM) |
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| HUANG Bo. The Improvement on the GIS based Land Suitability Evaluation Model(LSEM)[J]. Remote Sensing Technology and Application, 1997, 12(1): 14-18. DOI: 10.11873/j.issn.1004-0323.1997.1.14 |
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| Authors: | HUANG Bo |
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| Affiliation: | (Institute of Remote Sensing Applications,the Chinese Academy of Sciences,Beijing 100101) |
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| Abstract: | Land suitability evaluation is an important field where GIS are applied.This paper firstly introduces the conventional LSEM,which has the following disadvantages: one is that no difference is identified in the different thematic classes with the same score,the other is that the difference between different thematic classes is exaggerated around the division of scores.Then,it presents the second model which makes improvement on the conventional one by borrowing the idea of certainty factor from expert system.It is shown that the model after improvement encompasses more enriched and precise information than the conventional one,thereby providing more options for decision maker. |
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| Keywords: | Geographic information system(GIS) Land suitability evaluation Certainty factor Membership |
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