投影寻踪动态聚类模型及其在天然草地分类中的应用

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	投影寻踪动态聚类模型及其在天然草地分类中的应用
	崔鹏
刊名	安全与环境学报
	2006
卷号	6 期号:5 页码:68-71
关键词	多元分析天然草地投影寻踪动态聚类线性投影投影指标
其他题名	Analysis on eco-environmental safety of W eihe River Basin in Shaanxi Province
通讯作者	倪长健
合作状况	其它
中文摘要	投影寻踪聚类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，该模型还存在如密度窗宽参数取值由经验确定等不足，有待改进提高。本文针对投影寻踪聚类模型的不足，首次把投影寻踪的思想和动态聚类方法结合起来，构造投影指标，提出了投影寻踪动态聚类新模型。新模型在程个运算过程中不需人为给定参数，聚类结果客观、明确，而且它还具有稳定性好、操作简便等特点。天然草地分类的实际应用表明，投影寻踪动态聚类模型切实可行，取得r很好的效果，在多因素聚类分析领域具有广阔的应用前景。
英文摘要	The paper aims to present the author’s analysis results of the current pollution situation of the Weihe River Basin in Shaan’xi Province so as to find better ways to guarantee the coo-environmental safety of the area As is known，Weihe River is the mother river of Shaanxi Province，whose ecological quality not only affects the local economic development direcfly，but also influence the water situation of the Yellow River． Through an analysis of the actual statistic records，the results of our analysis indicate that since 1990’，the water waste and pollution in the River Basin area has been becoming more and more serious，including the extravagant use and mindless runof of the precious water at the upper reaches，quickening water quality deterioration in the middle reaches，flood-incidence rate and ever-accelerating sand—sedimentation at the lower reaches．In addi— tion，the environmental geological problems induced by the long—last— ing lowering of the groundwater level also contributes to the deteriora— tion of drinking water sources in the urban areas along the river．As to the reasons for the above problems，the chief ones are over-ex— ploitation of water(both the surface water resource and the groundwa— ter resource)and the illegal discharge of sewage，Tongguan riverbed up—lifting and the reduction of flood sections．In order to gu arantee the ecological safety and the sustainable economic development from the point of view of quality water supply，it is urgent to take effective and feasible countermeasures， including constructions of new hy— draulic projects，pollution control stations，adjustment of industrial structure，popularization of water-saving knowledge and technology， maintenance of water resource as well as comprehensive measures for eco—environment protection．
分类号	S812
资助信息	国家自然科学基金重点项目(90202007);成都信息工程学院自然科学与技术发展基金项目(CSRF200501)
语种	中文
公开日期	2010-08-27
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/1640]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式 GB/T 7714	崔鹏. 投影寻踪动态聚类模型及其在天然草地分类中的应用[J]. 安全与环境学报,2006,6(5):68-71.
APA	崔鹏.(2006).投影寻踪动态聚类模型及其在天然草地分类中的应用.安全与环境学报,6(5),68-71.
MLA	崔鹏."投影寻踪动态聚类模型及其在天然草地分类中的应用".安全与环境学报 6.5(2006):68-71.