| 基于PPDC模型的中国生态环境质量区划 |
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| 引用本文： | 阿兰,倪长健.基于PPDC模型的中国生态环境质量区划[J].成都信息工程学院学报,2006,21(Z1):18-21. |
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| 作者姓名： | 阿兰 倪长健 |
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| 作者单位： | 1. 成都信息工程学院环境工程系专业2002级1班,四川,成都,610225
2. 成都信息工程学院环境工程系,四川,成都,610225 |
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| 基金项目： | 国家自然科学基金
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成都信息工程学院校科研和教改项目 |
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| 摘 要： | 投影寻踪聚类(PPC)模型在多因素聚类分析中被广泛应用并取得了满意的效果,然而,模型还存在诸如密度窗宽参数取值经验确定等不足,有待改进提高.针对投影寻踪聚类模型存在的问题,首次把投影寻踪聚类的思想和动态聚类方法结合起来构造投影指标,建立了投影寻踪动态聚类(PPDC)新模型,新模型在整个运算过程中毋需人为给定参数,具有聚类结果客观、明确以及稳定性好、操作简便等特点.应用投影寻踪动态聚类模型对中国生态环境质量进行评价,获得了有切实意义的区划结果.此研究为生态环境质量评价开创了一条新途径,也进一步为生态保护、建设和监督管理提供科学依据和技术支持.
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| 关 键 词： | 生态环境质量 投影寻踪 动态聚类 区划 |
| 文章编号： | 1671-1742(2006)增-0018-04 |
Regionalization of eco-environment quality in China based on PPDC model |
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| A Lan,NI Chang-jian.Regionalization of eco-environment quality in China based on PPDC model[J].Journal of Chengdu University of Information Technology,2006,21(Z1):18-21. |
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| Authors: | A Lan NI Chang-jian |
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| Abstract: | A projection pursuit dynamic cluster (PPDC) model which combines the dynamic cluster method with the projection pursuit principle is presented. Compared with the projection pursuit cluster (PPC) model a new projection index is constructed which successfully avoids the problem of the parameter calibration in the PPC model and makes the cluster results more objective and definite. The PPDC model is also robust and easy to operate in practice. Based on the PPDC model regionalization of the eco-environment quality in China consistent with the actual situation is achieved. The study initiates a new approach for the evaluation of the eco-environment quality and provides a scientific foundation and technical support for the ecological protection, construction and management. |
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| Keywords: | eco-environment quality protection pursuit dynamic cluster classification |
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